Dell PowerEdge R450 4-Bay 3.5"
Configure Your System:
1 Processor Required
Step 1: Choose a tier
Xeon Silver (4300 series) is the value tier, and on the R450 it is a legitimate first choice rather than a compromise: this chassis exists to be the sensible 1U, and Silver compute covers web, application, and general infrastructure duty honestly.
Xeon Gold (5300 and 6300 series) is the step up for real virtualization density and heavier applications: more cores, higher clocks, and faster memory support. When this server is a serious hypervisor rather than a utility node, Gold is our recommendation.
Whichever tier you pick, populate both sockets; half the memory channels and PCIe lanes route through the second CPU.
Step 2: Choose your CPU
Running Windows Server? Two 8-core CPUs land exactly on the 16-core base license, and our pick is the Gold 6334 (8 cores, 3.6 GHz) when clocks matter, or the Silver 4309Y (8 cores) for honest general duty at the lowest cost; either way the license covers the pair with nothing wasted.
Virtualizing on vSphere? VMware licenses a 16-core minimum per socket, so the 8-core strategy buys you nothing there; take 16-core parts and use every core you are paying to license.
General consolidation lands in the middle of the range. And if your spec sheet keeps climbing, the R650 carries the top of this platform; we will tell you honestly which chassis your workload wants at 1-800-778-1545.
2 Heat Sink Optional
What still matters in a 1U chassis is airflow discipline, because there is no spare vertical space to forgive mistakes. Keep every drive bay blank and internal shroud installed; the R450 cools front to back through small high-speed fans, and an open path lets air skip the components that need it.
Give it real datacenter intake air where you can; it will run in a well-ventilated closet, but a 1U under load is not quiet company, and fan and drive life is better in a cold aisle. If your plans include accelerator cards or unusually warm environments, call 1-800-778-1545 before checkout and we will confirm the thermal picture.
3 Memory (RAM) 16 DIMM slots, modules added in sets of 2 Required
What it means in practice:
Full population is full bandwidth. Sixteen matched DIMMs engages every channel once, and that is our default and the natural build for this chassis. The configurator pairs DIMM speeds with what your processor supports.
Below sixteen, populate in multiples of eight and keep both sockets even; a lopsided population starves channels you paid for.
Size for the future, honestly. Sixteen slots is also the ceiling, so growth on this chassis means swapping DIMMs for bigger ones rather than adding sticks. Buy the capacity target as one matched set now; a year from now, matching rank and speed against installed DIMMs is a maintenance-window project you can avoid today.
Common landing spots: 64 GB (8x 8 GB) for utility duty on a single-purpose box, 128 GB (16x 8 GB) for general duty at full bandwidth, 256 GB (16x 16 GB) is our default for a virtualization host, and 512 GB (16x 32 GB) when the workload demands it.
4 RAID Controllers Optional
PERC H345 is the default, and it is the right controller for a light build: a boot mirror and a simple volume, with modest write load, which describes a lot of R450 duty. No cache, simple RAID levels, lowest cost.
PERC H745 (4 GB battery-backed cache) is our pick the moment the local array matters: virtualization datastores, databases, or a ten-bay backplane doing real work. The cache is the difference between an array that performs and one that merely functions.
PERC H755 (8 GB cache) covers write-heavy duty on a loaded chassis, and PERC H355 sits between H345 and H745 for simple mirror duty.
Building vSAN, Ceph, ZFS, or another software-defined stack? Those want direct drive access through an HBA rather than a RAID controller; call 1-800-778-1545 and we will spec the HBA355 for that build.
Array guidance regardless of controller: RAID 10 where write latency matters, RAID 6 over RAID 5 on large spinning drives, and a hot spare on any array whose rebuild you would rather not race.
5 Storage Drives Select up to 4 drives (0/4 Slots Used) Optional
The 3.5" R450 is the compact capacity play. Large NL-SAS and SATA spinning drives deliver cost per terabyte no SSD matches, and four of them make a serious backup target, file server, or archive node in one rack unit. 2.5" drives fit these bays in adapters where a fast volume is needed, and a mixed build, an SSD pair and a spinning pair, covers a lot of real workloads.
