{"title":"Dell PowerEdge R660xs Servers","description":"\u003cp data-start=\"556\" data-end=\"879\"\u003eThe Dell PowerEdge R660xs is a cost-optimized 1U rack server designed to deliver next-generation performance with a streamlined, efficient design. Powered by 4th Generation Intel Xeon Scalable processors, the R660xs provides strong compute capabilities for modern workloads while keeping infrastructure costs under control.\u003c\/p\u003e\n\u003cp data-start=\"881\" data-end=\"1191\"\u003eBuilt for core business applications, the PowerEdge R660xs supports DDR5 memory and PCIe Gen5 technology, enabling faster data throughput and improved system responsiveness compared to previous generations. This makes it an excellent choice for virtualization, database workloads, and software-defined storage.\u003c\/p\u003e\n\u003cp data-start=\"1193\" data-end=\"1517\"\u003eThe Dell PowerEdge R660xs is engineered with a simplified feature set compared to the standard R660, focusing on the most essential performance capabilities. This allows businesses to deploy modern infrastructure without paying for unnecessary expansion features, making it ideal for SMBs and cost-conscious IT environments.\u003c\/p\u003e\n\u003cp data-start=\"1519\" data-end=\"1813\"\u003eWith flexible storage configurations—including support for NVMe drives—the R660xs can be tailored for both performance and capacity needs. Integrated iDRAC9 management enables remote monitoring, deployment, and maintenance, helping IT teams efficiently manage systems across multiple locations.\u003c\/p\u003e\n\u003cp data-start=\"1815\" data-end=\"2060\"\u003eAt Wholesale Servers, all Dell PowerEdge R660xs servers are fully tested, professionally refurbished, and built to order. Customize your configuration with the right CPUs, memory, and storage to match your exact workload and budget requirements.\u003c\/p\u003e\n\u003cp data-start=\"2062\" data-end=\"2271\"\u003eIf you’re looking for a modern, cost-efficient server that delivers next-gen performance without unnecessary complexity, the Dell R660xs is a smart solution for growing businesses and scalable IT environments.\u003c\/p\u003e","products":[{"product_id":"dell-poweredge-r660xs-8-bay-build-your-own","title":"Dell PowerEdge R660xs 8-Bay 2.5\" Drives [16th Gen: New]","description":"\u003cp\u003eThe Dell PowerEdge R660xs is the 16th-generation 1U dual-socket cost-optimized rack server, and the 8-Bay 2.5\" is its compute-primary configuration: the most common volume buy in the family. The xs suffix is Dell's express tier on this generation, with the same socket and processor lineup as the full R660 but a leaner motherboard (16 DIMM slots instead of 32), no GPU support, no Direct Liquid Cooling, and a power-supply range that extends down to 600W for low-draw deployments. These are sold as New or Surplus New. Surplus New means genuinely unused, new-old-stock units from excess inventory: never deployed, priced below Dell-direct new, and covered by the Wholesale Servers warranty path below.\u003c\/p\u003e\u003cp\u003eThe R660xs is the right pick when you need a current-generation 1U dual-socket platform with full Dell warranty and the 16th gen security baseline, but you do not need the R660's 8 TB max memory, 32-DIMM-slot architecture, GPU options, or DLC support. For most general-purpose virtualization, scale-out databases, Kubernetes worker nodes, and HCI nodes that do not push memory or PCIe to the limit, the R660xs is the better value on 16th gen. For maximum SFF storage density on the same platform, the \u003ca href=\"\/products\/dell-poweredge-r660xs-10-bay-build-your-own\"\u003eR660xs 10-Bay\u003c\/a\u003e is the primary storage-density page; for 3.5\" capacity drives, see the \u003ca href=\"\/products\/dell-poweredge-r660xs-4-bay-lff-build-your-own\"\u003eR660xs 4-Bay LFF\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003eTo configure a build, call 1-800-778-1545 and we respond within 24 hours with a formal quote. Every server ships after a 12+ hour burn-in and a multi-point inspection and is backed by our 180-day warranty, with one, two, and three-year Premium options available. Volume pricing applies at 5 units and above, where most R660xs cluster and fleet orders land.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eProcessors: 4th or 5th Gen Xeon Scalable\u003c\/h2\u003e\u003cp\u003eThe R660xs is dual-socket and supports both 4th Gen Sapphire Rapids and 5th Gen Emerald Rapids in the same socket, just like the R660. This is the modern V1\/V2 pattern. The difference versus the R660 is the TDP ceiling: the R660xs is air-cooled only (no DLC) and tops out at around 225W CPUs in most configurations.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e4th Gen Xeon Scalable (Sapphire Rapids):\u003c\/strong\u003e up to 32 cores per socket on R660xs (the full R660 goes to 56). DDR5 up to 4800 MT\/s. Volume tier, widely available in the channel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5th Gen Xeon Scalable (Emerald Rapids):\u003c\/strong\u003e up to 28 cores per socket on R660xs (the full R660 goes to 64). DDR5 up to 5200 MT\/s. Same socket as 4th gen, drop-in. The 5th gen part count is lower than the 4th gen on this platform because Dell limits the R660xs to the lower-TDP SKUs in each generation.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eOur default recommendation:\u003c\/strong\u003e for most scale-out workloads, dual Silver 4410Y (12-core, 2.0 GHz, 150W) is the value floor; dual Silver 4416+ (20-core, 2.0 GHz, 165W) is the volume sweet spot. For compute-heavy 4th-gen builds, dual Gold 6438Y+ (32-core, 2.0 GHz, 205W) or Gold 6448Y (32-core, 2.1 GHz, 225W) are the upper end. Above 225W TDP, the R660 (with Smart Flow or DLC) is the right platform, not the xs.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFair warning on the TDP ceiling:\u003c\/strong\u003e the R660xs cannot run the high-end Platinum SKUs from either generation. If you are sizing for Platinum 8480+ (4th gen, 56-core, 350W) or Platinum 8568Y+ (5th gen, 48-core, 350W), you have outgrown the xs platform. Do not try to fit those into an R660xs and expect thermal headroom; specify the R660.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eMemory: 16 DDR5 Slots\u003c\/h2\u003e\u003cp\u003eSixteen DDR5 RDIMM slots, eight per CPU, across eight memory channels per socket. Max capacity 1.5 TB with 128 GB RDIMMs. Speed depends on processor generation: 4800 MT\/s on 4th gen, 5200 MT\/s on 5th gen. This is half the DIMM slot count of the full R660 (which has 32), and a much lower maximum capacity (the R660 maxes at 8 TB).\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eChannel architecture:\u003c\/strong\u003e eight channels per CPU, one DIMM per channel. The R660xs runs at 1 DPC because it only has eight slots per socket, so there is no 2-DPC speed penalty because there is no 2-DPC configuration available. That is an advantage for memory bandwidth at moderate capacity points.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePractical configurations:\u003c\/strong\u003e 256 GB (8x 32GB RDIMM) is the typical volume spec for general virtualization. 512 GB (8x 64GB) for memory-intensive VMs. 1 TB or more for in-memory caches and dense database nodes. Above 1 TB per node, you are in R660 territory.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRDIMM only.\u003c\/strong\u003e Registered ECC required. UDIMM and LRDIMM are not supported, and there is no persistent-memory option on 16th-generation Dell.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eThe R660xs memory ceiling is the platform's main constraint.\u003c\/strong\u003e 1.5 TB is plenty for the vast majority of dual-socket workloads, but if you anticipate growing past it within the server's productive life, order the R660 now. Memory capacity is a motherboard-level decision and cannot be expanded with an upgrade.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eStorage: 8 SFF Bays, Universal Backplane\u003c\/h2\u003e\u003cp\u003eEight 2.5\" hot-swap bays on the front, supporting any mix of SAS4, SATA, and Gen5 NVMe via the universal backplane. Same backplane lineage as the R660 SFF chassis. Two optional rear 2.5\" bays via the rear riser kit, which consumes a PCIe slot (the same tradeoff as on the R660).\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGen5 NVMe (direct-attach):\u003c\/strong\u003e up to 14 GB\/s per drive. The R660xs supports the same Gen5 NVMe bandwidth as the R660 on the SFF chassis, for cost-reduced vSAN ESA nodes, NVMe-backed databases, and latency-sensitive compute.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSAS4 and SATA SSDs:\u003c\/strong\u003e via PERC H965i (flash-backed cache), H755, H755N, H355, or HBA355i pass-through. Same controller lineup as the R660.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSoftware RAID (S160):\u003c\/strong\u003e available on the R660xs and a real option for low-cost OS and swap volumes. Not recommended for production data, but useful on Kubernetes worker nodes where redundancy is handled at the cluster layer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBoot: BOSS-N1 (cold-swap).