Dell PowerEdge R6525
Dell EMC's two-socket 1U AMD rack server: two 2nd or 3rd Gen AMD EPYC (7002/7003) processors with up to 64 cores each, 32 DDR4-3200 DIMMs, up to 3 PCIe Gen4 slots and up to 12 NVMe drives (10 front + 2 rear). Aimed at dense virtualization, VDI, HPC and databases.
Memory
- Slots
- 32 DDR4 DIMM (16 per CPU, 8 channels x 2 DIMMs), 288-pin
- RDIMM
- 8 GB (1R), 16/32/64 GB (2R), 3200 MT/s; max 2 TB (1 TB with one CPU)
- LRDIMM
- 128 GB 4R (3200 MT/s) or 8R (2666 or 3200 MT/s); max 4 TB (2 TB with one CPU)
- Speed
- 1 DPC 3200 MT/s, 2 DPC 2933 MT/s; the 128 GB 8R 2666 MT/s LRDIMM runs 2666 MT/s at both
- Population
- White-tab sockets first; both CPUs populated identically; odd DIMM counts allowed; no UDIMMs; mixed DIMM capacities not supported
- Note
- The Technical Guide intro says 2 TB max, but its tables, the Technical Specifications and the spec sheet give 4 TB with 128 GB LRDIMMs
Storage
- Front bays
- 4 x 3.5" SAS/SATA, 8 x 2.5" SAS/SATA, or 10 x 2.5" SAS/SATA/NVMe, hot-plug
- Rear bays
- Optional 2 x 2.5" SAS/SATA/NVMe module (10 + 2, or 4 x 3.5" + 2); it takes the riser 1/2 area, leaving slot 3
- NVMe
- Up to 10 front + 2 rear U.2 PCIe Gen4
- Internal RAID/HBA
- PERC 10.5: H345, H745, HBA345; PERC 11: H755N, HBA355i; the front PERC module mounts at the front or rear of the backplane
- Software RAID
- S150 (SATA, NVMe)
- External
- PERC H840, HBA355E, 12 Gbps SAS HBA; 12Gb MD-series JBODs, USB tape
- Boot
- BOSS-S2 (rear, hot-plug) or BOSS-S1 adapter card: 2 x M.2 SATA SSD with hardware RAID
- IDSDM
- Optional internal dual SD module, 16/32/64 GB (second card for redundancy)
- Drive types
- 2.5" SAS 10K 300 GB-2.4 TB, 15K 300-900 GB; SAS SSD 400 GB-3.84 TB; SATA SSD 120 GB-3.84 TB; NVMe 960 GB-15.36 TB; 3.5" SAS/SATA 7.2K 1-10 TB
Graphics
- Onboard
- Matrox G200, 16 MB frame buffer; rear VGA up to 1920 x 1200 at 60 Hz
- Accelerators
- NVIDIA T4 16 GB or A2 16 GB (75 W single-width): up to 3 low-profile (slot order 2, 1, 3) or 2 full-height (slots 2, 1)
- Restriction
- T4/A2 in slot 3 only with the 10 x 2.5" chassis; HPR/VHP fans and 30 C max ambient with a GPU
Expansion
- Slot 1
- R1a: x16 full-height 3/4-length (CPU1); R2a: x16 low-profile half-length (CPU1)
- Slot 2
- R2a: x16 low-profile half-length (CPU2); R4c + R4d: x16 full-height 3/4-length (CPU2)
- Slot 3
- R3a: x16 low-profile half-length (CPU2)
- Riser configs
- 0 no riser; 1 R1a; 2 R2a + R3a; 4 R1a + R4c + R4d; 5 R3a; 6 R1d + R2a + R3a; 8 R1a; 9 R1a + R4c + R4d
- Other
- All PCIe Gen4, not hot-swappable; the optional DB-9 serial port card mounts like a slot filler in a riser
Networking
- LOM
- 2 x 1GbE RJ45 on a LOM card
- OCP 3.0
- 1 x OCP NIC 3.0 small-form-factor slot: 1GbE x4, 10GbE x2, 25GbE x2/x4, 50GbE x2, 100GbE x2 (Broadcom, Intel, Mellanox, QLogic, SolarFlare)
- Add-in
- PCIe NICs 1/10/25/50/100 GbE, Mellanox HDR/HDR100 VPI, Emulex/QLogic FC16/FC32/FC64 HBAs
