The R740xd 12-Bay 3.5" + 2-Bay LFF RFB is the rear-flex-bay companion to the 12-Bay 3.5" reference page. Twelve hot-swap 3.5" front bays plus two additional 3.5" hot-swap bays at the rear, for fourteen LFF total in a single 2U chassis. The Intel Purley dual-socket compute platform is identical to the 12-Bay 3.5" reference page; what is genuinely different is the architectural tradeoff at the rear of the chassis: the rear bays consume riser slot 3, which drops effective PCIe slot count and forecloses the mid-bay expansion option in exchange for two rear-accessible hot-swap bays.

The buyer who picks this variant has usually thought through what those two extra bays are for. The three patterns we see most often are: (1) two rear bays as dedicated global hot-spares for the 12-drive front array (RAID 6 + 2 spares is a more resilient unattended configuration than RAID 6 alone), (2) two rear bays for an OS mirror with the front bays reserved for workload storage (when BOSS-S1 capacity is insufficient or the workload wants OS on hot-swap rotating media for some operational reason), or (3) two extra bays of front-array capacity for a 14-drive RAID 60 (less common because wider arrays carry rebuild-window penalties). The When 14 LFF Is the Right Choice section below covers the decision tree.

To configure a build, call 1-800-778-1545 for our account team. Every R740xd we ship runs through a 12+ hour burn-in across every memory channel, every PCIe slot, and every drive bay including the rear flex bay positions; the burn-in includes full surface scan and SMART validation on every drive bay before shipment. Every unit ships with a 180-day standard warranty and 1-Year, 2-Year, and 3-Year Premium options at quote time. Volume pricing applies at 5 units and above; tell us your workload and how you plan to use the rear bays and we will put together the right BOM or steer you to the 12-Bay 3.5" reference variant if the rear-bay justification is not strong.

When 14 LFF Is the Right Choice

The + 2-Bay LFF RFB earns its place in the R740xd family on one specific pattern: 14 LFF in a single 2U chassis with rear-accessible hot-swap on the additional pair. It is the right call when the design needs in-chassis hot-spare capacity or a physically separated OS tier on rotating media. It is not the right call when the additional bays are wanted simply for raw capacity, because the standard 12-Bay 3.5" with mid-bay expansion gives 16 LFF total without the PCIe slot penalty.

Pick the + 2-Bay LFF RFB when:

• You specifically want in-chassis hot-spare capacity. The 12-drive front array as RAID 6 plus 2 dedicated rear hot-spares is a textbook resilient configuration for unattended backup-target deployments.
• You need to separate OS storage from workload storage on physically distinct hot-swap bays. Less common than BOSS-S1 boot, but useful when OS capacity exceeds the BOSS M.2 form factor or operational requirements demand it.
• You are running Ceph OSD nodes where the rear pair hosts the OS mirror and the front 12 bays host the OSDs. This is a clean physical separation for SDS deployments.
• You can accept reduced PCIe slot count (roughly 6 effective slots instead of 8) and you are not using mid-bay expansion.

Pick the 12-Bay 3.5" reference variant when:

• You want full PCIe slot count for additional HBAs, networking adapters, or expansion cards
• You want mid-bay expansion (4 additional LFF or SFF bays in the chassis, mid-bay and rear-bay are mutually exclusive)
• Hot-spares can live as cold-spares on the shelf rather than dedicated chassis bays
• 12 LFF is sufficient for the workload

Pick external SAS expansion (PERC H840 + Dell MD1400 / MD1420 JBOD) when you need more than 18 LFF total (the R740xd chassis ceiling with mid-bay + rear-bay), or when you want centralized RAID management across multiple chassis worth of drives.

Storage - 12x Front + 2x Rear 3.5" LFF Bays

Twelve hot-swap 3.5" SAS/SATA front bays on the same direct-attach LFF backplane as the reference variant, plus two additional 3.5" hot-swap bays at the rear. The rear bay assembly is hot-swap accessible from behind the rack and connects through dedicated SAS cabling that routes across the chassis top and consumes riser slot 3. The rear bays present to the OS as additional drive slots on the same PERC or HBA, not as a separate controller; they appear in the controller's drive enumeration alongside the front bays.

Cabling architecture: The rear-bay SAS cables route across the chassis top and connect to the main backplane SAS expansion. This routing consumes physical space that would otherwise be available for mid-bay cabling, which is why mid-bay and rear-bay are mutually exclusive on this chassis. The architectural decision is locked at order time; field conversion from one to the other requires chassis disassembly.

