Technical data sheet · ProLiant Compute Gen12 · 2U storage server, one socket

HPE ProLiant Compute DL340e Gen12Specifications, configurations & comparisons

HPE’s ProLiant Compute DL340e Gen12 is a storage-optimised 2U server with one Intel Xeon 6 socket and a single LFF chassis holding 16 or 24 front 3.5-inch drives. Its rear is an either/or decision — E3.S NVMe flash with four PCIe slots, or up to six PCIe slots and no drives — and HPE presents it as the future generation of its Alletra Storage Server 4000 line.

2U Rack1 socketXeon 6 E-coreXeon 6 P-coreHPE iLO 7

144cores per CPUsingle socket · Xeon 6 E-core

2TBDDR5 maximum16 DIMM slots

32drive bays3 drive-cage kits

2GPU options2 accelerators listed

3,200Wlargest PSU7 supply options

30processor SKUs2 families

Configure a DL340e Gen12 →Get a UK quote Refurbished alternatives ↓

Every figure checked against the HPE ProLiant Compute DL340e Gen12 QuickSpecs (Version 5 - August 3, 2026 (footer: a50014651enw, - 17414 - Worldwide - V5 - 03-August-2026))

Image: Hewlett Packard Enterprise

Form factor: 2U Rack · 1 socket
Processors: Xeon 6 E-core · Xeon 6 P-core
Memory: 16 × DDR5 RDIMM · up to 2TB
Drive bays: Up to 32 · 3 drive-cage kits
Expansion: 6 × PCIe · 2 × OCP 3.0
GPUs: 2 listed
Boot: M.2 and NS204i · 5 boot options
Management: HPE iLO 7

01 — Overview

The DL340e Gen12 at a glance

Our read of HPE’s documentation: where the DL340e Gen12 is strong, and the limits worth knowing before you spec one.

Strengths

Up to 24 × 3.5-inch SAS/SATA bays in 2U, and HPE’s capacity table fills them with 26 TB disks for 624 TB raw.
The Rear EDSFF 4x PCIe kit adds eight E3.S NVMe data bays and two dedicated E3.S boot bays while keeping four PCIe slots.
Rear flash can be cabled straight to the processor at PCIe Gen5 x4 or x2, or placed behind an internal controller of its own.
Pair a RICH I/O processor with the 6x PCIe kit and the rear offers six PCIe 5.0 slots and two OCP 3.0 slots — room for extra RAID controllers, Fibre Channel HBAs and fast networking.

Watch-outs

The rear is either/or: the 6x PCIe kit adds slots only, and the rear EDSFF kit gives up slots 4 and 5 and OCP B.
Memory stops at 2 TB — sixteen 128 GB RDIMMs at two per channel, so 5200 MT/s — and no 256 GB module is offered.
Each MR216i-p or MR416i-p is rated for up to 16 drives, and HPE’s own configurations with more than 16 front disks carry two controllers; Intel VROC does not cover SATA.
Slot 5, OCP B, the x4 rear E3.S cable kit and the two MCIO cable kits for OCP B all require a Single Socket (RICH I/O) processor.
A long, heavy box: 80.65 cm deep and up to 46.55 kg in HPE’s maximum configuration, with no optical drive and rails as an option.

Processors30 SKUs

Cores / CPU8–144

DIMM slots16

Drive-cage kits3

Max bays32

GPUs2 listed

PSU options7 · to 3,200 W

02 — Processors

30 supported processors, mapped

Thirty Xeon 6 option kits fit the DL340e, from the 8-core 6507P to the 144-core 6766E and 6780E, always one per server. In a storage node the deciding factor is usually I/O rather than core count, because only the six Single Socket (RICH I/O) parts unlock slot 5, OCP B and the fastest rear flash cabling.