\u003c\/strong\u003e Two M.2 NVMe SSDs in hardware RAID 1. The BOSS-N1 on the R660xs is cold-swap, not hot-swap as on the full R660. If you need hot-swap boot drives for a 24\/7-uptime requirement, that is an R660-only feature. For most deployments cold-swap boot is a non-issue, because the unit is offline during a boot drive replacement anyway.\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch2\u003eRAID Controllers\u003c\/h2\u003e\u003cp\u003eIdentical lineup to the R660. Match the controller to the workload:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePERC H965i (PERC 12, front):\u003c\/strong\u003e flash-backed cache, tri-mode. The top pick for hardware RAID on this platform and the controller to specify when you need parity RAID 5 or 6. The R660xs has a dedicated PERC slot, which simplifies the install.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePERC H755 and H755N (PERC 11):\u003c\/strong\u003e lower cost than the H965i if you do not need PERC 12 features. H755N is the NVMe-specific variant.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePERC H355 (PERC 11):\u003c\/strong\u003e entry-level hardware RAID. It does RAID 0, 1, and 10 only; it does not do RAID 5 or 6. Specify the H965i or H755 if you need parity RAID.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHBA355i:\u003c\/strong\u003e pass-through, no RAID. Required for vSAN ESA, which needs direct drive access.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eS160 software RAID:\u003c\/strong\u003e a lower-cost option for boot volumes and OS-only configurations. Not a production data recommendation.\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch2\u003eNetworking\u003c\/h2\u003e\u003cp\u003eDual 1 GbE LOM ports are standard on the rear (on the R660 these are optional; on the R660xs they are built in). One OCP 3.0 mezzanine slot carries the primary high-speed networking, and PCIe NICs are supported in the expansion slots. There is no rack Network Daughter Card here; OCP 3.0 replaced the rNDC mezzanine on 15th and 16th-generation PowerEdge.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1 GbE baseline.\u003c\/strong\u003e The built-in dual 1 GbE is sufficient for management and light traffic; production data traffic should use the OCP slot.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e10 GbE\u003c\/strong\u003e via OCP is the practical minimum for any production workload. A 4-port 10 GbE Base-T OCP adapter is the volume spec.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e25 GbE and 100 GbE\u003c\/strong\u003e are available via OCP and PCIe. 100 GbE is bandwidth overkill for most R660xs deployments; if you need it consistently, the R660 is probably the better fit.\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch2\u003eGPU Support: None\u003c\/h2\u003e\u003cp\u003eThe R660xs does not support GPUs. This is a deliberate Dell platform decision: the thermal envelope and PCIe slot layout do not accommodate even the 75W single-width cards the R660 can handle. If GPU acceleration is a hard requirement (inference, VDI acceleration, transcoding), specify the full \u003ca href=\"\/products\/dell-poweredge-r660-8-bay-build-your-own\"\u003eR660\u003c\/a\u003e or the 2U \u003ca href=\"\/products\/dell-poweredge-r760xs-8-bay-build-your-own\"\u003eR760xs\u003c\/a\u003e instead. Do not try to make this fit; it will not.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003ePower Supplies\u003c\/h2\u003e\u003cp\u003eThe R660xs has the widest PSU range of the 16th gen Dell platforms, including a 600W Platinum option that the full R660 does not offer. All PSUs are hot-swap and configured redundant (1+1). Size the PSU to the populated configuration, not the empty chassis.\u003c\/p\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eConfiguration\u003c\/th\u003e\n\u003cth\u003ePSU recommendation\u003c\/th\u003e\n\u003cth\u003eEstimated peak draw\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLight (Silver 4410Y, partial RAM, SAS or SATA)\u003c\/td\u003e\n\u003ctd\u003e2x 600W Platinum or 700W Titanium\u003c\/td\u003e\n\u003ctd\u003e~290W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBalanced (Silver 4416+ or Gold 6438Y+, full RAM, 4 to 8 SSDs)\u003c\/td\u003e\n\u003ctd\u003e2x 800W Platinum or 1100W Titanium\u003c\/td\u003e\n\u003ctd\u003e~520W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeavy (Gold 6448Y, 1.5 TB RAM, 8 NVMe plus rear bays)\u003c\/td\u003e\n\u003ctd\u003e2x 1400W Platinum\u003c\/td\u003e\n\u003ctd\u003e~820W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003cp\u003eThe 600W Platinum option is genuinely useful for power-budget-constrained datacenters and edge deployments where every watt of overhead matters. A 1100W LVDC -48 VDC option is available for telco. The 1800W Titanium is supported but rarely needed on the xs platform given the TDP ceiling.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eManagement \u0026amp; Security\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eiDRAC9 Enterprise.\u003c\/strong\u003e Same as the R660. Required for unattended deployment, remote console, virtual media, and the Redfish API. Note that iDRAC10 is the 17th gen R670\/R770 controller; 16th-generation hardware including the R660xs ships iDRAC9.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSilicon Root of Trust.\u003c\/strong\u003e Standard on 16th gen: cryptographic verification from boot ROM through OS handoff. Same baseline as the R660, and required for federal compliance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTPM 2.0.\u003c\/strong\u003e Standard, for NIST, CMMC, FedRAMP, HIPAA, and PCI DSS contexts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOpenManage Enterprise\u003c\/strong\u003e for fleet management, the same toolchain as the R660.\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch2\u003ePhysical Specs \u0026amp; Platform Notes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eForm factor:\u003c\/strong\u003e 1U rack, standard depth. The xs uses a traditional motherboard layout rather than the R660's T-shaped board, so the chassis is shorter than the full R660. Confirm exact rack depth against the chassis spec for short-depth racks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePCIe expansion:\u003c\/strong\u003e configuration-dependent. With two CPUs: up to 3 PCIe Gen4 slots (1x x16 plus 2x x8) or up to 2 PCIe Gen5 slots (1x x16 plus 1x x8). You pick Gen5 bandwidth or Gen4 slot count, not both. Plus one OCP 3.0 slot and one dedicated PERC slot.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eParts availability:\u003c\/strong\u003e excellent. This is a current-generation platform in full Dell ProSupport, so drives, PSUs, risers, fans, and BOSS-N1 cards are readily sourced new and on the secondary market.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccessories we recommend:\u003c\/strong\u003e the ReadyRails sliding rail kit with the optional cable-management arm, the BOSS-N1 boot card so the OS stays off the front bays, and the optional LCD security bezel. We quote these with the build rather than guessing part numbers here, since the exact P\/Ns depend on the chassis and rail-depth choice.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCooling and platform notes:\u003c\/strong\u003e seven hot-swap fan modules (Standard or HPR Gold), no DLC option on the xs board, a universal backplane (SAS4, SATA, and NVMe in any mix), and cold-swap BOSS-N1. None of these are 8-Bay-specific; they are motherboard-level traits of every R660xs.\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch2\u003eOur Assessment\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eWhere it excels:\u003c\/strong\u003e the R660xs 8-Bay is the right call when you need 16th gen Dell hardware with dual-socket compute, the current-gen security baseline (Silicon Root of Trust), and Gen5 NVMe support, but the workload does not justify the full R660's price premium. General-purpose virtualization, scale-out clusters (Kubernetes, app servers, web tier), vSAN OSA or ESA nodes at moderate density, edge and branch deployments that benefit from the 600W PSU option, and federal or compliance workloads are its sweet spot. The platform's constraints (no GPU, no DLC, the 1.5 TB memory ceiling, the xs CPU TDP ceiling, 16 DIMM slots) match exactly what most general-purpose dual-socket workloads need.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhere to look instead:\u003c\/strong\u003e any workload that needs more than 1.5 TB of RAM, GPU acceleration, a CPU above the xs TDP ceiling, or in-memory analytics at scale belongs on the full \u003ca href=\"\/products\/dell-poweredge-r660-8-bay-build-your-own\"\u003eR660 8-Bay\u003c\/a\u003e or \u003ca href=\"\/products\/dell-poweredge-r660-10-bay-build-your-own\"\u003eR660 10-Bay\u003c\/a\u003e. For maximum SFF density on this same xs platform, the \u003ca href=\"\/products\/dell-poweredge-r660xs-10-bay-build-your-own\"\u003eR660xs 10-Bay\u003c\/a\u003e is the right chassis; for 3.5\" capacity drives, the \u003ca href=\"\/products\/dell-poweredge-r660xs-4-bay-lff-build-your-own\"\u003eR660xs 4-Bay LFF\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eBottom line:\u003c\/strong\u003e the volume-tier 16th gen 1U dual-socket platform. Specify the HBA355i for vSAN, the H965i for hardware RAID, BOSS-N1 (cold-swap) for boot, and the 600W PSU option if power budget is tight. Do not skip iDRAC9 Enterprise. The typical buyer is standing up general-purpose or scale-out dual-socket nodes at fleet quantity and does not need the full R660's memory, GPU, or DLC headroom.