Buy new. We steer you away from refurbished on drives specifically, and we say that as a company that sells refurbished servers all day. Rebuilds on large drives run long, and a rebuild is exactly when you do not want a second drive with unknown hours in the array.
With four bays, the sensible layouts are short: RAID 10 across all four for performance with redundancy, RAID 6 across all four for capacity that survives two failures, or two mirrored pairs. On big drives, skip RAID 5; it does not survive a rebuild failure, and big drives make rebuilds long.
Boot the right way: the BOSS card in the Add-Ons step carries a mirrored M.2 pair dedicated to the operating system, keeping all four large bays for data. On a four-bay chassis, not spending bays on boot is worth real money.
6 Remote Access Required
The dividing line is the remote console. iDRAC9 Enterprise gives you remote KVM and virtual media through a clean HTML5 interface: reach the server's screen, mount an ISO, and rebuild an OS from anywhere, even when the operating system is down. The lower tiers leave you walking to the rack for any problem below the OS.
Enterprise is the configurator default and our pick. R450s tend to deploy in multiples and in far-away racks, web nodes and branch boxes nobody visits on a schedule, and the license costs a fraction of one site trip.
The honest exception: if this server is physically reachable by whoever manages it and walking to the closet is genuinely not a hardship, the savings are real.
Enterprise also brings automated firmware updates, telemetry streaming, and secure erase for the day the server retires holding company data.
If you are deploying 5 or more units, take Enterprise on all of them. Fleet management without remote console access does not work in practice.
7 Power Supply 2x included in build Required
2x 600W is the configurator default and covers most R450 builds outright: value-tier processors, a sensible memory load, and a bay of SSDs land comfortably inside it.
2x 800W is our pick when the build fills out: higher-TDP Gold silicon, a full backplane, or all sixteen DIMM slots loaded. The price step is small and it buys the 50 percent load target, where a PSU runs at peak efficiency, runs cooler, and lasts longer than one working near its limit.
2x 1400W is rarely necessary on this chassis and exists for the heaviest corner cases; if your build genuinely reaches for it, that is worth a conversation about whether the R650 fits better.
Watch the estimated TDP counter at the bottom of the page as you add components to see where your build lands, and when it sits between two tiers, size up; the price difference is a rounding error against the efficiency and headroom you get back.
8 Network Cards Required
Quad 1 GbE covers utility and light application duty honestly, and it is the budget answer when the clients are desktops on gigabit switching.
10 Gb is the floor the moment this server hosts a busy hypervisor, mounts shared storage, or moves backup traffic on a deadline. The dual and quad 10 Gb options cover those builds; production on the fast ports, management on the slow ones.
Then port type, and this is the one that catches people. SFP+ ports take fiber or DAC cables and talk to datacenter-grade switches. BASE-T ports are 10 Gb copper on ordinary RJ45. Neither is better; they must simply match your switch. Order SFP against a copper-only switch and the server racks up with nothing to plug into.
Need more ports, or separate links for storage and VM traffic? PCIe network cards stack on top of whatever you choose here. Call 1-800-778-1545 and we will spec the whole path, switch ports included.
9 Operating System Required
The good news on this platform: the R450 is current enough that every modern OS supports it fully, so the choice is about your environment, not compatibility.
Windows Server 2022 is the mainstream pick, and Windows Server 2025 is fully supported here if you want the newest platform. Licensing is per core with a 16-core base, which is why our processor guidance steers Windows buyers to two 8-core CPUs: the 16-Core license covers that build exactly. On CALs, count your users and round up.
Fair warning on Evaluation Editions: free and fully functional for 180 days, then they expire. Right for labs and proof-of-concept, wrong for production.
VMware ESXi is fully supported on this platform for shops standing on vSphere; we will install the version your cluster runs.
Proxmox VE is our quiet favorite for new virtualization deployments: open-source KVM with clustering and live migration, no per-core license math, and a few R450s running it make one of the best value clusters money buys today.
Ubuntu Server LTS covers Linux web and application duty with five years of free updates, and it is the natural fit for what many R450s end up doing. No OS is there for teams imaging from their own deployment infrastructure.