Processor landscape — cores × TDP

30 SKUs · 2 families

Xeon 6 E-core 7Xeon 6 P-core 23Bubble size = L3 cache · hover a bubble for the full SKU

Processor explorer

filter · sort · compare

Sort

Processor	Cores / threads	Base	L3 cache	TDP	W / core	Memory
Intel Xeon 6780E	144	2.2 GHz	108 MB	330 W	2.3	DDR5-6400
Intel Xeon 6766E	144	1.9 GHz	108 MB	250 W	1.7	DDR5-6400
Intel Xeon 6756E	128	1.8 GHz	96 MB	225 W	1.8	DDR5-6400
Intel Xeon 6746E	112	2 GHz	96 MB	250 W	2.2	DDR5-6400
Intel Xeon 6731E	96	2.2 GHz	96 MB	250 W	2.6	DDR5-6400
Intel Xeon 6740E	96	2.4 GHz	96 MB	250 W	2.6	DDR5-6400
Intel Xeon 6787P	86	2 GHz	336 MB	350 W	4.1	DDR5-6400
Intel Xeon 6781P	80	2 GHz	336 MB	350 W	4.4	DDR5-6400
Intel Xeon 6710E	64	2.4 GHz	96 MB	205 W	3.2	DDR5-6400
Intel Xeon 6767P	64	2.4 GHz	336 MB	350 W	5.5	DDR5-6400
Intel Xeon 6761P	64	2.5 GHz	336 MB	350 W	5.5	DDR5-6400
Intel Xeon 6760P	64	2.2 GHz	320 MB	330 W	5.2	DDR5-6400
Intel Xeon 6747P	48	2.7 GHz	288 MB	330 W	6.9	DDR5-6400
Intel Xeon 6741P	48	2.5 GHz	288 MB	300 W	6.3	DDR5-6400
Intel Xeon 6740P	48	2.1 GHz	288 MB	270 W	5.6	DDR5-6400
Intel Xeon 6736P	36	2 GHz	144 MB	205 W	5.7	DDR5-6400
Intel Xeon 6732P	32	3.8 GHz	—	350 W	10.9	DDR5-6400
Intel Xeon 6745P	32	3.1 GHz	336 MB	300 W	9.4	DDR5-6400
Intel Xeon 6737P	32	2.9 GHz	144 MB	270 W	8.4	DDR5-6400
Intel Xeon 6730P	32	2.5 GHz	288 MB	250 W	7.8	DDR5-6400
Intel Xeon 6731P	32	2.5 GHz	144 MB	245 W	7.7	DDR5-6400
Intel Xeon 6530P	32	2.3 GHz	144 MB	225 W	7.0	DDR5-6400
Intel Xeon 6527P	24	3 GHz	144 MB	255 W	10.6	DDR5-6400
Intel Xeon 6521P	24	2.6 GHz	144 MB	225 W	9.4	DDR5-6400
Intel Xeon 6520P	24	2.4 GHz	144 MB	210 W	8.8	DDR5-6400
Intel Xeon 6517P	16	3.2 GHz	72 MB	190 W	11.9	DDR5-6400
Intel Xeon 6515P	16	2.3 GHz	72 MB	150 W	9.4	DDR5-6400
Intel Xeon 6511P	16	2.3 GHz	72 MB	150 W	9.4	DDR5-6400
Intel Xeon 6505P	12	2.2 GHz	48 MB	150 W	12.5	DDR5-6400
Intel Xeon 6507P	8	3.5 GHz	48 MB	150 W	18.8	DDR5-6400

RICH I/O processors (6511P, 6521P, 6731P, 6741P, 6761P, 6781P) print zero UPI links and are the group HPE associates with 136 PCIe lanes; all three configurations in HPE’s acoustic tables use one.
Every DL340e takes the performance heat sink, and the CTO server includes six performance fans.
The 6710E, 6731E and 6746E are listed at DDR5 5600 MT/s, and HPE notes delayed availability for HCC and LCC die processors.
The tables clash in three places: Standard Features lists the 6515P at 2.4 GHz while its P74506-B21 kit says 2.3 GHz; a 2.3 GHz, 225 W Mainline row is labelled 6730P although kit P74571-B21 names it 6530P; and the orderable 6732P has no Standard Features row.

03 — Memory

16 DDR5 DIMM slots

The board carries sixteen DDR5 RDIMM slots — eight channels, each with two — and the biggest module offered is 128 GB. That puts the ceiling at 2 TB, reached only with every slot filled at 5200 MT/s; one DIMM per channel (8 × 128 GB) gives 1 TB at 6400 MT/s.

Capacity with every slot filled

by DIMM size

Operating speed

per HPE memory tables

Processor	1 DIMM / channel	2 DIMMs / channel
Intel Xeon 6 (HPE platform rating)	6400 MT/s	5200 MT/s

The RDIMM list runs 16, 32, 64, 96 and 128 GB; no 3DS module appears.
Advanced ECC, ADDDC (on by default) and memory mirroring are the protection modes.
HPE says every listed processor supports the 2 TB maximum, with top speed set by the processor model.