Rear bay service access: Hot-swap drive replacement on the rear bays requires rear-rack access with enough clearance to fully extract the drive caddy. If the rack rear has constrained clearance (deep cable bundles, blanking panels right behind the chassis, or short rack depth), accessing the rear bays for drive swap requires temporarily relocating cable bundles. Cable management arm installation is strongly recommended on this variant to keep cabling out of the rear-bay service path.

Drive options we quote:

• NL-SAS 7.2K: 12 TB, 14 TB, 16 TB, 18 TB, 20 TB. The volume capacity sweet spot on the refurbished market in 2026 is 16 TB. RAID 6 mandatory above four drives. A 16 TB NL-SAS rebuild on a degraded RAID 6 takes 24 to 36 hours under load.
• Enterprise SATA HDD: 8 TB, 12 TB. Acceptable for backup targets and cold archive. NL-SAS is the correct spec for 24/7 production.
• 3.5" SAS SSD: Rare on the secondary market. If you need LFF flash, 2.5" SSDs in a 3.5"-to-2.5" caddy adapter is the volume play, though the 24-Bay 2.5" companion variants are usually cleaner for flash-heavy deployments.

RAID guidance: RAID 6 is the floor on any NL-SAS array above four drives. RAID 5 is unsafe on large-capacity LFF; we configure RAID 6 or RAID 60 only on spinning disk above 4 TB per drive. The 12-bay front array as RAID 6 with the 2 rear bays as global hot-spares is the textbook configuration on this variant; the controller can rebuild onto a hot-spare automatically and shorten the at-risk window after a drive failure. If you choose to run 14 drives as a single wide RAID 60 instead, plan for the longer rebuild window that scales with array width.

Spin-up current at scale on multi-unit LFF deployments: Fourteen LFF spindles spinning up simultaneously can exceed steady-state draw by 30 to 40 percent for 30 to 60 seconds on a cold boot. The PSU floor on this variant is 1100W Platinum, not 750W, because of the two additional drives. See the Power and Cooling section for the full sizing table. Multi-chassis deployments on the same PDU should coordinate boot sequencing to avoid simultaneous cold-boot surge on the upstream breaker.

NVMe note: The + RFB variant inherits the LFF chassis's no-front-NVMe limitation. The rear bays are SAS/SATA only. For NVMe, use the R740xd 24-Bay 2.5" NVMe companion.

Boot: BOSS-S1 (Boot Optimized Storage Solution, dual mirrored M.2 SATA SSDs on a dedicated PCIe card, hardware RAID 1, cold-swap). Standard 14th gen boot device. We add it to every R740xd BOM by default. If the deployment is using the rear bays for OS storage instead of BOSS, we will say so on the BOM explicitly and the customer makes the call; otherwise reserve the rear bays for hot-spares or additional capacity.

Storage Controllers

The full 14th gen PERC family is available on this chassis via the Mini-PERC slot, identical to the 12-Bay 3.5" reference variant. Controller selection is workload-driven; the rear-bay assembly does not change the controller story.

PERC H740P (8 GB NV cache, battery-backed): Our production storage default. The 8 GB non-volatile cache and battery backing survive a power event without UPS dependency. For backup-target, file-server, and Ceph OSD workloads on this chassis, the H740P is the right call. The hot-spare assignment for the 2 rear bays is configured through H740P's controller management at deployment time.

PERC H730P (2 GB cache, battery-backed): General-purpose choice for mixed or read-heavy workloads where 8 GB of cache is over-spec. Lower price point. For backup-target workloads where most writes are sequential, H730P is often acceptable.

PERC H730 (1 GB cache, battery-backed): 13th-gen carryover via Mini-PERC slot compatibility. Viable on the R740xd but generally a downgrade vs the H730P or H740P on Cascade Lake workloads. We see this controller frequently on the secondary market because 13th-gen-to-14th-gen field upgrades carried it forward rather than replacing it; refurbished units sometimes ship with the H730 already installed. Quote when budget is the hard constraint and write performance is not load-bearing; quote H730P or H740P otherwise. Not a primary recommendation.

PERC H330 (no cache): Entry-tier hardware RAID. Not appropriate for production storage-dense deployments on this chassis. Listed for completeness.