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eWorkload Fit\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eR660xs 8-Bay excels at\u003c\/th\u003e\n\u003cth\u003eConsider alternatives for\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGeneral-purpose dual-socket virtualization, current gen\u003c\/td\u003e\n\u003ctd\u003eMemory above 1.5 TB needed (R660)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eScale-out clusters (Kubernetes, app servers, web tier)\u003c\/td\u003e\n\u003ctd\u003eGPU acceleration needed (R660 or R760)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003evSAN OSA or ESA nodes at moderate density\u003c\/td\u003e\n\u003ctd\u003eCPUs above the xs TDP ceiling (R660 with Smart Flow or DLC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEdge and branch deployments with the 600W PSU option\u003c\/td\u003e\n\u003ctd\u003e10+ SFF bays needed (R660xs 10-Bay)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHCI nodes where per-node memory is moderate\u003c\/td\u003e\n\u003ctd\u003eLFF capacity drives needed (R660xs 4-Bay)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFederal and compliance workloads (Silicon Root of Trust)\u003c\/td\u003e\n\u003ctd\u003eBudget-primary, 15th gen acceptable (R650xs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003chr\u003e\u003ch2\u003eHonest Limitations\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.5 TB memory ceiling.\u003c\/strong\u003e This is the platform's single biggest constraint versus the R660. If there is any chance of needing more memory within the server's life, order the R660 (8 TB max). The R660xs cannot be upgraded; the motherboard has only 16 DIMM slots.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe xs CPU TDP ceiling.\u003c\/strong\u003e No 300W-plus Platinum SKUs are supported, and there is no DLC option to extend the thermal envelope. If you need the highest-core-count or highest-frequency Xeon Scalable parts, this is not the platform.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo GPU support.\u003c\/strong\u003e Not limited GPU like the R660 (2x 75W single-width); literally zero. Do not try to retrofit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBOSS-N1 is cold-swap on the xs, hot-swap on the R660.\u003c\/strong\u003e For most deployments this is a non-issue (you are rebooting to replace a boot drive anyway). For high-uptime SLA environments where every component must be hot-swappable, this is one more reason to specify the R660.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePCIe Gen5 versus Gen4 is a tradeoff, not a choice.\u003c\/strong\u003e You can have 2 Gen5 slots or 3 Gen4 slots, not both. The R660 gives you up to 3 Gen5 slots. If you need both maximum Gen5 bandwidth and maximum PCIe slot count, the xs platform forces a choice.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRear bays cost a PCIe slot\u003c\/strong\u003e (the same tradeoff as the R660). The 2x rear 2.5\" drive cage consumes the center riser position.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo DLC.\u003c\/strong\u003e If your datacenter is already DLC-equipped and you want to standardize on liquid cooling, the R660xs forces a hybrid (air-cooled xs plus DLC R660). Some operations teams would rather standardize on the R660 across the fleet.\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch2\u003eGeneration Context\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eVersus the R650xs (15th gen, Ice Lake):\u003c\/strong\u003e the \u003ca href=\"\/products\/dell-poweredge-r650xs-8-bay-2-5-build-your-own\"\u003eR650xs 8-Bay\u003c\/a\u003e is the previous-generation xs platform: PCIe Gen4, DDR4, iDRAC9, same general layout. For workloads that do not need Gen5 NVMe or DDR5 bandwidth, the R650xs is the value play, typically 30 to 45% lower per unit on refurbished. Where the R660xs wins: Gen5 NVMe (where enabled), DDR5 bandwidth, the 16th gen security baseline, and Dell new-server warranty options. Note that the R650xs uses BOSS-S1 (SATA) while the R660xs uses BOSS-N1 (NVMe); they are not interchangeable.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eVersus the R660 (full-fat, same generation):\u003c\/strong\u003e same 4th and 5th gen Xeon socket, same Gen5 NVMe support on SFF, same RAID controllers, same iDRAC9. The R660 adds 32 DIMM slots and 8 TB max memory, GPU support (2x 75W single-width), the DLC option, the Smart Flow option on the 8-Bay, hot-swap BOSS-N1, the EDSFF E3.S chassis option, and higher CPU TDP support (up to 350W). The R660xs is the right pick when none of those extras matter; the R660 is the right pick when even one of them does.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eVersus the R670 (17th gen, Granite Rapids):\u003c\/strong\u003e the 17th gen platform offers refined PCIe Gen5, DDR5 6400 MT\/s, iDRAC10, and Granite Rapids on-chip AI acceleration. Pricing in 2026 still carries a premium and channel supply is constrained, and there is no announced cost-reduced R670xs variant yet. If you need a current-gen cost-reduced 1U platform, the R660xs is it.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eVersus the other R660xs chassis:\u003c\/strong\u003e the \u003ca href=\"\/products\/dell-poweredge-r660xs-10-bay-build-your-own\"\u003eR660xs 10-Bay\u003c\/a\u003e adds two more SFF bays for storage density (vSAN ESA, NVMe-dense databases); the \u003ca href=\"\/products\/dell-poweredge-r660xs-4-bay-lff-build-your-own\"\u003eR660xs 4-Bay LFF\u003c\/a\u003e takes the same motherboard and pairs it with 3.5\" drives for capacity-tier storage. All three R660xs chassis share this 8-Bay's platform fundamentals.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eReady to Configure?\u003c\/h2\u003e\u003cp\u003eTell us your CPU generation (4th versus 5th Gen) and TDP, memory capacity (remember the 1.5 TB ceiling), storage type, boot configuration, networking speed, PSU preference (the 600W option is available here), and quantity. Not sure whether the R660xs or the full R660 is the right pick? Tell us your max memory per node, GPU need, CPU TDP, and DLC availability, and we will tell you which platform fits. That conversation is part of the quote process.\u003c\/p\u003e\u003cp\u003eCall 1-800-778-1545 or request a quote and we respond within 24 hours. Every R660xs ships after a 12+ hour burn-in and multi-point inspection and carries our 180-day warranty, with Premium one, two, and three-year terms available. Volume pricing applies at 5 units and above. \u003ca href=\"\/pages\/contact\"\u003eContact us\u003c\/a\u003e or \u003ca href=\"\/pages\/quote-cart\"\u003erequest a quote\u003c\/a\u003e to start a build.\u003c\/p\u003e","brand":"Dell","offers":[{"title":"Default Title","offer_id":45951521521863,"sku":"BP-016800","price":9144.91,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0748\/4493\/0247\/files\/server-design-lab-dell-poweredge-r660-8-bay-25-configured-9206422.png?v=1765539996"},{"product_id":"dell-poweredge-r660xs-10-bay-build-your-own","title":"Dell PowerEdge R660xs 10-Bay 2.5\" Drives [16th Gen: New]","description":"\u003cp\u003eThe Dell PowerEdge R660xs 10-Bay 2.5\" is the maximum small-form-factor density configuration of Dell's 16th-generation 1U dual-socket cost-optimized platform. Ten hot-swap 2.5\" bays sit on a universal backplane, paired with 4th Gen Intel Xeon Scalable (Sapphire Rapids) or 5th Gen (Emerald Rapids) processors, DDR5 memory, and direct-attach Gen5 NVMe. These are sold as New or Surplus New, in keeping with how 16th-generation hardware reaches the secondary market. Surplus New means genuinely unused, new-old-stock units from excess inventory: never deployed, priced below Dell-direct new, and covered by the Wholesale Servers warranty path described below.\u003c\/p\u003e\u003cp\u003eThe xs line is Dell's cost-optimized cut of the R660. It keeps the same Sapphire and Emerald Rapids socket and the same chassis options, but trims the parts of the full R660 that drive cost: 16 DDR5 DIMM slots instead of 32, a lower CPU TDP ceiling, no GPU support, and no direct liquid cooling. The 10-Bay is the right configuration when you want that cost-reduced platform and you also need vSAN ESA-class drive count, NVMe-dense database storage, or high local-cache capacity per node. For compute-primary work that fits in eight bays, the R660xs 8-Bay is the cheaper starting point; for 3.5\" capacity drives, the R660xs 4-Bay LFF is the right chassis.