04 — Storage

3 drive-cage kits, up to 32 bays

The DL340e is organised around its front. One of two factory-fitted LFF kits sets it at 16 or 24 bays, for SAS or SATA drives only. The rear kit then decides whether the server also carries E3.S NVMe flash or keeps all six PCIe slots.

Headline layouts

front panel view

Front panel

Rear module

Front 24LFF kit with the Rear EDSFF 4x PCIe kit: 24 SAS/SATA disk bays and eight E3.S NVMe data bays, keeping PCIe slots 1, 2, 3 and 6 and OCP A. Two more rear E3.S bays serve boot only.

SAS/SATANVMeSAS/SATA + NVMe

Controllers & boot

HPE MR216i-p Gen11 x16 Lanes without Cache PCI SPDM Plug-in Storage Controller — HBA. Tri-mode; supports SATA/SAS HDD, SATA/SAS SSD and NVMe per the Drive/Interface Support Matrix. 'These controllers support up to 16 SAS/SATA/NVMe Drives.' Also the controller used for the 2 dedicated rear EDSFF boot bays when cable kit P77188-B21 is selected.
HPE MR416i-p Gen11 x16 Lanes 8GB Cache PCI SPDM Plug-in Storage Controller — RAID, 8GB cache. Tri-mode; supports up to 16 SAS/SATA/NVMe drives. Requires HPE 96W Smart Storage Lithium-ion Battery with 145mm Cable Kit (P01366-B21) or HPE Smart Hybrid Capacitor w/ 145mm Cable (P02377-B21). Note the Battery/Capacitor option list itself offers P65038-B21 (16W Smart Hybrid Capacitor with 145mm Cable) and P01366-B21, not P02377-B21.
HPE Smart Array E208e-p SR Gen10 (8 External Lanes/No Cache) 12G SAS PCIe Plug-in Controller — RAID. External-ports SAS controller offered in the Step 2 storage-controller list; not listed in the Standard Features 'available internal controllers' prose.
Intel Virtual RAID on CPU (VROC) Premium for HPE — Software RAID. Supports RAID 0, 1, 5, 10. Supports up to 32 NVMe drives, depending on processor. SATA drives NOT supported.
Intel Virtual RAID on CPU (VROC) RAID 1 for HPE — Software RAID. Supports RAID 1 only. Supports up to 32 NVMe drives, depending on processor. SATA drives NOT supported.
HPE NS204i-u v2 480GB NVMe Hot Plug Boot Optimized Storage Device — Boot. Includes 2 NVMe SSDs; RAID 1 is preconfigured and no additional RAID can be applied. Requires the NS204i-u boot enablement/cable kit P71433-B21.
HPE NS204i-u v2 960GB NVMe Hot Plug Boot Optimized Storage Device — Boot. Includes 2 NVMe SSDs; RAID 1 preconfigured. Requires P71433-B21.
HPE NS204i-u v2 960GB NVMe SED Hot Plug Boot Optimized Storage Device — Boot. Self-encrypting variant. Includes 2 NVMe SSDs; RAID 1 preconfigured. Requires P71433-B21.
HPE NS204i-u v2 480GB NVMe Hot Plug Boot Optimized Storage Device (P78279-B21) - 2 x M.2 NVMe, RAID 1 preconfigured — boot
HPE NS204i-u v2 960GB NVMe Hot Plug Boot Optimized Storage Device (P81160-B21) — boot
HPE NS204i-u v2 960GB NVMe SED Hot Plug Boot Optimized Storage Device (P81162-B21) — boot
HPE ProLiant Compute DL3XX Gen12 NS204i-u Rear Cable Kit / Boot Extension Enablement Kit (P71433-B21) - required when NS204i-u v2 is selected — boot

All 8 controllers and 5 boot options

2 dedicated rear E3.S EDSFF boot bays via the Rear EDSFF 4x PCIe Enablement Kit (P85522-B21) + P77188-B21 cable kit to an additional MR216i-p (P47785-B21) — boot

Rear E3.S cabling is one of three kits: 8EDSFF x4 direct attach (Gen5 x4 to the CPU, RICH I/O only), 8EDSFF x2 direct attach (Gen5 x2), or a controller cable kit that places the eight bays behind an additional internal controller.
The two rear boot bays connect through cable kit P77188-B21 to an extra MR216i-p, and that kit cannot be combined with any of the three rear data-bay cable kits.
HPE’s maximum-storage table credits the rear cage with 491.52 TB from 8 × 61.44 TB E3.S drives, while the E3.S drives in the option list stop at 15.36 TB.
The MR216i-p and MR416i-p are tri-mode (SAS, SATA and NVMe). The MR416i-p calls for a 96 W battery or the hybrid capacitor P02377-B21, but the capacitor on offer is the 16 W P65038-B21. An E208e-p adds external SAS.
NS204i-u v2 boot devices (480 GB, 960 GB or 960 GB SED, RAID 1 preset) need the P71433-B21 kit. No data drives ship as standard.