HBA330 (pass-through HBA): Required for software-defined storage stacks (vSAN OSA, Storage Spaces Direct, Ceph, ZFS). For Ceph OSD deployments using the rear pair as OS mirror, the HBA330 is the data-path controller for the front 12 bays and the OS mirror typically runs through software RAID or a separate auxiliary mechanism.

PERC H840 (external): For external SAS enclosure connectivity when scale-out beyond 14 internal bays is needed.

S140 (software RAID via chipset): Dev/test only. Not a production recommendation.

Processors

The R740xd + 2-Bay LFF RFB supports 1st Generation Intel Xeon Scalable (Skylake-SP, 2017) and 2nd Generation Intel Xeon Scalable (Cascade Lake-SP, 2019) in the same LGA 3647 socket. Drop-in compatible. Same V1 / V2 socket compatibility story as the rest of the 14th gen family.

CPU selection on this chassis follows the same logic as the 12-Bay 3.5" reference variant: storage-dense workloads are typically not CPU-bound, so do not over-spec. Our recommendations:

• Gold 6230 (20 cores, 2.1 GHz, 125W TDP): The sweet spot for storage-dense workloads. Forty cores in a dual-socket build covers backup targets, file servers, and Ceph OSD nodes with headroom.
• Silver 4214 (12 cores, 2.2 GHz, 85W TDP): For backup-target deployments where compute is genuinely secondary. Twenty-four cores total is sufficient for Veeam proxy or Commvault MediaAgent duty.
• Gold 6248 (20 cores, 2.5 GHz, 150W TDP): When the chassis doubles as application tier. 150W TDP boundary discussed below.

Heatsink mismatch above 150W is the trap. Any processor above 150W TDP requires the high-performance heatsink. The standard heatsink will thermally throttle under sustained load. The 14-drive thermal load on this chassis is slightly higher than the 12-drive reference variant; confirm heatsink at quote time.

Single-socket disables half the platform. A single-socket build leaves the second CPU's 12 DIMM slots unreachable, half the PCIe lanes unavailable, and the second NDC slot inactive. On this chassis the PCIe budget is already reduced by the rear-bay assembly; single-socket compounds the problem. Almost never the right call.

Storage-dense thermal note: Fourteen-drive configurations run hotter than equivalent twelve-drive configurations because of the additional rear-bay drives. The thermal envelope is unchanged but the headroom is smaller. For Gold 6248 or above, confirm ambient temperature and rack airflow at quote time.

Memory

24 DDR4 DIMM slots: 12 per CPU, 6 channels per CPU, 2 DIMMs per channel. Supports RDIMM up to 128 GB per DIMM, LRDIMM up to 256 GB per DIMM. Maximum capacity 3 TB with 128 GB RDIMMs at 2 DPC, 6 TB with 256 GB LRDIMMs.

Memory speed by population and generation:

• Skylake (V1): DDR4-2666 at 1 DPC, DDR4-2666 at 2 DPC (no penalty for full population)
• Cascade Lake (V2) Gold 6200 / 5222 SKUs: DDR4-2933 at 1 DPC, drops to DDR4-2666 at 2 DPC
• Cascade Lake (V2) other SKUs: DDR4-2666 at any population

RDIMM vs LRDIMM: For most 14-bay storage-dense workloads, RDIMM at 32 GB or 64 GB is the right choice. LRDIMM only becomes the right call when you specifically need 128 GB or higher per DIMM, which is rare on backup-target or capacity-tier SDS workloads.

NVDIMM-N: Up to 12 NVDIMM-N modules (16 GB each, 192 GB total). NVDIMM-N is rarely combined with the rear-bay configuration in practice; the GPU shroud constraint that affects the 24-Bay 2.5" is less relevant here because this chassis does not support GPU regardless. Confirm at quote time if NVDIMM-N is in your spec.

NVMe bifurcation BIOS setting: Not directly relevant on this chassis (no front NVMe, no flex-zone NVMe). Mid-bay NVMe is also not possible on this variant because mid-bay and rear-bay are mutually exclusive. Listed for completeness across the R740xd family.

Workload sizing guidance: Match memory to the workload. Backup target: 96 to 192 GB is honest. File server: 64 to 128 GB. Ceph OSD with OS-on-rear-bay: 192 to 384 GB. Do not spec to chassis ceiling unless the workload justifies it.

Networking and PCIe Expansion

The R740xd uses Dell's Network Daughter Card (NDC) mezzanine standard. The NDC slot is dedicated and does not consume a PCIe slot, which matters more on this chassis than on the reference variant because PCIe slot budget is already reduced by the rear-bay assembly.

