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Cisco UCS C225 M6

CurrentServers1U rack
Cisco UCS C225 M61U rack10 × SFF 2.5" bays

The Cisco UCS C225 M6 is a 1U 2-socket rack server powered by 3rd Gen AMD EPYC processors. Designed for core-dense enterprise virtualization, software-defined storage, and cloud infrastructure, it features up to 128 cores in 1U, PCIe Gen 4 interconnects, and native cloud operations through Cisco Intersight.

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Specifications

BrandCisco
FamilyUCS C-Series
Form factor1U rack
ReleasedJun 2021
ProcessorUp to 2x 3rd Gen AMD EPYC 7003 series processors up to 64 cores each (up to 280W TDP)
Memory32x DDR4 DIMM slots (16 per CPU) supporting up to 8TB DDR4-3200
Drive baysUp to 10x 2.5-inch SAS/SATA/NVMe SSDs, plus dual internal M.2 boot drives
Expansion slotsUp to 3x PCIe Gen 4 slots plus 1x dedicated OCP 3.0 slot
NetworkOCP 3.0 slot supporting up to 100GbE and Cisco VIC 1467 PCIe mezzanine adapters
Power supplyDual redundant hot-swap power supplies up to 1600W
ManagementCisco IMC and Cisco Intersight

Generations

Compatible parts

Hard drives

Boot devices

Memory

SSDs

GPUs

Network adapters

HBAs

Power supplies

RAID controllers

Rail kits

TPM modules

Works together

How the Cisco UCS C225 M6 connects to servers, storage and the network: 4 ways, with the parts and products on each path.

Fibre Channel SANiSCSI and NVMe/TCP over EthernetDirect-attached SASFile storage (NFS and SMB)

Fibre Channel SAN

Match the speed: 16Gb and 32Gb FC HBAs, switches and array ports work together, and each generation also runs one or two speeds below its own (a 32Gb port runs at 16Gb and 8Gb).

Adapters for the server

Switches

Storage

Optics

Fibre Channel SAN: how it fits together

iSCSI and NVMe/TCP over Ethernet

Keep the speed the same at all three points: a 25GbE server, a 25GbE switch port and a 25GbE array port. Mixed speeds work but the slowest link sets the pace.

Adapters for the server (check the fit list)

Switches

Storage

Optics

iSCSI and NVMe/TCP over Ethernet: how it fits together

Direct-attached SAS

12Gb SAS uses Mini-SAS HD (SFF-8644) connectors; older 6Gb gear uses Mini-SAS (SFF-8088). Adapter cables exist, but the link runs at the slower speed.

Adapters for the server (check the fit list)

Storage

Direct-attached SAS: how it fits together

File storage (NFS and SMB)

Front-end ports face the clients; back-end ports (on scale-out systems) connect the nodes to each other and need their own switch pair.

Adapters for the server (check the fit list)

Switches

Storage

Optics

File storage (NFS and SMB): how it fits together

Plan and size it

Check compatibility with Cisco

Before you buy, confirm the exact configuration against the vendor's own lists: firmware levels, operating systems, adapters and optics that Cisco has tested with the Cisco UCS C225 M6.

Equivalent models from other brands

FAQ

What processors power the Cisco UCS C225 M6?

The C225 M6 is powered by AMD EPYC 7003 (Milan) series processors with up to 64 cores per socket.

How many DIMMs are supported per CPU on the C225 M6?

Each AMD EPYC processor supports 16 DDR4 memory channels across 16 DIMM slots (32 total).

Buying or selling UCS C225 M6?

New, refurbished or used. Tell us the quantity and condition and we connect you with a vetted reseller in your region, usually within one working day.

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Sources