Every documented drive-cage kit

3 with drive bays

2.5-inch3.5-inchEDSFF (E1.S / E3.S)

05 — Accelerators & I/O

GPUs, PCIe and networking

Accelerator choice is narrow: HPE lists only the NVIDIA L4 24GB and the RTX A1000 8GB, with no card count or power figure. Its SKU3 acoustic test system places one L4 beside 16 LFF drives and eight E3.S SSDs, on two 2400 W supplies with five rear fans added to the six system fans. NVIDIA L4 24GB or RTX A1000 8GB only; HPE states no maximum count.

NVIDIA L4 24GB PCIe Accelerator for HPE

24GB

NVIDIA RTX A1000 8GB PCIe Accelerator for HPE

8GB

I/O topology

1 socket

Six rear PCIe 5.0 slots is the headline figure, but only with a RICH I/O processor and the 6x PCIe kit. Choose rear flash instead and the server keeps four slots and a single OCP 3.0 position.

Network adapters HPE lists

23 options

Adapter	Ports	Form
Broadcom BCM5719 Ethernet 1Gb 4-port BASE-T Adapter for HPE	4 × 1GbE	PCIe
Broadcom BCM57412 Ethernet 10Gb 2-port SFP+ Adapter for HPE	2 × 10GbE	PCIe
Broadcom BCM57416 Ethernet 10Gb 2-port BASE-T Adapter for HPE	2 × 10GbE	PCIe
Intel E810-XXVDA2 Ethernet 10/25Gb 2-port SFP28 Adapter for HPE	2 × 10/25GbE	PCIe
Intel E810-XXVDA4 Ethernet 10/25Gb 4-port SFP28 Adapter for HPE	4 × 10/25GbE	PCIe
Broadcom BCM57414 Ethernet 10/25Gb 2-port SFP28 Adapter for HPE	2 × 10/25GbE	PCIe
Broadcom BCM57504 Ethernet 10/25Gb 4-port SFP28 Adapter for HPE	4 × 10/25GbE	PCIe
NVIDIA Ethernet 10/25Gb 2-port SFP28 NVMe-oF Crypto Adapter for HPE	2 × 10/25GbE	PCIe
Intel E810-CQDA2 Ethernet 100Gb 2-port QSFP28 Adapter for HPE	2 × 100GbE	PCIe
Mellanox MCX623106AS-CDAT Ethernet 100Gb 2-port QSFP56 Adapter for HPE	2 × 100GbE	PCIe
HPE Slingshot SA210S Ethernet 200Gb 1-port PCIe NIC	1 × 200GbE	PCIe
Broadcom BCM5719 Ethernet 1Gb 4-port BASE-T OCP3 Adapter for HPE	4 × 1GbE	OCP 3.0
Broadcom BCM57412 Ethernet 10Gb 2-port SFP+ OCP3 Adapter for HPE	2 × 10GbE	OCP 3.0
Broadcom BCM57416 Ethernet 10Gb 2-port BASE-T OCP3 Adapter for HPE	2 × 10GbE	OCP 3.0
Intel E810-XXVDA2 Ethernet 10/25Gb 2-port SFP28 OCP3 Adapter for HPE	2 × 10/25GbE	OCP 3.0
Intel E810-XXVDA4 Ethernet 10/25Gb 4-port SFP28 OCP3 Adapter for HPE	4 × 10/25GbE	OCP 3.0
Broadcom BCM57414 Ethernet 10/25Gb 2-port SFP28 OCP3 Adapter for HPE	2 × 10/25GbE	OCP 3.0
Broadcom BCM57504 Ethernet 10/25Gb 4-port SFP28 OCP3 Adapter for HPE	4 × 10/25GbE	OCP 3.0
Intel E810-CQDA2 Ethernet 100Gb 2-port QSFP28 OCP3 Adapter for HPE	2 × 100GbE	OCP 3.0
Broadcom BCM57608 Ethernet 100Gb 2-port QSFP112 OCP3 Adapter for HPE	2 × 100GbE	OCP 3.0
NVIDIA Ethernet 100Gb 2-port NVMe-oF Offload Adapter for HPE	2 × 100GbE	OCP 3.0
HPE InfiniBand NDR/Ethernet 400Gb 1-port OSFP PCIe5 x16 MCX75310AAS-NEAT Generic Adapter	1 × 400Gb NDR InfiniBand / 400GbE	PCIe
HPE InfiniBand NDR200/Ethernet 200Gb 1-port OSFP PCIe5 x16 MCX75310AAS-HEAT Generic Adapter	1 × 200Gb NDR200 InfiniBand / 200GbE	PCIe