\u003c\/p\u003e\u003cp\u003eTo configure a build, call 1-800-778-1545 and we respond within 24 hours with a formal quote. Every server ships after a 12+ hour burn-in and a multi-point inspection, and is backed by our 180-day warranty with one, two, and three-year Premium options available. Volume pricing applies at 5 units and above, which is where most R660xs cluster and fleet orders land.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eWhere the R660xs 10-Bay Fits in the Family\u003c\/h2\u003e\u003cp\u003eThe R660xs ships in three chassis layouts, all on the same motherboard and platform: the \u003ca href=\"\/products\/dell-poweredge-r660xs-8-bay-build-your-own\"\u003eR660xs 8-Bay 2.5\"\u003c\/a\u003e compute-primary configuration, this 10-Bay maximum-SFF-density configuration, and the \u003ca href=\"\/products\/dell-poweredge-r660xs-4-bay-lff-build-your-own\"\u003eR660xs 4-Bay 3.5\" LFF\u003c\/a\u003e capacity configuration. The platform underneath is identical across all three; the choice is purely about how you lay out storage.\u003c\/p\u003e\u003cp\u003eThe 10-Bay is the densest SFF layout the xs platform offers. The two extra bays over the 8-Bay matter most for vSAN ESA nodes, NVMe-backed databases, and HCI designs where carrying more local capacity per node reduces total node count. If you need more drive density than ten 2.5\" bays, you have moved past what the xs platform provides and into the full \u003ca href=\"\/products\/dell-poweredge-r660-10-bay-build-your-own\"\u003eR660 10-Bay\u003c\/a\u003e, which adds the EDSFF E3.S option, 32 DIMM slots, GPU support, and direct liquid cooling.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eStorage: 10 SFF Bays on a Universal Backplane\u003c\/h2\u003e\u003cp\u003eTen 2.5\" hot-swap bays across the front on a universal backplane that accepts any mix of SAS4, SATA, and Gen5 NVMe in the same chassis. An optional rear 2x 2.5\" drive cage is available through the rear riser kit, which consumes a PCIe slot, so plan the expansion layout before specifying it: on a 10-Bay you often also want that riser position for a Gen5 NIC or storage card.\u003c\/p\u003e\u003cp\u003eThis is the highest-density SFF configuration on the R660xs. For higher per-node density you step up to the full R660, which adds the 14 or 16-drive EDSFF E3.S option that no xs chassis carries.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGen5 NVMe (direct-attach):\u003c\/strong\u003e up to roughly 14 GB\/s per drive, the defining capability of this chassis. Ten Gen5 NVMe drives represent meaningful aggregate bandwidth even on the leaner xs board.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSAS4 and SATA SSDs:\u003c\/strong\u003e driven by the PERC H965i for hardware RAID or the HBA355i for pass-through, both covered in Storage Controllers below.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMixed layouts:\u003c\/strong\u003e the universal backplane handles SAS, SATA, and NVMe in any combination without a backplane swap. A common 10-Bay build is two SAS or SATA SSDs for the OS and logs plus eight NVMe drives for data.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBoot:\u003c\/strong\u003e BOSS-N1 with two mirrored M.2 NVMe SSDs on a dedicated card. On the xs chassis the BOSS-N1 is cold-swap; the hot-swap rear BOSS tray is a full R660 feature. Boot stays off the front bays, leaving all ten for data.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eWhen ten bays beats eight on this platform: vSAN ESA single-cluster nodes that target six to eight capacity-tier drives plus two cache-tier drives, NVMe-backed databases whose working set spans six to ten drives, and HCI nodes carrying more local capacity to cut overall node count. For compute-primary work where eight bays cover a boot mirror plus data, the 8-Bay is cheaper and otherwise identical.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eStorage Controllers\u003c\/h2\u003e\u003cp\u003eThe R660xs runs Dell's PERC 12 and PERC 11 controller families plus software RAID and pass-through HBAs. Match the controller to the workload, not the price sheet:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePERC H965i (PERC 12):\u003c\/strong\u003e the current hardware-RAID default, with onboard cache and battery backing, for write-intensive or transactional workloads where local parity RAID matters. This is the controller to quote when you need RAID 5 or 6.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePERC H755 and H755N (PERC 11):\u003c\/strong\u003e the prior-generation hardware-RAID option; H755N is the NVMe-specific variant. A solid mixed or read-heavy choice and common on units that shipped earlier in the platform's life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePERC H355 (PERC 11):\u003c\/strong\u003e entry hardware RAID with one important constraint: the H355 does RAID 0, 1, and 10 only. It does not do RAID 5 or 6. If you need parity RAID, specify the H965i or H755, not the H355.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHBA355i (pass-through):\u003c\/strong\u003e for software-defined storage stacks. vSAN ESA requires direct drive access, so ESA nodes take the HBA355i, never a PERC RAID controller.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eS160 (software RAID):\u003c\/strong\u003e chipset software RAID for dev, test, and light workloads only. Not a production recommendation.\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch2\u003eProcessors\u003c\/h2\u003e\u003cp\u003eTwo sockets, Socket E (LGA 4677), on Intel's C741 chipset. The R660xs accepts both 4th Generation Intel Xeon Scalable (Sapphire Rapids, 2023) and 5th Generation (Emerald Rapids, 2024) in the same socket, so you choose the generation by workload and budget rather than by chassis.\u003c\/p\u003e\u003cp\u003eThe xs distinction is the CPU TDP ceiling. Where the full R660 takes processors up to 350W, the cost-optimized xs board is built for a lower thermal envelope, roughly a 225W-class ceiling that should be confirmed against the specific CPU SKU at quote time. In practice that covers the great majority of the Sapphire and Emerald Rapids line, including the mainstream Silver and Gold parts most surplus and refurbished buyers deploy. The very top-bin 56 and 64-core 350W parts are where you would move to the full R660.\u003c\/p\u003e\u003cp\u003eBoth generations bring on-die acceleration that earlier Dell generations did not have: AMX for AI inference, QuickAssist for crypto and compression offload. For a dense-storage node the practical CPU question is core count for the storage and HCI stack rather than peak clocks, and a mid-range Silver or lower Gold part usually pairs well with a 10-Bay NVMe build.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eMemory\u003c\/h2\u003e\u003cp\u003eSixteen DDR5 RDIMM slots, eight per CPU across eight memory channels at one DIMM per channel. This is the core xs trade against the full R660's 32 slots: the R660xs gives up half the DIMM capacity to reduce cost. Registered ECC DDR5 only, with no LRDIMM tier and no persistent-memory option on 16th-generation Dell.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpeed:\u003c\/strong\u003e DDR5-4800 on 4th Gen Sapphire Rapids; up to DDR5-5600 on 5th Gen Emerald Rapids. Because the xs runs one DIMM per channel, it avoids the 2-DPC speed step-down that fully-populated full-R660 boards take.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacity:\u003c\/strong\u003e up to 1.5 TB across the sixteen slots; confirm the exact RDIMM tier per SKU at quote time, since the ceiling depends on the largest qualified module.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePopulation:\u003c\/strong\u003e populate in balanced sets across both CPUs to keep all eight channels active per socket. An unbalanced fill silently costs memory bandwidth, a common field mistake on dual-socket builds.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eFor most 10-Bay storage and HCI workloads the memory question is bandwidth and balanced population, not raw ceiling. If you genuinely need more than 1.5 TB per node, that is one of the few hard reasons to leave the xs platform for the full R660.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eNetworking and PCIe Expansion\u003c\/h2\u003e\u003cp\u003eNetworking is OCP NIC 3.0, the 16th-generation standard. The board carries a built-in dual 1 GbE LOM for management and light connectivity, and the OCP 3.0 slot takes 10, 25, or 100 GbE adapters without consuming a PCIe slot. There is no rack Network Daughter Card here; OCP 3.0 replaced the rNDC mezzanine on 15th and 16th-generation PowerEdge.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOCP 3.0 slot:\u003c\/strong\u003e one slot for the primary data NIC at 10, 25, or 100 GbE, hot-pluggable on this generation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePCIe slots:\u003c\/strong\u003e the xs riser layout gives two Gen5 slots or three Gen4 slots depending on the riser chosen, plus the dedicated PERC slot and the OCP position. The optional rear drive cage takes one of these riser positions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneration tradeoff:\u003c\/strong\u003e Gen5 doubles per-lane bandwidth over Gen4 and matters for Gen5 NVMe and 100 GbE-class adapters; Gen4 risers give the higher slot count. Pick the riser by whether bandwidth or slot count is the constraint.