Not sure which fits? Tell us the workload at quote time, or call 1-800-778-1545.
WServer Warranty
Dell PowerEdge R450 4-Bay 3.5" Drives [15th Gen] Detailed Review
The Dell PowerEdge R450 4-Bay 3.5" is the LFF capacity variant of Dell's 15th generation value 1U rack platform: four large-form-factor SAS/SATA hot-plug bays, one or two 3rd Generation Intel Xeon Scalable processors (Ice Lake-SP, socket LGA 4189), up to sixteen DDR4-3200 RDIMM slots, and PCIe Gen4 throughout. Every unit is Refurbished, tested, and built to order. This is the R450 you choose when the workload wants bulk SAS/SATA capacity in the smallest current-generation Dell rack chassis rather than SFF spindle count.
The platform fundamentals are identical across all three R450 chassis variants; this page covers the 4-Bay LFF specifics, and the primary R450 platform write-up lives on the R450 8-Bay 2.5" page. The R450 is the value cut of Dell's 15th gen dual-socket line, the direct successor to the 14th gen R440 4-Bay 3.5", and it sits below the mid-range R650 and the 2U R550. These units are also available as Surplus New where stock allows, which is genuinely unused excess inventory priced below Dell-direct new and covered by the same Wholesale Servers warranty and burn-in path as our refurbished builds.
To spec a build, call 1-800-778-1545 or use the quote form on this page; we respond within 24 hours. Every Wholesale Servers R450 ships after a 12+ hour burn-in across every memory channel, PCIe slot, and drive bay, backed by the standard 180-day warranty. Volume pricing applies at 5 units and above, and the 4-Bay LFF is a common pick for branch-office and edge rollouts at quantity.
When 4 LFF Bays Are the Right Choice
The 4-Bay 3.5" is the LFF capacity variant of the R450. Four large-form-factor bays in 1U is a deliberately focused profile, and it is the right pick in specific cases:
- Capacity-per-chassis beats spindle count. Four 3.5" bays take nearline SAS to 24 TB per drive, far more raw capacity than the 2.5" SFF variants reach. For a branch-office NAS head, a backup target, or an edge node holding bulk local data, LFF capacity in 1U is exactly the point.
- 1U is a hard constraint. Rack-space-constrained edge cabinets, branch-office IT closets, and telco shelves where a 2U box does not fit but the storage requirement still fits in four LFF bays.
- Lowest acquisition cost in the family. Four bays and an LFF backplane is the most cost-efficient R450 when the extra SFF bays of the 8-Bay 2.5" or 10-Bay 2.5" would sit unused.
If the workload wants spindle count or IOPS density instead of bulk capacity, the SFF variants are the better pick; if it needs more than four LFF bays, a 2U platform is the answer (covered below).
Storage - 4 LFF Bays
Four front-accessible 3.5" LFF hot-plug bays, SAS or SATA. NVMe is not supported on the R450 front backplane; the chassis has no NVMe backplane option in Dell's catalog, and that is an architectural limit rather than a configuration choice. Front-bay NVMe belongs on the R650 or R750.
Practical capacity at four LFF bays:
- Four 20 TB nearline SAS HDDs: 80 TB raw. RAID 6 leaves two parity drives (40 TB usable), workable for backup and archival, though at four bays a single drive failure is a large fraction of the array.
- Four 24 TB nearline SAS HDDs: 96 TB raw, about 48 TB usable at RAID 6. The current LFF NL-SAS ceiling here.
- Four 8 TB SAS SSDs: 32 TB raw. RAID 10 (two mirror pairs, 16 TB usable) for write-intensive data; RAID 5 (24 TB usable) for read-balanced.
- Mixed: 2x SAS SSD (RAID 1 hot tier) plus 2x NL-SAS (RAID 1 capacity tier), a common four-bay layout for branch-office multi-role hosts.