Slots 1 and 2 are x8 electrically in x16 connectors; slots 3 to 6 are full x16.
With the rear EDSFF kit fitted, slots 4 and 5 and OCP B are lost; slots 1, 2, 3 and 6 remain.
OCP B is cabled at Gen5 x16 (P71426-B21) or Gen5 x8 (P75154-B21); a third, direct-attach MXIO kit (P77556-B21) is listed with no notes.
No network port is built in, so each server needs an OCP 3.0 or PCIe adapter; Fibre Channel HBAs (SN1610Q, SN1700Q, SN1620E, SN1720E) are also on the option list.

06 — Power & cooling

7 power supplies, 800–3,200 W

Only M-CRPS hot-plug supplies are offered, and a server cannot mix types: 800 W Platinum; 1000, 1500, 2400 and 3200 W Titanium; and 1300 W or 2200 W for −48 V DC. HPE’s acoustic test systems ran on two 800 W units (12-LFF entry build) up to two 2400 W units (16 LFF plus an L4).

AC−48 V DC

Low-line input cuts the rating: at 100–127 V HPE gives the 3200 W supply a steady-state 1600 W and the 2400 W supply 1200 W.
The Standard Features text names only the four Titanium units, rated at 96% efficiency; the 800 W Platinum and the −48 V units appear only in the option list, where part numbers are printed with a truncated “-B2” suffix.

07 — Management, security & OS

Run it, secure it, choose the OS

Management

HPE iLO 7 (ASIC on DC-SCM module P76981-B21)
Dedicated 1 GbE iLO port and front USB-C service port
iLO RESTful API (Redfish conformant)
HPE OneView Standard
HPE Compute Ops Management — 3-year subscription by default
Intelligent Provisioning, Active Health System, Smart Update
OpenBMC capable via transfer of ownership
Optional HPE iLO Advanced

Security

Embedded TPM 2.0
UEFI Secure Boot and Secure Start
Self-encrypting drive support and iLO/UEFI-managed encryption
One-button secure erase to NIST SP 800-88
FIPS 140-3 and NIST SP 800-53 / 800-171 compliance
Bezel lock and chassis intrusion detection
HPE Trusted Supply Chain option

Operating systems

No OS list in the QuickSpecs — certified systems are in HPE’s Servers Support & Certification Matrices
UEFI boot mode only

08 — Compare

How the DL340e Gen12 compares with its family

The DL340e is the storage-optimised model in HPE’s Gen12 ProLiant rack range. The matrix places it with the three-chassis DL340, the two-socket DL380, the AMD EPYC single-socket DL345 and the 1U DL320, each read from its own verified spec file.

This modelSiblings and successorEach value from that model’s own verified spec file · bars scale per column

DL340 Gen12 data sheet DL380 Gen12 data sheet DL345 Gen12 data sheet DL320 Gen12 data sheet Dell PowerEdge R760xd2 data sheet Dell PowerEdge R7725xd data sheet Lenovo ThinkSystem SR650 V4 data sheet

09 — Use cases

Four builds that suit the DL340e Gen12

Four builds weighted towards capacity and data services. Every part is an option our configurator lists for the DL340e, and each link opens ready to change.

Software-defined storage

Ceph or object node with rear flash

HPE aims the DL340e at software-defined storage. Twenty-four disk bays carry the capacity tier while the eight rear E3.S bays hold metadata or cache on NVMe, and a RICH I/O processor lets those bays run Gen5 x4 direct to the CPU.

