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Cisco UCS C240 M6

CurrentServers2U rack
Cisco UCS C240 M62U rack28 × SFF 2.5" bays

The Cisco UCS C240 M6 is a 2U 2-socket enterprise rack server powered by 3rd Gen Intel Xeon Scalable processors. Engineered for storage-demanding applications, big data, virtualization, and GPU workloads, it supports up to 28 NVMe/SAS drives and up to 8 PCIe Gen 4 expansion slots under Cisco Intersight management.

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Specifications

BrandCisco
FamilyUCS C-Series
Form factor2U rack
ReleasedApr 2021
ProcessorUp to 2x 3rd Gen Intel Xeon Scalable processors up to 40 cores each (up to 270W TDP)
Memory32x DDR4 DIMM slots supporting up to 8TB (including Intel Optane Persistent Memory 200 Series)
Drive baysUp to 28x 2.5-inch SAS/SATA/NVMe SSDs or up to 12x 3.5-inch SAS/SATA HDDs, plus internal M.2
Expansion slotsUp to 8x PCIe Gen 4 slots plus dedicated OCP 3.0 slot; supports up to 2x double-wide GPUs
NetworkOCP 3.0 slot and PCIe Cisco VIC adapters supporting 25GbE, 40GbE, and 100GbE
Power supplyDual redundant hot-swap power supplies up to 2300W
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 C240 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 (check the fit list)

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 C240 M6.

Equivalent models from other brands

FAQ

How many PCIe Gen 4 slots are available on the C240 M6?

The C240 M6 offers up to 8 PCIe Gen 4 slots across three riser assemblies plus an OCP 3.0 slot.

What GPU acceleration does the C240 M6 support?

It supports up to 2 double-wide or 5 single-wide PCIe graphics accelerators.

Buying or selling UCS C240 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