Four bays is genuinely capacity-constrained. If the workload needs more LFF spindles, step to the 2U R550 8-Bay 3.5" (8 LFF, value tier) or the R750 12-Bay 3.5" (12 LFF, flagship). Boot is handled off the front bays by a BOSS-S2 card: two M.2 SATA SSDs in hardware RAID 1, so all four LFF bays stay available for data. We stock the matching R450 BOSS-S2 card with 2x 240 GB M.2 (a 2x 480 GB option is also available).
Storage Controllers
The R450 runs Dell's PERC 11 controller family, the same options across all three chassis variants:
- PERC H755 - 8 GB flash-backed write cache, full RAID 0/1/5/6/10. The production default on a four-bay LFF array running parity-protected capacity, and what we quote unless the deployment says otherwise.
- PERC H745 - cached RAID with 0/1/5/6/10 support, a step below the H755 for mixed workloads that still need parity RAID.
- PERC H355 - entry-tier hardware RAID, RAID 0/1/10 only. The H355 does not do RAID 5 or RAID 6; parity RAID needs the H745 or H755. A cost-reduced choice for a simple two-pair mirror layout.
- PERC H345 - the lowest-tier hardware RAID option, RAID 0/1/10.
- HBA355i - SAS-3 pass-through host bus adapter, no hardware RAID, for software-defined storage.
- S150 - chipset software RAID. Boot or light workloads only; not a production data recommendation.
Processors
The 4-Bay shares the R450 compute platform in full: one or two 3rd Generation Intel Xeon Scalable processors (Ice Lake-SP, socket LGA 4189). Because the LFF variant is storage-led, it is very commonly run single-socket; both are supported. The SKU stack caps at 24 cores per socket (the value-tier ceiling shared with the R550), with no 32-core or 40-core Platinum parts and a tighter 1U TDP envelope than the 2U platforms. Configurations we recommend:
- Xeon Silver 4309Y (8C, 2.8 GHz, 105W). The standard single-socket build for branch-office and edge hosts under 16 cores. Cool and quiet in the 1U chassis.
- Xeon Silver 4314 (16C, 2.4 GHz, 135W). Standard dual-socket value build, 32 cores and 64 threads.
- Xeon Gold 6312U (24C, 2.4 GHz, 185W). The dense single-socket option (the U suffix denotes a single-socket-only SKU), 24 cores in 1U.
- Xeon Gold 6326 (16C, 2.9 GHz, 185W). Higher per-core frequency for licensing-bound dual-socket workloads.
Ice Lake-SP brings eight memory channels per socket (up from six on the 14th gen R440), PCIe Gen4, and the Sunny Cove IPC uplift. On a storage-led 1U box the wider memory bandwidth helps the file and backup workloads this chassis usually runs.
Memory
Sixteen DDR4 DIMM slots: eight per processor, one DIMM per channel. A single-socket build populates eight slots; a dual-socket build uses all sixteen. The R450 is registered-ECC RDIMM only. It does not support LRDIMM or Intel Optane Persistent Memory; those belong to the mid-range R650 and R750 within the 15th gen line.
- Single-socket ceiling: 512 GB (8x 64 GB dual-rank RDIMM).
- Dual-socket ceiling: 1 TB (16x 64 GB dual-rank RDIMM).
- Common builds: 64 GB, 128 GB single-socket (all channels filled), 256 GB dual-socket. Most 4-Bay LFF deployments sit well under the 1 TB ceiling; the chassis is storage-led, not memory-led.
Speed runs at DDR4-3200 with one DIMM per channel and a 3200-capable CPU; lower Silver SKUs cap the bus at 2933 per Intel's platform rules. The CPU sets the memory speed, not the DIMM. If a workload needs more than 1 TB or persistent memory in 1U, that is the R650.
Networking and PCIe Expansion
Networking attaches through an OCP NIC 3.0 slot, which does not consume a PCIe expansion slot, so it is the production NIC home on the R450. Embedded networking is 2x 1 GbE LOM (Broadcom 5720 class) for management and low-bandwidth use. The R450 uses OCP NIC 3.0, not the rack Network Daughter Card of the 13th and 14th gen platforms.
Common OCP 3.0 attaches: 2x 10 GbE SFP+ (Intel X710) for branch-office and edge; 2x 25 GbE SFP28 (Mellanox ConnectX-5 or Intel E810) for scale-out fabrics; 4x 1 GbE Base-T for management-grade networking.