1 × Xeon 6521P — 24 cores @ 2.6 GHz, 225 W
24 × 24 TB 3.5" SAS HDD — 576 TB raw
8 × 7.68 TB E3.S NVMe in the rear cage
8 × 32 GB DDR5-6400 — 256 GB
MR216i-p tri-mode controller (second one needed for all 24 bays)
NS204i-u v2 mirrored boot
Broadcom BCM57504 4 × 10/25GbE OCP 3.0
2 × 1500 W M-CRPS Titanium

The link opens with one MR216i-p — add a second for the full 24-bay front. The rear EDSFF kit costs PCIe slots 4 and 5 and OCP B, and x4 direct-attach rear cabling needs a RICH I/O processor.

Open this build in the configurator →

Backup & archive

Maximum-capacity backup repository

HPE’s capacity table peaks at 624 TB from 24 × 26 TB disks. Keeping the Rear 6x PCIe kit leaves slots for a second RAID controller plus external SAS or Fibre Channel HBAs.

1 × Xeon 6511P — 16 cores @ 2.3 GHz, 150 W
24 × 26 TB 3.5" SATA HDD — 624 TB raw
MR416i-p with 8 GB cache (second one needed for 24 drives)
NS204i-u v2 mirrored boot
8 × 32 GB DDR5-6400 — 256 GB
Broadcom BCM57414 2 × 10/25GbE OCP 3.0
2 × 1000 W M-CRPS Titanium

The link opens with one MR416i-p; add the second for 24 drives. Each MR416i-p needs a 96 W battery or hybrid capacitor.

Open this build in the configurator →

In-server analytics

Data-lake node with an NVIDIA L4

In-server storage analytics is one of HPE’s named workloads, and its SKU3 test system pairs 16 LFF drives, eight E3.S SSDs and one L4. This build follows that pattern with the same 32-core RICH I/O processor.

1 × Xeon 6731P — 32 cores @ 2.5 GHz, 245 W
1 × NVIDIA L4 24GB
16 × 24 TB 3.5" SAS HDD — 384 TB raw
8 × 7.68 TB E3.S NVMe
8 × 64 GB DDR5-6400 — 512 GB
MR416i-p with 8 GB cache
Intel E810-XXVDA4 4 × 10/25GbE OCP 3.0
2 × 2400 W M-CRPS Titanium

HPE’s matching test system adds five rear fans and a fan OCP interposer; we confirm the cooling parts at quote.

Open this build in the configurator →

File services

16-bay file server on one controller

Where 16 bays are enough, the 16LFF kit matches one MR416i-p’s 16-drive rating, and a Mainline processor without RICH I/O still gets five rear PCIe slots from the 6x PCIe kit.

1 × Xeon 6515P — 16 cores @ 2.3 GHz, 150 W
16 × 24 TB 3.5" SATA HDD — 384 TB raw
One MR416i-p covers all 16 bays
NS204i-u v2 mirrored boot
8 × 32 GB DDR5-6400 — 256 GB
Broadcom BCM57416 2 × 10GBASE-T OCP 3.0
2 × 1000 W M-CRPS Titanium

Open this build in the configurator →

10 — Refurbished alternatives

When a refurbished ProLiant makes more sense

HPE calls the DL340e all-new, and our refurbished configurator has no earlier version of it. For bulk LFF capacity on a tighter budget, these 12-bay 2U ProLiant servers from our refurbished configurator are the practical alternatives — half the front bays and DDR4.

Gen10 Plus · re-certified

HPE ProLiant DL380 Gen10 Plus

2U · 2 × Ice Lake Xeon
12 × LFF or 24 × SFF
Up to 8 TB DDR4-3200
PCIe 4.0 · OCP 3.0 · iLO 5

A 12-bay LFF backup or file target where PCIe 4.0 is enough.

Configure a refurbished DL380 Gen10 Plus →

Gen10 Plus · re-certified

HPE ProLiant DL385 Gen10 Plus

2U · 2 × AMD EPYC 7002/7003
12 × LFF or 24 × SFF
Up to 128 cores · DDR4-3200
iLO 5

When a Ceph or object node needs more cores than drive bays.

Configure a refurbished DL385 Gen10 Plus →

Gen10 · re-certified

HPE ProLiant DL380 Gen10

2U · 2 × Xeon Scalable
12 × LFF or 24 × SFF
Up to 3 TB DDR4
iLO 5

The older Gen10 route to a 12-bay LFF archive box.