\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch2\u003eGPU Support\u003c\/h2\u003e\u003cp\u003eThe R660xs is not a GPU platform. The cost-optimized xs board does not carry the power delivery, thermal headroom, or x16 riser budget for a meaningful accelerator, and Dell does not qualify GPUs on it. This is by design: GPU support is one of the features the xs cut to reduce cost.\u003c\/p\u003e\u003cp\u003eIf you need on-node acceleration, the full \u003ca href=\"\/products\/dell-poweredge-r660-10-bay-build-your-own\"\u003eR660 10-Bay\u003c\/a\u003e supports up to three single-width GPUs in 1U, and the 2U R760 family takes double-width cards. For dense inference or training, a 2U platform is the right answer rather than any 1U xs chassis.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eManagement: iDRAC9 Generation\u003c\/h2\u003e\u003cp\u003eThe R660xs runs iDRAC9 with the full 16th-generation cyber-resilient security stack. Note that 16th-generation hardware ships iDRAC9, not iDRAC10: iDRAC10 is the 17th-generation controller. The management feature set here is the same iDRAC9 platform across the R660, the R760, and the xs variants.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eiDRAC9 Enterprise or Datacenter:\u003c\/strong\u003e full out-of-band management, virtual console, and lifecycle automation. Enterprise is the production baseline.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLifecycle Controller:\u003c\/strong\u003e agent-free firmware updates, bare-metal deployment, and configuration persistence.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecurity:\u003c\/strong\u003e Silicon Root of Trust, signed firmware, Secure Boot, System Lockdown, and multi-factor authentication, plus a TPM 2.0 option for NIST, CMMC, FedRAMP, HIPAA, and PCI DSS contexts.\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch2\u003ePower and Cooling\u003c\/h2\u003e\u003cp\u003eThe R660xs takes hot-plug redundant Platinum and Titanium power supplies and shares the 15th and 16th-generation PSU line, including the cost-optimized 600W option unique to the xs tier. NVMe-dense 10-Bay builds draw more than compute-primary 8-Bay builds, so size the PSU to the populated drive count, not the empty chassis.\u003c\/p\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eConfiguration\u003c\/th\u003e\n\u003cth\u003ePSU recommendation\u003c\/th\u003e\n\u003cth\u003eEstimated peak draw\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLight: lower Silver CPU, partial RAM, SAS or SATA SSDs\u003c\/td\u003e\n\u003ctd\u003e2x 700W Titanium\u003c\/td\u003e\n\u003ctd\u003e~330W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBalanced: mid Silver or Gold CPU, full RAM, six to ten NVMe\u003c\/td\u003e\n\u003ctd\u003e2x 1100W Titanium\u003c\/td\u003e\n\u003ctd\u003e~620W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeavy: top xs Gold CPU, 1.5 TB RAM, ten NVMe plus rear bays\u003c\/td\u003e\n\u003ctd\u003e2x 1400W Platinum\u003c\/td\u003e\n\u003ctd\u003e~900W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003cp\u003eThe 600W PSU is supported but rarely right on a 10-Bay: a fully-populated Gen5 NVMe configuration will outdraw that envelope under peak load. Treat 1100W Titanium as the practical floor for a fully-populated 10-Bay NVMe node. Cooling is standard redundant hot-swap fans; there is no direct-liquid-cooling option on the xs platform.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003ePhysical Specs \u0026amp; Platform Notes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eForm factor:\u003c\/strong\u003e 1U rack, standard depth, regulatory model E87S. Confirm exact rack depth against the chassis spec when planning short-depth racks or cable-management clearance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePCIe expansion:\u003c\/strong\u003e two Gen5 or three Gen4 riser slots plus the dedicated PERC slot and the OCP 3.0 position; the optional rear drive cage trades one riser slot.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eParts availability:\u003c\/strong\u003e excellent. This is a current-generation platform in full Dell ProSupport, so drives, PSUs, risers, fans, and BOSS-N1 cards are readily sourced new and on the secondary market.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccessories we recommend:\u003c\/strong\u003e the ReadyRails sliding rail kit with the optional cable-management arm, the BOSS-N1 boot card so the OS stays off the front bays, and a front bezel for dust and physical security. We quote these as part of the build rather than guessing at part numbers here, since the exact P\/Ns depend on the chassis and rail-depth choice.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlatform notes:\u003c\/strong\u003e universal backplane (SAS4, SATA, and NVMe in any mix), cold-swap BOSS-N1 on the xs chassis, no GPU and no DLC on the xs board, and a CPU TDP ceiling below the full R660. None of these are 10-Bay-specific; they are motherboard-level traits of every R660xs.\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch2\u003eOur Assessment\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eWhere it excels:\u003c\/strong\u003e the R660xs 10-Bay is the right call when you want the xs platform's cost advantages, the 600W PSU option, no GPU or Smart Flow upcharge, and a dedicated PERC slot, but you also need vSAN ESA-class drive count or NVMe-dense database storage per node. vSAN ESA single-cluster nodes, NVMe-backed databases with a six to ten-drive footprint, dense HCI nodes, and CDN edge or inference cache tiers are its sweet spot. It is dense SFF storage at express-tier economics.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhere to look instead:\u003c\/strong\u003e workloads that need any xs constraint relaxed, such as memory above 1.5 TB, CPUs above the xs TDP ceiling, GPU support, hot-swap boot, or EDSFF E3.S density, belong on the full \u003ca href=\"\/products\/dell-poweredge-r660-10-bay-build-your-own\"\u003eR660 10-Bay\u003c\/a\u003e. Compute-primary work where storage is modest belongs on the cheaper \u003ca href=\"\/products\/dell-poweredge-r660xs-8-bay-build-your-own\"\u003eR660xs 8-Bay\u003c\/a\u003e. If 3.5\" capacity drives are the point, the \u003ca href=\"\/products\/dell-poweredge-r660xs-4-bay-lff-build-your-own\"\u003eR660xs 4-Bay LFF\u003c\/a\u003e is the chassis.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eBottom line:\u003c\/strong\u003e this is the dense-SFF node of the 16th-generation 1U cost-optimized line. HBA355i for vSAN ESA, H965i for hardware parity RAID, BOSS-N1 for boot, and 1100W Titanium or larger once the NVMe bays fill. It carries the same iDRAC9 and Silicon Root of Trust baseline as the full R660 at a lower platform cost. The typical buyer is building HCI or storage-dense cluster nodes at fleet quantity and does not need the full R660's memory, GPU, or DLC headroom.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eWhere the R660xs 10-Bay Fits in 2026\u003c\/h2\u003e\u003cp\u003eThe R660xs is current-generation hardware as of 2026, in full Dell support, so there is no end-of-life caveat to manage here. The positioning question runs up and down the generations rather than being a support-status warning.\u003c\/p\u003e\u003cp\u003eAgainst the prior generation, the 15th-gen \u003ca href=\"\/products\/dell-poweredge-r650xs-10-bay-2-5-build-your-own-server\"\u003eR650xs 10-Bay\u003c\/a\u003e is the value step-down: Ice Lake, DDR4, PCIe Gen4, and SATA-based BOSS-S1 boot, typically well below the R660xs on the secondary market. Choose the R650xs when you do not need Gen5 NVMe bandwidth, DDR5, or NVMe boot. The R660xs 10-Bay earns the premium on Gen5 NVMe, DDR5, the 16th-generation security baseline, and BOSS-N1 NVMe boot.\u003c\/p\u003e\u003cp\u003eAbove it, the 17th-generation R670 and R770 (Granite Rapids) bring refined PCIe Gen5, faster DDR5, iDRAC10, and on-die AI acceleration. There is no announced cost-optimized 17th-gen xs variant at this time, so for a current-generation dense-SFF node at xs economics the R660xs 10-Bay remains the answer.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eHonest Limitations\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe xs platform ceilings apply.\u003c\/strong\u003e Sixteen DIMM slots and a 1.5 TB memory ceiling, a CPU TDP ceiling below the full R660, no GPU, no DLC, and cold-swap rather than hot-swap boot. These are motherboard-level constraints on every R660xs, not anything the 10-Bay chassis adds or removes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTen bays is the ceiling on this platform.\u003c\/strong\u003e The xs chassis does not expand past ten 2.5\" bays. Higher local NVMe density per node means the full R660 EDSFF E3.S chassis, which is a different platform.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRear bays cost a PCIe slot.