PCIe expansion is Gen4 and riser-dependent: plan on roughly two usable low-profile slots (up to three on some risers), with the upper slot gated by the second processor. A SAN-attach build (for example dual 32G Fibre Channel HBAs) consumes the PCIe slots and a dual-socket configuration. If the deployment needs more than a couple of add-in cards plus the OCP NIC, the 2U R550 (wider riser budget) is the right platform.
GPU Support
The R450 is not a GPU platform. The 1U value chassis has no double-width slot, no supplemental GPU power, and a thermal and lane budget built for NICs and HBAs rather than accelerators, and the LFF variant in particular is built around storage, not compute acceleration. For inference or training that needs a GPU, step to the 2U Dell PowerEdge R750, the same-generation Ice Lake platform engineered for double-width accelerators. GPU work belongs there, not on this chassis.
Management - iDRAC9 Generation
The R450 ships with iDRAC9, the management controller across Dell's 15th gen line (15th and 16th gen both run iDRAC9; iDRAC10 is a later-generation controller, not this platform). We build R450 units with iDRAC9 Enterprise unless asked otherwise, because the 4-Bay LFF is exactly the kind of box that lands in a remote branch: virtual console and virtual media turn a multi-day on-site trip into a remote fix. Enterprise enables full virtual console redirection, virtual media, and complete SNMP and Redfish API coverage; Lifecycle Controller handles firmware and driver management on-box. The 15th gen security baseline includes Silicon Root of Trust, signed firmware, Secure Boot, BIOS lockdown, and TPM 2.0, with OpenManage Enterprise and Ansible integration across the family.
Power and Cooling
The R450 takes up to two hot-plug power supplies in a 1+1 redundant pair. Available tiers (we confirm the exact wattage against the build):
| PSU | Efficiency | Typical fit |
|---|---|---|
| 600W AC | Platinum | Single-socket Silver, baseline memory, four LFF drives. The common single-socket spec. |
| 800W AC | Platinum | Dual-socket Silver, 128 to 256 GB RAM, four LFF drives, 10 GbE OCP. The standard dual-socket spec. |
| 1100W AC | Platinum / Titanium | High-TDP dual-socket (Gold 6326, Gold 6312U), denser networking, or sustained high-utilization profiles. |
Cooling is air only, front-to-rear, standard 19-inch rack. The 1U envelope is tight: high-TDP dual-socket builds reduce ASHRAE margin and raise fan output. Standard configurations support ASHRAE A2 (10C to 35C); extended-ambient classes are supported with CPU TDP and configuration restrictions, which we verify against Dell's thermal tables for edge or non-conditioned deployments.
Physical Specs and Platform Notes
- Form factor: 1U rack, full-depth chassis, front-to-rear airflow, ReadyRails sliding rail support, four 3.5" LFF front bays. Dell regulatory model E76S.
- PCIe expansion: Gen4, riser-dependent, roughly two low-profile slots with the upper slot tied to CPU 2, plus the dedicated OCP NIC 3.0 slot and the dedicated BOSS and PERC positions.
- Parts availability: Strong. The 15th gen platform is current-production at Dell, so PERC 11 controllers, OCP 3.0 NICs, Ice Lake CPUs, DDR4-3200 RDIMMs, LFF carriers, and BOSS-S2 cards are readily sourced new and refurbished.
- Accessories we recommend: the BOSS-S2 boot card (2x M.2 SATA) on every production build, and the A11 drop-in sliding rail kit that fits the R440, R450, and R650 chassis.
- Platform notes: LFF SAS/SATA front bays only (no NVMe backplane); RDIMM-only memory (no LRDIMM or Optane); 24-core-per-socket SKU ceiling; small PCIe budget. These are the value-tier design points that keep the R450 priced below the R650, not faults.
Our Assessment
Where it excels: The R450 4-Bay 3.5" is the right call for 1U deployments that need modest bulk LFF capacity: branch-office file servers and NAS heads under about 50 TB usable, edge nodes holding bulk local data, remote backup targets that must fit in 1U, and small-business consolidated hosts running Active Directory, file shares, and a couple of application VMs. When 1U form factor and LFF capacity are both requirements, this is the chassis.