Configure a refurbished DL380 Gen10 →

Refurbished HPE ProLiant servers Refurbished ProLiant configurator New vs refurbished cost calculator

11 — Full specifications

HPE ProLiant Compute DL340e Gen12 specifications

Chassis & cooling

Form factor	2U rack · one LFF CTO chassis (P85518-B21)
Dimensions (H × W × D)	8.75 × 44.80 × 80.65 cm
Weight	22.93 kg minimum · 46.55 kg maximum (24 LFF + 8 E3.S, 2 PSUs, 16 DIMMs)
Fans	Six performance fans included
Heat sink	Performance heat sink required
Rails	Optional ball-bearing rail kit and cable management arm

Processor

Sockets	One
Families	Xeon 6 E-core and P-core: Performance per Watt, Performance, Mainline, Single Socket (RICH I/O)
Cores	8 to 144 (6766E, 6780E)
TDP range	150 W to 350 W
PCIe lanes	136 with RICH I/O processors

Memory

Slots	16 DDR5 RDIMM · 8 channels × 2 DIMMs
DIMM sizes	16, 32, 64, 96 and 128 GB
Speed	6400 MT/s (1 DPC) · 5200 MT/s (2 DPC)
Maximum	2 TB (16 × 128 GB)

Storage

Front	16 or 24 × 3.5" SAS/SATA — one factory kit required
Rear	Up to 8 × E3.S NVMe data bays + 2 E3.S boot bays (Rear EDSFF 4x PCIe kit)
Maximum capacity (HPE table)	624 TB (24 × 26 TB HDD) · rear 491.52 TB (8 × 61.44 TB), though no listed E3.S exceeds 15.36 TB
Controllers	MR216i-p, MR416i-p (tri-mode, 16 drives each) · E208e-p external · Intel VROC for NVMe
Boot	NS204i-u v2 — 2 × NVMe, RAID 1 preset
Optical	Not supported

Expansion & networking

Rear 6x PCIe kit	Slots 1–6, PCIe 5.0 FHHL (slots 1–2 x8) + OCP A; slot 5 and OCP B need RICH I/O
Rear EDSFF 4x PCIe kit	Slots 1, 2, 3 and 6 + OCP A
Embedded NIC	None — OCP 3.0 or PCIe adapter required

Accelerators

Options	NVIDIA L4 24GB · NVIDIA RTX A1000 8GB

Power

Supplies	M-CRPS hot-plug, no mixing
AC	800 W Platinum · 1000, 1500, 2400, 3200 W Titanium
DC	1300 W and 2200 W −48 VDC
Input	100–120 VAC or 200–240 VAC; 240 VDC in China

Ports, video & support

Front	1 × USB 3.2 Gen1 · USB-C iLO service port
Rear	2 × USB 3.2 Gen1 · VGA on DC-SCM · 1 GbE iLO port · optional serial
Internal	1 × USB 3.2 Gen1
Video	16 MB, up to 1920 × 1200 at 60 Hz
Acoustics (idle)	40 / 45 / 48 dBA — SKU1 / SKU2 / SKU3 test systems
Warranty	3 years parts, labour and onsite, next business day

12 — FAQ

DL340e Gen12 questions, answered from the documentation

How is the DL340e Gen12 different from the DL340 Gen12?

The DL340e is HPE’s storage-optimised single-socket 2U: one LFF chassis with 16 or 24 front 3.5-inch bays and optional rear E3.S flash, with memory capped at 2 TB. The DL340 is built on SFF, LFF or GPU chassis instead, takes up to 4 TB, and its SFF version is 63.95 cm deep against 80.65 cm for the DL340e.

How many drives does the DL340e Gen12 hold?

Up to 24 × 3.5-inch SAS/SATA drives at the front, plus eight E3.S NVMe data bays and two E3.S boot bays at the rear with the Rear EDSFF 4x PCIe kit. HPE’s capacity table gives 624 TB from 24 × 26 TB disks.

What is the maximum memory of the DL340e Gen12?

2 TB, using 16 × 128 GB RDIMMs across its 16 slots. With two DIMMs per channel that runs at 5200 MT/s; one DIMM per channel runs at 6400 MT/s but tops out at 1 TB. There is no 256 GB DIMM option.

Can I have rear NVMe drives and six PCIe slots together?

No. Every DL340e takes exactly one of two rear kits. The Rear 6x PCIe kit gives up to six slots and two OCP slots (slot 5 and OCP B need a RICH I/O processor) but no drives; the Rear EDSFF 4x PCIe kit gives the E3.S bays but keeps only slots 1, 2, 3 and 6 and OCP A.