\u003c\/strong\u003e The optional rear 2x 2.5\" cage takes a riser position. On a 10-Bay you may also want that slot for a Gen5 NIC or storage card, so plan the PCIe layout before adding rear bays.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNVMe power draw is real.\u003c\/strong\u003e Ten Gen5 NVMe drives can draw roughly 70 to 100W on their own, before CPU and memory. Do not undersize the PSU; the 600W option that suits the 8-Bay is generally too small here.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003evSAN ESA requires the HBA355i.\u003c\/strong\u003e Do not specify a PERC RAID controller for ESA; the architecture requires direct drive access. This catches buyers who default to a PERC out of habit.\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch2\u003eWorkload Fit\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eRight for\u003c\/th\u003e\n\u003cth\u003eConsider alternatives for\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003evSAN ESA nodes at cost-reduced cluster economics\u003c\/td\u003e\n\u003ctd\u003eMemory above 1.5 TB needed, full R660 10-Bay\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNVMe-backed databases with a six to ten-drive footprint\u003c\/td\u003e\n\u003ctd\u003eCPUs above the xs TDP ceiling, full R660\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHCI nodes with dense local storage per node\u003c\/td\u003e\n\u003ctd\u003e14+ EDSFF E3.S density, full R660 EDSFF chassis\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCDN edge and inference cache tiers\u003c\/td\u003e\n\u003ctd\u003eCompute-primary, eight bays sufficient, R660xs 8-Bay\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompliance-sensitive dense-storage nodes (Silicon Root of Trust)\u003c\/td\u003e\n\u003ctd\u003e3.5\" capacity drives needed, R660xs 4-Bay LFF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNew and Surplus New pricing with a warranty path\u003c\/td\u003e\n\u003ctd\u003eBudget-primary, 15th gen acceptable, R650xs 10-Bay\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003chr\u003e\u003ch2\u003eWhere to Look Instead\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompute-primary, eight bays cover it:\u003c\/strong\u003e the \u003ca href=\"\/products\/dell-poweredge-r660xs-8-bay-build-your-own\"\u003eR660xs 8-Bay\u003c\/a\u003e, same platform, cheaper, fewer bays.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3.5\" capacity tier:\u003c\/strong\u003e the \u003ca href=\"\/products\/dell-poweredge-r660xs-4-bay-lff-build-your-own\"\u003eR660xs 4-Bay LFF\u003c\/a\u003e for backups, archives, and file servers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNeed more memory, GPU, DLC, or EDSFF density:\u003c\/strong\u003e the full \u003ca href=\"\/products\/dell-poweredge-r660-10-bay-build-your-own\"\u003eR660 10-Bay\u003c\/a\u003e at the same generation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2U cost-optimized:\u003c\/strong\u003e the \u003ca href=\"\/products\/dell-poweredge-r760xs-8-bay-build-your-own\"\u003eR760xs 8-Bay\u003c\/a\u003e when a 2U chassis and more expansion suit the rack better.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrevious generation at lower cost:\u003c\/strong\u003e the 15th-gen \u003ca href=\"\/products\/dell-poweredge-r650xs-10-bay-2-5-build-your-own-server\"\u003eR650xs 10-Bay\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCross-vendor:\u003c\/strong\u003e the HPE counterpart at this tier is the ProLiant DL360 Gen11. We do not currently stock it; ask and we will advise on the closest in-stock equivalent.\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch2\u003eReady to Configure?\u003c\/h2\u003e\u003cp\u003eTell us your CPU generation (4th versus 5th Gen), memory capacity, drive count and type (the SAS, SATA, and NVMe mix), whether you need the rear bays and can spend the PCIe slot, boot configuration, networking speed, and quantity. If you are sizing for vSAN ESA, include cluster size, the cache-tier versus capacity-tier drive split, and node-count plans, since ESA sizing is part of the quote conversation.\u003c\/p\u003e\u003cp\u003eCall 1-800-778-1545 or request a quote and we respond within 24 hours. Every R660xs ships after a 12+ hour burn-in and multi-point inspection and carries our 180-day warranty, with Premium one, two, and three-year terms available. Volume pricing applies at 5 units and above. \u003ca href=\"\/pages\/contact\"\u003eContact us\u003c\/a\u003e or \u003ca href=\"\/pages\/quote-cart\"\u003erequest a quote\u003c\/a\u003e to start a build.\u003c\/p\u003e","brand":"Dell","offers":[{"title":"Default Title","offer_id":45951539380423,"sku":"BP-016998","price":7614.76,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0748\/4493\/0247\/files\/server-design-lab-dell-poweredge-r660-10-bay-25-configured-8913808.png?v=1765540023"},{"product_id":"dell-poweredge-r660xs-4-bay-lff-build-your-own","title":"Dell PowerEdge R660xs 4-Bay 3.5\" Drives [16th Gen: New]","description":"\u003cp\u003eThe R660xs 4-Bay 3.5\" is the large-form-factor (LFF) configuration of Dell's 16th-generation 1U dual-socket cost-optimized platform. It pairs four 3.5\" hot-swap bays with the same 4th and 5th Gen Intel Xeon Scalable socket, DDR5 memory, and PCIe Gen5 expansion as the rest of the R660xs family. This is the chassis to reach for when you want current-generation dual-socket compute alongside capacity-tier storage on a single node: backup targets, file servers, log aggregation, archive tiers, and edge sites where 3.5\" drives are the most cost-effective dollar-per-terabyte option.\u003c\/p\u003e\n\u003cp\u003eAs a 16th-gen platform, this server is offered New and Surplus New. Surplus New means a genuinely unused unit from excess inventory: never previously deployed, but sourced outside Dell's standard new-sales channel, which is why it prices below Dell-direct new. The same Wholesale Servers warranty coverage applies to both conditions. This page covers what is specific to the LFF chassis: 3.5\" capacity-drive support, the SAS\/SATA-only front backplane, and when LFF is the right answer against the 2.5\" SFF companions. For the full platform discussion that the whole R660xs family shares, the primary page is the \u003ca href=\"\/products\/dell-poweredge-r660xs-10-bay-build-your-own\"\u003eR660xs 10-Bay 2.5\"\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eTo configure a build, call 1-800-778-1545 or request a quote online and we respond within 24 hours. Every server ships after a 12+ hour burn-in and inspection and is covered by our 180-day warranty, and volume pricing applies at 5 units and above.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eWhen 4 LFF Bays Is the Right Choice\u003c\/h2\u003e\n\u003cp\u003eThe 4-Bay LFF exists for one reason: dollar-per-terabyte capacity in a 1U footprint, on a current-generation dual-socket node. The 2.5\" SFF companions (the 8-Bay and 10-Bay) win on drive count and native NVMe, but a 3.5\" nearline SAS drive remains the cheapest way to buy bulk capacity, and four of them in a 1U chassis is the densest LFF layout Dell offers in this generation.\u003c\/p\u003e\n\u003cp\u003ePick this chassis when the workload is capacity-led rather than IOPS-led, and when keeping the storage on the same node as the compute matters: a backup repository that also runs the backup software, a file server, a SIEM data tier, or an edge node where local 3.5\" drives are easy to source. If the workload is flash-led, IOPS-bound, or needs more than four spindles, the decision points elsewhere, and the sections below say where.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eStorage: 4 3.5\" LFF Bays\u003c\/h2\u003e\n\u003cp\u003eFour 3.5\" hot-swap bays on the front, supporting SAS and SATA hard drives and SSDs. At 24 TB per drive, that is up to 96 TB raw per node; with RAID 6 across all four, roughly 36-48 TB usable depending on drive size. An optional rear 2x 2.5\" drive kit adds a small fast tier, and those rear bays can be NVMe if you want flash alongside the LFF capacity.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e3.5\" SAS HDD:\u003c\/strong\u003e the dollar-per-terabyte workhorse for capacity tiers. Common builds are 4x 18 TB or 4x 24 TB nearline SAS, giving 72-96 TB raw per node.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3.5\" SATA HDD:\u003c\/strong\u003e lower cost than SAS, with lower sustained performance and a higher failure rate. Reasonable for cold archive tiers where reads are infrequent.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3.5\" SATA SSD:\u003c\/strong\u003e available, but worse dollar-per-terabyte than 2.5\" SATA SSDs in the SFF chassis. If the workload is flash-led, the 8-Bay or 10-Bay SFF chassis is the better fit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo native NVMe on the front bays:\u003c\/strong\u003e the 4-Bay LFF backplane is SAS\/SATA only. NVMe on this chassis is available only through the optional rear 2x 2.5\" drive kit, which costs one PCIe slot.