Where to look instead: If the workload wants SFF spindle count or IOPS density, the R450 8-Bay 2.5" or 10-Bay 2.5" are the better picks. If it needs more than four LFF bays, step to the 2U R550 8-Bay 3.5" (value tier) or R750 12-Bay 3.5" (flagship). If it needs front-bay NVMe, more than 1 TB of memory, or more than a couple of PCIe slots, the mid-range R650 is the platform. We will quote the alternative alongside when the decision is borderline.
Bottom line: Buy the R450 4-Bay 3.5" when the deployment is a 1U branch-office or edge host and the storage requirement is bulk capacity that fits in four LFF bays. The typical buyer is rolling out remote-site or small-business infrastructure, wants current-generation Ice Lake and iDRAC9 in the smallest Dell rack chassis, and values capacity-per-chassis over spindle count. For that buyer this is the cost-correct R450.
Honest Limitations
- Four bays is genuinely capacity-limited. RAID 6 leaves two data drives, RAID 5 leaves three, RAID 10 leaves two mirror pairs. Larger arrays need a 2U platform.
- No front-bay NVMe at any drive count. SAS/SATA only; NVMe needs the R650 or R750.
- RDIMM only, 1 TB ceiling. No LRDIMM, no Optane.
- 24 cores per socket maximum, the value-tier SKU cap.
- Small PCIe budget, roughly two low-profile Gen4 slots.
- No GPU support. This is not an accelerator platform.
Workload Fit
| R450 4-Bay 3.5" is right for | Consider alternatives for |
|---|---|
| Branch-office 1U file server or NAS head (under ~50 TB usable) | More than four LFF bays (R550 8-Bay 3.5", R750 12-Bay 3.5") |
| Edge nodes with bulk LFF local storage | SFF spindle count or IOPS density (R450 8-Bay 2.5", 10-Bay 2.5") |
| Remote backup targets in 1U form factor | Front-bay NVMe required (R650, R750) |
| Small-business consolidated hosts (AD, file, app VMs) | Memory above 1 TB dual-socket (R650, R750) |
| Telco edge and shallow-rack 1U LFF deployments | More than two PCIe slots (R550, R650) |
| Cost-led 1U capacity builds | GPU compute (R750) |
Where to Look Instead
- SFF spindle count in the same chassis: Dell PowerEdge R450 8-Bay 2.5" (the primary R450 page) or the R450 10-Bay 2.5" for maximum SFF density.
- More LFF bays at the same value tier: Dell PowerEdge R550 8-Bay 3.5" (2U).
- Flagship LFF capacity: Dell PowerEdge R750 12-Bay 3.5" (2U).
- Mid-range 1U step-up (NVMe option, more memory): Dell PowerEdge R650 4-Bay 3.5".
- Prior-generation budget pick: Dell PowerEdge R440 4-Bay 3.5", 14th gen Cascade Lake.
The cross-vendor counterpart is the HPE ProLiant DL360 Gen11 (1U value dual-socket); we can advise on that comparison even when quoting the Dell.
Ready to Configure?
Tell us the workload, single- or dual-socket, your memory and storage targets, your CPU preference (or just the workload so we can recommend), your storage mode (hardware RAID on the PERC H755, or pass-through on the HBA355i for software-defined storage), your network attach (10 or 25 GbE), and quantity. We respond within 24 hours. Volume pricing applies at 5 units and above, and the 4-Bay LFF is commonly bought in quantity for branch-office and edge rollouts, so tell us the target size and we will work the breaks into the quote. Every Wholesale Servers Dell PowerEdge R450 ships after a 12+ hour burn-in covering every memory channel, PCIe slot, and drive bay, with the standard 180-day warranty included and 1-Year, 2-Year, and 3-Year Premium options available. Call 1-800-778-1545 or use the quote form on this page. If your sizing pushes against the four-bay capacity, the 1 TB memory ceiling, or the PCIe budget, we will quote the R550 or R650 alongside for direct comparison.
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