How many RAID controllers does a 24-drive DL340e need?

Both internal controllers, the MR216i-p and MR416i-p, are rated for up to 16 SAS, SATA or NVMe drives, and HPE’s maximum-weight configuration with 24 front disks lists two MR PCIe controllers. Intel VROC is NVMe-only and cannot protect SATA disks.

Does the DL340e Gen12 support GPUs?

Two accelerators are listed, the NVIDIA L4 24GB and the RTX A1000 8GB, with no maximum count stated. HPE’s SKU3 test system combines one L4 with 16 LFF drives, eight E3.S SSDs and two 2400 W supplies.

Which processors suit the DL340e?

All 30 listed Xeon 6 kits fit, from 8 to 144 cores. The six Single Socket (RICH I/O) parts matter most here: HPE links them to 136 PCIe lanes and requires one for slot 5, OCP B and the x4 rear E3.S cabling.

How big and heavy is the DL340e Gen12?

The LFF chassis measures 8.75 × 44.80 × 80.65 cm (H × W × D). HPE gives 22.93 kg for a minimal build and 46.55 kg for one with 24 LFF drives, eight E3.S drives, two supplies, 16 DIMMs and two controllers.

What power supplies does the DL340e take?

M-CRPS hot-plug units only, one type per server: an 800 W Platinum model, Titanium models from 1000 W to 3200 W, and 1300 W or 2200 W units for −48 V DC. Low-line input halves the 3200 W and 2400 W units, to 1600 W and 1200 W.

Is the HPE ProLiant DL340e Gen12 end of life?

Not according to HPE: its QuickSpecs appeared in April 2026 and were at Version 5 in August 2026, with no withdrawal notice. No end-of-service date for the model is given there; the Servnet end-of-life checker tracks dates when HPE publishes them.

Sources & verification

Where these figures come from

HPE ProLiant Compute DL340e Gen12 QuickSpecs (Version 5 - August 3, 2026) — Overview, Standard Features (processors, memory, expansion slots, maximum storage, controllers, power, interfaces), Configuration Information, Core Options (front and rear enablement kits, cable kits, controllers, accelerators, power supplies) and Technical Specifications, including the SKU1–SKU3 acoustic test systems.
HPE ProLiant Compute DL340 Gen12 QuickSpecs (Version 15 - 08-September-2026) — DL340 chassis types, memory maximum and SFF depth — used only in the sibling FAQ.
Hewlett Packard Enterprise product imagery (HPE DAM) — Front with the 24LFF kit (badge “DL340e Gen12”), rear s00015647 and internal s00015648 — the renders used in the QuickSpecs “Front View”, “Rear View – 6x PCIe Enablement Kit” and “Internal View” figures.

Specifications are extracted from HPE’s published documents and independently re-checked line by line. Configurations are quote-based; availability and exact options are confirmed at quotation. Last reviewed 2026-09-11.

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The DL340e Gen12 at a glance

Strengths

Watch-outs

30 supported processors, mapped

Processor landscape — cores × TDP

Processor explorer

16 DDR5 DIMM slots

Capacity with every slot filled

Operating speed

3 drive-cage kits, up to 32 bays

Headline layouts

Controllers & boot

Every documented drive-cage kit

GPUs, PCIe and networking

NVIDIA L4 24GB PCIe Accelerator for HPE

NVIDIA RTX A1000 8GB PCIe Accelerator for HPE

I/O topology

Network adapters HPE lists

7 power supplies, 800–3,200 W

Run it, secure it, choose the OS

Management

Security

Operating systems

How the DL340e Gen12 compares with its family

Four builds that suit the DL340e Gen12

Ceph or object node with rear flash

Maximum-capacity backup repository

Data-lake node with an NVIDIA L4

16-bay file server on one controller

When a refurbished ProLiant makes more sense

HPE ProLiant DL380 Gen10 Plus

HPE ProLiant DL385 Gen10 Plus

HPE ProLiant DL380 Gen10

HPE ProLiant Compute DL340e Gen12 specifications

Chassis & cooling

Processor

Memory

Storage

Expansion & networking

Accelerators

Power

Ports, video & support

DL340e Gen12 questions, answered from the documentation

Where these figures come from

Buy & configure

Storage guides

Plan the deployment

Support & lifecycle

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