NDC port options:

• 4x 1 GbE: Base option. Acceptable for management-network-only. Not recommended for storage-dense workloads.
• 2x 10 GbE + 2x 1 GbE: Pragmatic mixed option for general workloads.
• 4x 10 GbE: Baseline for backup targets. Four ports give bonding flexibility.
• 2x 25 GbE (Mellanox ConnectX-4 Lx): For SDS deployments specifically. Ceph OSD nodes with OS-on-rear-bay are a common 25 GbE deployment on this chassis.

100 GbE: Not available as NDC. If 100 GbE is the requirement, it goes in a PCIe slot, and on this chassis the slot budget is already tighter. ConnectX-5 dual-port is the right card for this platform.

PCIe expansion: Up to 8 PCIe Gen3 slots in the base chassis, dropping to roughly 6 effective slots because riser 3 is consumed by rear-bay cabling. Riser configurations 1A / 1B / 2A / 2B trade slot count and form factor; riser 3 is occupied by the rear-bay assembly on this variant by definition. Confirm your PCIe card list at quote time before locking the chassis configuration.

GPU Support

The honest answer on this variant: no meaningful GPU support. Rear-bay cabling consumes riser 3 and the reduced effective PCIe slot count combined with the bays-vs-GPU architectural conflict means GPUs are not a practical configuration. This is the same outcome as the 12-Bay 3.5" reference variant (the LFF chassis is not a GPU chassis), reinforced on this variant by the rear-bay assembly's consumption of the riser that would otherwise host the third GPU.

If you need GPU on an R740xd-class chassis, the GPU-capable variant is the 24-Bay 2.5" SAS/SATA companion. If you need GPU plus bulk LFF storage in the same chassis, the answer is the T640 tower (4.5U, more permissive GPU envelope) or a dedicated GPU server with external SAS storage via PERC H840.

Management - iDRAC9 Generation

iDRAC9 Enterprise is the production spec. Full remote KVM with HTML5 console, virtual media for ISO mounting, group management via OpenManage Enterprise, Lifecycle Controller for firmware updates without OS involvement, Quick Sync 2 wireless management. Express tier is insufficient for unattended deployment; we spec Enterprise on every R740xd BOM by default. iDRAC9 also exposes the rear-bay drive health metrics in the same enumeration as the front bays, which simplifies fleet-wide health monitoring through OpenManage Enterprise.

Silicon Root of Trust via the Intel platform. TPM 2.0 module supported. Cryptographically signed firmware verification at boot. Meets HIPAA, PCI DSS, CMMC, and federal civilian compliance requirements.

Secure Boot, BIOS recovery, signed firmware updates, and System Erase (full media wipe including drives and SSDs) clear the bar for FedRAMP, DoD, and financial services environments without third-party add-ons. For volume deployments, OpenManage Enterprise handles fleet-wide firmware management, configuration templates, and compliance reporting across all 14 drives on this chassis identically to other R740xd variants.

Power and Cooling

Hot-swap redundant Dell Flex Slot PSUs: 495W, 750W (Platinum and Titanium), 1100W Platinum, 1600W Platinum, 2000W, 2400W. The 14-drive load draws marginally more than the 12-drive reference variant; PSU sizing accounts for the full populated load including rear bays.

Spin-up current at scale on multi-unit LFF deployments is the under-spec'd PSU trap. Fourteen LFF spindles spinning up simultaneously can exceed steady-state draw by 30 to 40 percent for 30 to 60 seconds on a cold boot. The 750W Platinum option is undersized for a 14-drive cold start; 1100W Platinum is our floor recommendation for + RFB configurations. At rack-level, multiple R740xd chassis booting simultaneously after a UPS event or planned maintenance window is one of the most common causes of breaker trips in storage-dense deployments; coordinate boot sequencing if you have more than three or four chassis on the same PDU.

Cooling is the standard 14th gen 2U fan kit, hot-swap fans, N+1 redundancy. Ambient temperature ceiling is 35°C with standard fans. The two rear-bay drives add modest thermal load behind the chassis; ensure rear-rack airflow is not impeded by cable bundles.