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBoot: BOSS-N1 (cold-swap):\u003c\/strong\u003e the same boot subsystem as the rest of the R660xs family. Two M.2 NVMe SSDs in hardware RAID 1 on a dedicated card, keeping the OS off the four front bays so all of them stay available for data. The N1 is NVMe and cold-swap on the xs, not the hot-swap rear module of the larger R660.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eStorage Controllers for LFF Capacity Tiers\u003c\/h2\u003e\n\u003cp\u003eThe controller lineup is the full R660xs family set (PERC H965i, H755, H755N, H355, the HBA355i pass-through adapter, and S160 software RAID), but the workload pattern on LFF capacity arrays narrows the sensible picks:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePERC H965i or H755 with battery-backed cache:\u003c\/strong\u003e the right pick for LFF parity arrays. Write coalescing through cache matters on spinning disk, where seek latency dominates write IOPS. Both support RAID 5, 6, 10, 50, and 60.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRAID 6 for large-capacity arrays:\u003c\/strong\u003e on any SAS array at 8 TB drives and up, double parity is the floor. Single-parity RAID 5 carries unacceptable rebuild risk at modern drive sizes; a second drive failure during a 12-36 hour rebuild window on a 4-disk array is a real exposure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePERC H355:\u003c\/strong\u003e a parity-free controller. The H355 supports RAID 0, 1, and 10 only, not RAID 5 or 6, so it is not the controller for a parity capacity array. Use the H755 or H965i where parity is required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHBA355i pass-through:\u003c\/strong\u003e the right call when redundancy is handled in software (ZFS, Ceph, or backup-target software that manages its own resilience). Pass-through hands the raw drives to the OS with no RAID layer.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eProcessors\u003c\/h2\u003e\n\u003cp\u003eThe R660xs takes up to two Intel Xeon Scalable processors in Socket E1 (LGA 4677) on the Intel C741 chipset. Both 4th Gen (Sapphire Rapids, 2023) and 5th Gen (Emerald Rapids, 2024) are supported in the same socket, so the generation choice is a price-and-availability decision rather than a board change. The xs is cost-optimized, so its practical CPU TDP ceiling lands around 225W (confirm the exact ceiling per SKU); the higher-TDP top-bin parts that the full R660 accepts are out of scope here.\u003c\/p\u003e\n\u003cp\u003eFor LFF capacity-tier builds, the CPU is rarely the bottleneck. A Silver 4410Y (12-core, 150W) or Silver 4416+ (20-core, 165W) is usually plenty for a backup target or file server. Spending on Gold-tier parts for a capacity node is seldom justified; if a build genuinely needs both heavy compute and LFF storage on one node, that is usually a signal the storage should move to SFF NVMe with a separate capacity tier. Top-bin CPUs require the high-performance heatsink, and a common field error is ordering a high-TDP CPU against the standard heatsink. A second common trap is the single-socket build: populating one socket halves the available memory channels and PCIe lanes, so size the socket count to the memory and expansion the workload actually needs.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eMemory\u003c\/h2\u003e\n\u003cp\u003eThe xs carries 16 DDR5 RDIMM slots, eight per CPU, wired as eight channels per CPU at one DIMM per channel. That channel count is the correct figure for Sapphire and Emerald Rapids; copy that claims twelve channels per CPU is wrong for this platform. The xs uses half the 32-slot topology of the full R660, which is the central cost-optimization tradeoff and the reason the memory ceiling is lower.\u003c\/p\u003e\n\u003cp\u003eSpeeds run at DDR5-4800 on 4th Gen parts and up to DDR5-5200 to 5600 on 5th Gen parts at one DIMM per channel. The platform is RDIMM only; there is no LRDIMM or persistent-memory path on the xs. Maximum capacity is roughly 1.5 TB using 96 GB RDIMMs across all 16 slots (confirm the ceiling per SKU and DIMM availability). For LFF capacity workloads, 256 GB to 512 GB is the common population; backup and file-serving tiers rarely need the full ceiling, and the budget is better spent on drives.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eNetworking and PCIe Expansion\u003c\/h2\u003e\n\u003cp\u003eNetworking is OCP NIC 3.0, the current Dell modular standard, not the older rack Network Daughter Card of earlier generations. The base configuration provides dual 1 GbE LOM, with 10, 25, or 100 GbE available through the OCP 3.0 slot, plus an optional add-in LOM card. For a capacity node, dual 10 or 25 GbE is the typical pick: enough to move bulk data without overspending on 100 GbE that spinning disk cannot saturate.\u003c\/p\u003e\n\u003cp\u003ePCIe expansion is configuration-dependent on this 1U chassis: typically two PCIe Gen5 slots or three Gen4 slots, alongside the OCP slot and a dedicated slot for the PERC controller. The most important tradeoff to plan for on the LFF chassis is the optional rear 2x 2.5\" drive kit, which consumes one of those PCIe slots. If you want both rear NVMe and a high-speed NIC, account for the slot budget up front rather than discovering the conflict at rack time.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eGPU Support\u003c\/h2\u003e\n\u003cp\u003eThe R660xs is not a GPU platform. The cost-optimized 1U chassis does not provide the slot width, power delivery, or thermal envelope for accelerators, and the LFF variant in particular spends its limited expansion budget on storage and networking. If the workload needs GPU compute, the full \u003ca href=\"\/products\/dell-poweredge-r660-10-bay-build-your-own\"\u003eR660 (1U)\u003c\/a\u003e supports up to three single-wide cards, and the 2U R760 supports double-wide accelerators. For LFF capacity plus accelerators on one node, a 2U platform is the right starting point. Do not plan GPU work around this chassis.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eManagement: iDRAC9 Generation\u003c\/h2\u003e\n\u003cp\u003eThe R660xs ships with iDRAC9, the 16th-generation Dell management controller, with the Lifecycle Controller for agent-free firmware and configuration management. Note that 16th-gen hardware uses iDRAC9; iDRAC10 is the 17th-generation controller and does not apply here. iDRAC9 Enterprise is the recommended license tier for remote KVM, virtual media, and automated deployment.\u003c\/p\u003e\n\u003cp\u003eThe security baseline is the full 16th-gen stack: Silicon Root of Trust anchoring the firmware verification chain, Secure Boot, System Lockdown, multi-factor authentication, and TPM 2.0. This is the same management and security platform as the rest of the R660xs family; for the full Lifecycle Controller and OpenManage Enterprise integration notes, the primary \u003ca href=\"\/products\/dell-poweredge-r660xs-10-bay-build-your-own\"\u003eR660xs 10-Bay page\u003c\/a\u003e carries the extended discussion.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003ePower and Cooling\u003c\/h2\u003e\n\u003cp\u003eLFF capacity-tier builds are usually the lowest-power configurations in the R660xs family, and the xs-exclusive 600W Platinum PSU is well-suited to them: peak draw on a typical backup or file-server build rarely exceeds 350W. The R660xs is air-cooled; direct liquid cooling is not offered on this platform. All PSUs are hot-plug and redundant.\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eConfiguration\u003c\/th\u003e\n\u003cth\u003ePSU recommendation\u003c\/th\u003e\n\u003cth\u003eEst. peak draw\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackup target (Silver 4410Y, 256 GB RAM, 4x 18 TB SAS)\u003c\/td\u003e\n\u003ctd\u003e2x 600W Platinum\u003c\/td\u003e\n\u003ctd\u003e~280W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFile server (Silver 4416+, 512 GB RAM, 4x 24 TB SAS plus rear NVMe)\u003c\/td\u003e\n\u003ctd\u003e2x 700W Titanium\u003c\/td\u003e\n\u003ctd\u003e~360W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeavy LFF (Gold 6438Y, 1.5 TB RAM, 4x SAS plus 2x rear NVMe)\u003c\/td\u003e\n\u003ctd\u003e2x 800W Platinum\u003c\/td\u003e\n\u003ctd\u003e~520W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003eThe 600W Platinum is the right size for most LFF builds. PSUs of 1100W and above are oversized on this chassis unless you are stacking the highest-TDP CPUs the xs accepts, and at that point the LFF storage choice itself is worth re-examining.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003ePhysical Specs and Platform Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eForm factor:\u003c\/strong\u003e 1U rack chassis, full rack depth. The four 3.5\" front bays set the chassis layout; the LFF backplane is the physical difference from the SFF companions on the same 1U motherboard.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePCIe expansion:\u003c\/strong\u003e configuration-dependent risers giving two Gen5 or three Gen4 slots, plus the OCP 3.0 slot and the dedicated PERC slot. The rear drive kit, when fitted, claims one slot.