Power
- PSU options
- 800 W Platinum mixed mode (100-240 VAC / 240 VDC); 1100 W Titanium mixed mode; 1400 W Platinum mixed mode; 1100 W -48 to -60 VDC
- Also listed
- The Technical Guide comparison table also lists Titanium 700 W and 1800 W mixed-mode AC units
- Redundancy
- Two hot-plug PSUs (60 mm form factor), 1+1 redundant, one at each side of the rear
- Fans
- Up to 4 hot-plug dual-fan modules: STD, HPR (Silver) or HPR (Gold, VHP); N+1 redundant; fan grades cannot be mixed
- Cooling
- Air, or optional processor direct liquid cooling with leak sensor (liquid: 3 dual-fan modules for one CPU, 4 for two)
- Battery
- CR2032 3.0 V lithium coin cell
Ports
- Front
- VGA, 1 x USB 2.0, iDRAC Direct (micro-AB USB), power button
- Rear
- 1 x USB 3.0, 1 x USB 2.0, VGA, iDRAC9 dedicated RJ45, 2 x 1GbE LOM, OCP 3.0 slot, system ID button, optional DB-9 serial
- Internal
- 1 x USB 3.0
Physical
- Form factor
- 1U rack
- Dimensions
- 42.8 mm H x 482 mm W (434 mm without ears); bezel 35.84 mm deep (22.0 mm ear depth without bezel)
- Depth
- Ear to rear wall 700.53 mm (8 x 2.5") or 751.48 mm (4 x 3.5" / 10 x 2.5"); ear to PSU handle 736.27 / 787.05 mm
- Weight
- 21.8 kg (4 x 3.5"), 19.2 kg (8 x 2.5"), 21.8 kg (10 x 2.5"), maximum
- Operating temp
- 10-35 C (ASHRAE A2); A3 (5-40 C) and A4 (5-45 C) with configuration restrictions
Management
- BMC
- iDRAC9 with Lifecycle Controller, iDRAC RESTful API with Redfish, iDRAC Direct, optional Quick Sync 2 (BLE/wireless)
- Software
- OpenManage Enterprise, Power Manager plugin, OpenManage Mobile, iDRAC Service Module; integrations for Microsoft System Center, VMware vCenter, Red Hat Ansible, BMC TrueSight, ServiceNow; connections for IBM Tivoli, Micro Focus, Nagios
- Security
- TPM 1.2/2.0, TCM 2.0 optional; cryptographically signed firmware, Secure Boot, Secure Erase, Silicon Root of Trust, System Lockdown, AMD SME and SEV
- Bezel
- Optional LCD bezel or security bezel
Operating systems
- Supported
- Canonical Ubuntu Server LTS, Citrix XenServer / Hypervisor, Microsoft Windows Server with Hyper-V, Red Hat Enterprise Linux, SUSE Linux Enterprise Server, VMware ESXi / vSAN
Processors
- AMD EPYC 7773X
- AMD EPYC 7573X
- AMD EPYC 7473X
- AMD EPYC 7373X
- AMD EPYC 7763
- AMD EPYC 7H12
- AMD EPYC 75F3
- AMD EPYC 7742
- AMD EPYC 7713P
- AMD EPYC 7713
- AMD EPYC 7702
- AMD EPYC 7663
- AMD EPYC 7662
- AMD EPYC 7643
- AMD EPYC 7642
- AMD EPYC 7552
- AMD EPYC 7543P
- AMD EPYC 7543
- AMD EPYC 7542
- AMD EPYC 7532
- AMD EPYC 7513
- AMD EPYC 7502
- AMD EPYC 74F3
- AMD EPYC 7452
- AMD EPYC 7443P
- AMD EPYC 7443
- AMD EPYC 7413
- AMD EPYC 7402
- AMD EPYC 7352
- AMD EPYC 7343
- AMD EPYC 7313P
- AMD EPYC 7313
- AMD EPYC 7302
- AMD EPYC 72F3
- AMD EPYC 7262
- AMD EPYC 7282
- AMD EPYC 7272
- AMD EPYC 7232P
- AMD EPYC 7F72
- AMD EPYC 7F52
- AMD EPYC 7F32
- AMD EPYC 7252