Physical Specs & Platform Notes

• Form factor: 2U rack. Approximate dimensions 86.8 mm x 482.0 mm x 715.5 mm (H x W x D) with bezel. Identical chassis envelope to the 12-Bay 3.5" reference page. Rear bays are flush with the rear panel; no additional depth required. Depth fits standard 1000 mm cabinet rails with cable management arm.
• PCIe expansion: Up to 8 PCIe Gen3 slots on the chassis, dropping to roughly 6 effective slots because riser 3 is consumed by rear-bay cabling. Riser configurations 1A / 1B / 2A / 2B available for the remaining risers; riser 3 is occupied by the rear-bay assembly by definition on this variant.
• Parts availability: Excellent through 2030 minimum. The + RFB variant is lower volume than the reference 12-Bay 3.5" but the rear-bay assembly and the underlying chassis parts are abundant on the secondary market. Dell ProSupport channels remain active in 2026; third-party maintenance for 14th gen Dell is mature.
• Accessories we recommend: Dell ReadyRails II sliding rail kit for the R740xd (confirm part number at quote time against your chassis revision and cabinet depth), cable management arm (strongly recommended on this variant for rear-bay service access), Dell LCD bezel for the R740xd 2U chassis (confirm part number at quote time against your chassis revision). The CMA is more important on the + RFB variant than on the reference 12-Bay because rear-bay drive swap requires unobstructed rear-rack access.
• Platform notes: CPU hot-plug is not supported. NVMe bifurcation BIOS setting applies to PCIe-attached NVMe carriers in expansion slots, not to the front or rear bays which are SAS/SATA. Mid-bay and rear-bay are mutually exclusive; pick one architectural direction at order time. Riser configuration is locked at order time. Bay configuration is welded into the chassis; field conversion to a different bay layout requires chassis disassembly.

Our Assessment

Where it excels: Backup-target configurations with in-chassis hot-spare capacity. Twelve-drive RAID 6 plus two dedicated rear hot-spares is a textbook resilient configuration for unattended deployments where automatic rebuild onto a spare matters more than the 24-to-36-hour rebuild window on degraded RAID 6. Ceph OSD nodes where the rear bay pair hosts the OS mirror and the front 12 bays host the OSDs. File servers that benefit from physical separation between OS storage and workload storage. Any storage-dense deployment that genuinely benefits from 14 LFF in a single chassis and does not need full PCIe slot capacity.

Where to look instead: If you want more bays for additional capacity rather than for hot-spares or OS separation, the 12-Bay 3.5" reference variant with mid-bay expansion gives you 16 LFF total without consuming PCIe slot 3. If hot-spares can live as cold-spares on the shelf rather than dedicated chassis bays, the reference variant is cleaner. If random-IOPS-sensitive workloads or SSDs are the right drive class, the 24-Bay 2.5" companion is the SFF density answer. If your design needs more than 18 LFF total across the family, external SAS expansion via PERC H840 + MD1400 / MD1420 JBOD is the scale-out path.

Bottom line: The + 2-Bay LFF RFB is a specialist variant. The typical buyer is an IT director or storage architect specifically designing around in-chassis hot-spares or physically-separated OS storage for an unattended storage-dense deployment, with a 4 to 6 year deployment horizon. Half our quote conversations on this variant end with us steering the buyer to the reference 12-Bay 3.5" because the additional bays are not specifically wanted for hot-spare or OS-separation reasons; the other half are the right buyer for this variant, where in-chassis rear-accessible hot-swap on the spare drives genuinely matters. For that buyer, this is the configuration.

Where the R740xd Fits in 2026

The R740xd is 14th gen Dell PowerEdge (Skylake-SP 2017, Cascade Lake 2019). Mature, well-supported on the secondary market, our highest-velocity storage-dense 14th gen SKU family. Dell ProSupport on the R740xd is approaching end-of-extended-support; third-party maintenance is the standard production support path in 2026.

vs. 13th gen R730xd: Skip the R730xd unless you have a hard cost ceiling. The R740xd brings Skylake or Cascade Lake (vs Broadwell), DDR4 (vs DDR3), iDRAC9 with Silicon Root of Trust, and a 4 to 6 year longer parts availability runway.

vs. 15th gen R750xd (Ice Lake, 2021): R750xd adds PCIe Gen4 (doubled bandwidth), DDR4-3200, 32 DIMM slots, and 3rd Gen Xeon Scalable. The 15th gen rear-bay variants exist with similar architectural tradeoffs. For workloads bottlenecked on memory bandwidth or PCIe Gen4 I/O, R750xd is the upgrade path. For bulk LFF at lowest cost, the R740xd is still competitive.