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eParts availability:\u003c\/strong\u003e strong. The 16th-gen platform is current-generation, with Dell ProSupport coverage available on new units and a mature spares channel for drives, PSUs, and rails.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccessories we recommend:\u003c\/strong\u003e the ReadyRails sliding rail kit for tool-less mounting, an optional LCD bezel for at-a-glance status, and the cable management arm where rear access matters. We quote the exact rail and bezel part numbers with the build to match your rack and configuration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlatform notes:\u003c\/strong\u003e the front backplane is SAS\/SATA only (no front NVMe); boot is BOSS-N1 cold-swap, so plan boot-drive service as a powered-down task rather than a hot-swap; and there is no direct-liquid-cooling option on the xs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eOur Assessment\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWhere it excels:\u003c\/strong\u003e current-generation dual-socket compute paired with capacity-tier 3.5\" storage on one node. The R660xs platform advantages (the 600W PSU floor, no DLC overhead, a dedicated PERC slot, the 16th-gen security baseline) combine with LFF dollar-per-terabyte economics to make this the right 1U chassis for backup targets, file servers, log aggregation, SIEM data tiers, and edge capacity sites.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhere to look instead:\u003c\/strong\u003e any workload that benefits from front-bay NVMe belongs on an SFF companion, the \u003ca href=\"\/products\/dell-poweredge-r660xs-8-bay-build-your-own\"\u003eR660xs 8-Bay\u003c\/a\u003e for compute-primary builds or the \u003ca href=\"\/products\/dell-poweredge-r660xs-10-bay-build-your-own\"\u003eR660xs 10-Bay\u003c\/a\u003e for dense NVMe. Anything bottlenecked by spinning-disk IOPS, any production database tier, or any vSAN ESA node (which requires direct NVMe across the capacity tier) should not be on this chassis. If you need more than four LFF bays, move to the 2U \u003ca href=\"\/products\/dell-poweredge-r760xs-8-bay-build-your-own\"\u003eR760xs\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBottom line:\u003c\/strong\u003e this is the capacity-tier 16th-gen 1U cost-optimized node. Specify RAID 6 on an H755 or H965i for parity arrays, BOSS-N1 for boot, and 600W Platinum PSUs, which are right-sized for the workload. Do not try to make it an all-flash chassis; the SFF companions are cheaper per terabyte of flash and provide native NVMe.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eHonest Limitations\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSAS\/SATA-only front backplane.\u003c\/strong\u003e No native NVMe on the four front bays. NVMe on this chassis is available only through the optional rear 2x 2.5\" drive kit, at the cost of one PCIe slot.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFour bays is the ceiling.\u003c\/strong\u003e The 4-Bay LFF cannot be expanded to more front LFF bays. For higher LFF density, the next step is the 2U R760xs with 8 or 12 LFF bays.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAll R660xs platform limits apply.\u003c\/strong\u003e The roughly 1.5 TB memory ceiling, the approximately 225W CPU TDP ceiling, no GPU support, no direct liquid cooling, and cold-swap BOSS-N1 boot all carry over. The primary \u003ca href=\"\/products\/dell-poweredge-r660xs-10-bay-build-your-own\"\u003eR660xs 10-Bay page\u003c\/a\u003e carries the full platform-limits discussion.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLFF SSDs are poor value.\u003c\/strong\u003e 3.5\" SATA SSDs exist but cost more per terabyte than 2.5\" SATA SSDs in the SFF companions. If the build is all-flash, the SFF chassis is the right pick.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRebuild risk on large arrays.\u003c\/strong\u003e A 24 TB drive can take 24-36 hours to rebuild under load. RAID 6 is required at this drive size, and a hot spare is strongly advised.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpinning disk has a real failure rate.\u003c\/strong\u003e Enterprise SAS HDD annualized failure rates run 1-3%. Hot-spare capacity and prompt replacement are part of operating these arrays, not optional extras.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eWorkload Fit\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eR660xs 4-Bay LFF is right for\u003c\/th\u003e\n\u003cth\u003eConsider alternatives for\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackup targets (Veeam, Commvault, Rubrik)\u003c\/td\u003e\n\u003ctd\u003eNVMe-backed databases (R660xs 10-Bay)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFile servers with a moderate user count\u003c\/td\u003e\n\u003ctd\u003evSAN ESA nodes (R660xs 10-Bay)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLog aggregation and SIEM data tiers\u003c\/td\u003e\n\u003ctd\u003eIOPS-bound workloads (any SFF SSD chassis)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eArchive nodes with cold data\u003c\/td\u003e\n\u003ctd\u003eMore than four drives needed (R760xs 2U)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEdge capacity sites (600W PSU, current platform)\u003c\/td\u003e\n\u003ctd\u003eGPU or heavy-compute workloads (R660 or R760)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFederal and compliance bulk storage (Silicon Root of Trust)\u003c\/td\u003e\n\u003ctd\u003eBudget-primary builds that can use 15th gen (R650xs 4-Bay)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch2\u003eWhere to Look Instead\u003c\/h2\u003e\n\u003cp\u003eThe 4-Bay LFF sits at the capacity end of the R660xs range. Where it is not the right fit, these are the destinations:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompute-primary, SFF bays:\u003c\/strong\u003e the \u003ca href=\"\/products\/dell-poweredge-r660xs-8-bay-build-your-own\"\u003eR660xs 8-Bay 2.5\"\u003c\/a\u003e is the SFF companion for builds that lead with compute and want native NVMe.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDense NVMe and the full platform reference:\u003c\/strong\u003e the \u003ca href=\"\/products\/dell-poweredge-r660xs-10-bay-build-your-own\"\u003eR660xs 10-Bay 2.5\"\u003c\/a\u003e is the primary R660xs page, with the most front bays and the full shared-platform discussion.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull dual-socket (more memory, GPU, liquid cooling):\u003c\/strong\u003e the \u003ca href=\"\/products\/dell-poweredge-r660-10-bay-build-your-own\"\u003eR660 10-Bay\u003c\/a\u003e is the full-fat 1U with the 32-slot memory topology, higher TDP headroom, GPU options, and DLC. There is no R660 4-Bay LFF; LFF on the 16th-gen 1U line is xs-only.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMore LFF bays in 2U:\u003c\/strong\u003e the \u003ca href=\"\/products\/dell-poweredge-r760xs-8-bay-build-your-own\"\u003eR760xs (2U)\u003c\/a\u003e takes 8 or 12 LFF bays when one node needs more than four spindles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLower-cost previous generation:\u003c\/strong\u003e the \u003ca href=\"\/products\/poweredge-r650xs-4-bay-3-5-build-your-own\"\u003eR650xs 4-Bay 3.5\"\u003c\/a\u003e is the 15th-gen (Ice Lake, DDR4, PCIe Gen4) predecessor. For capacity tiers that do not need DDR5 or the 16th-gen security baseline, it is typically 30-45% lower per unit on refurbished stock.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe HPE counterpart to the R660xs line is the ProLiant DL360 Gen11; we do not currently stock it, so we reference it by name rather than linking. If a Gen11 cross-shop is part of your evaluation, ask and we will walk through the comparison.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eReady to Configure?\u003c\/h2\u003e\n\u003cp\u003eTell us the CPU generation (4th or 5th Gen), memory capacity, drive count and size (3.5\" SAS or SATA HDDs are the usual pick here), whether you want the rear NVMe kit and can spare the PCIe slot, boot configuration, networking speed, and quantity. Sizing a backup target is part of the conversation: share your retention window, source data volume, and backup software, and we will spec the drive count, RAID layout, and hot-spare allowance.\u003c\/p\u003e\n\u003cp\u003eCall 1-800-778-1545 or \u003ca href=\"\/pages\/quote-cart\"\u003erequest a quote\u003c\/a\u003e and we respond within 24 hours; you can also reach us through the \u003ca href=\"\/pages\/contact\"\u003econtact page\u003c\/a\u003e. Every server ships after a 12+ hour burn-in, carries our 180-day warranty, and qualifies for volume pricing at 5 units and above.\u003c\/p\u003e","brand":"Dell","offers":[{"title":"Default Title","offer_id":45951541018823,"sku":"BP-017000","price":8694.87,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0748\/4493\/0247\/files\/server-design-lab-dell-poweredge-r660xs-4-bay-35-drives-8452558.png?v=1765540027"}],"url":"https:\/\/wholesaleservers.com\/collections\/dell-poweredge-r660xs-servers.oembed","provider":"Wholesale Servers","version":"1.0","type":"link"}