vs. 16th gen R760xd2: R760xd2 is the current production storage-dense 2U with DDR5-5600, PCIe Gen5, up to 64 cores per socket on Emerald, BOSS-N1 NVMe boot, PERC H965i tri-mode. For workloads in production past 2030 or needing current-gen Dell support contracts, R760xd2 is the right step up.

vs. HPE counterpart: The cross-vendor analog is the HPE ProLiant DL380 Gen10 12 LFF chassis with rear-bay options. Same Purley dual-socket platform vocabulary, comparable iLO 5 management, comparable PSU envelope. The HPE LFF chassis tops out at 12 front bays with limited rear-bay options; the Dell-side advantage in 2026 is supply depth on the LFF + rear-bay configuration and the maturity of OpenManage tooling for fleet management.

Honest Limitations

Limitations specific to this chassis (in addition to the platform-level limits shared with the rest of the R740xd family):

• PCIe slot count is reduced. Riser 3 is consumed by rear-bay cabling. Effective PCIe slot count drops from 8 (reference variant) to roughly 6 slots. Confirm your PCIe card list at quote time.
• Mid-bay and rear-bay are mutually exclusive. If you need 4 additional LFF or SFF bays, the mid-bay option on the reference 12-Bay 3.5" is the path. If you need 2 rear-accessible hot-swap bays specifically, this variant is the path. Pick one architectural direction at order time; field conversion requires chassis disassembly.
• Rear-bay service access requires rack rear clearance. Hot-swap drive replacement on the rear pair requires unobstructed rear-rack access. CMA installation is strongly recommended to keep cabling out of the service path.
• No meaningful GPU support. Same as the reference LFF variant; the LFF chassis is not a GPU chassis, and the rear-bay assembly compounds the PCIe constraint.
• RAID 5 is unsafe on large-capacity LFF. 16 TB and 20 TB drive rebuilds on degraded RAID 6 take 24 to 36 hours under load. We configure RAID 6 or RAID 60 only above 4 TB per drive.
• PCIe Gen3 ceiling. All slots and the backplane are PCIe 3.0. Upgrade path is 15th gen (Gen4) or 16th gen (Gen5).
• Memory speed drops at 2 DPC on V2 Cascade Lake. 2933 MT/s at 1 DPC, 2666 MT/s at 2 DPC.
• High-TDP heatsink mandatory above 150W. The 14-drive thermal load is slightly higher than the reference 12-drive variant.
• Single-socket disables half the platform. Particularly costly on this variant because the PCIe budget is already reduced.
• Bay configuration is order-time locked. The rear-bay assembly is part of the physical chassis specification.
• Spin-up current at scale. Fourteen-drive cold-boot surge exceeds twelve-drive; PSU floor is 1100W Platinum.

Workload Fit

Where to Look Instead

• R740xd 12-Bay 3.5": The reference variant. Same front bays, no rear bay, full PCIe slot count, supports mid-bay expansion to 16 LFF. The natural alternative if you do not specifically need in-chassis rear-bay hot-swap.
• R740xd 24-Bay 2.5": SFF density companion if performance or GPU support matters more than bulk LFF capacity.
• R740xd 24-Bay 2.5" + 4-Bay RFB: The SFF equivalent of this variant, with the same architectural tradeoff (more bays, fewer PCIe slots) but in SFF form. 28 SFF total.
• R740xd 24-Bay 2.5" NVMe: All-NVMe companion. Different controller architecture; software RAID only on data path.
• R740 16-Bay 2.5": Compute-balanced 2U companion. Choose when storage density is not the constraint and 8 to 16 front bays is sufficient.

Ready to Configure?

Tell us your workload, target CPU class, memory capacity, drive configuration (capacity per drive, RAID level, how you intend to use the 2 rear bays: hot-spares, OS storage, or additional capacity), network bandwidth requirements, and quantity. Our account team will put together a tailored quote within 24 hours. Not sure if the rear flex bay is worth the PCIe slot tradeoff? Tell us about your workload and we will recommend the reference 12-Bay 3.5" with mid-bay or shelf-spare strategy if the rear-bay justification is not strong. That conversation is part of the quote process.

Call 1-800-778-1545 for our account team. Every R740xd ships with a 180-day standard warranty, runs through our 12+ hour burn-in with full surface-scan and SMART validation on every drive bay including the rear pair, and qualifies for volume pricing at 5 units and above. Request a Quote | Contact our account team