Current Configuration
(List below serves as quick links to each section)
Select Chassis
Select Processor Intel 3rd Gen Xeon
Select Memory
Memory Pmem
Memory Extra
Cisco C240 M6 Drive Options
Cisco C240 M6 SFF HDD Drives
Cisco C240 M6 SFF SSD Drives
Cisco C240 M6 SFF NVMe Drives
Cisco C220 M6 M.2 Drives
Cisco C240 M6 SFF Risers
Modular LAN on Motherboard (mLOM)
Virtual Interface Card (VICs)
Network Interface Cards (NICs)
Nexus Smart NIC
Host Bus Adapters (HBAs)
GPU
Security
Rail Kit
Cisco C240 M6 PSU
Select Warranty
Cisco UCS C240 M6 SFF Rack Server CTO
What's New
- (2) Intel Xeon 3rd Gen Scalable Processors
- (32) 3200MT/s DDR4 DIMMs
- Support for Intel® Optane™ Persistent Memory (PMem)
- (24) SFF SAS/SATA/NVMe only
- (2) Rear Drives SAS/SATA/NVMe
- (8) PCIe 4.0 Slots
- (5) GPU Support
- Dedicated mLOM Slot
- Dedicated Cisco 12G SAS Modular RAID controller Slot
- Embedded 2 x 10GBASE-T LAN-on-motherboard (LOM)
- (6) Hot Swap Fans
- PCIe NVMe drives are controlled directly from the CPUs
- There is no RAID support for NVMe drives.
- Cisco C220 M4 | M5 | M6 | M7
- Cisco C240 M4 | M5 | M6
(Click to View)
Ideal for:
- Artificial Intelligence (AI)
- Big Data Analytics
- Cloud Servers
- Data Analytics
- Database
- Deep Learning (DL)
- High-Performance Computing (HPC)
- Machine Learning (ML)
- Virtualization
The Cisco UCS C240 M6 Rack Server is a 2-socket, 2-Rack-Unit (2RU) rack server offering industry-leading performance and expandability. It supports a wide range of storage and I/O-intensive infrastructure workloads, from big data and analytics to collaboration. Cisco UCS C-Series M6 Rack Servers can be deployed as standalone servers or as part of a Cisco Unified Computing System (Cisco UCS) managed environment, and now with Cisco Intersight is able to take advantage of Cisco’s standards-based unified computing innovations that help reduce customers’ Total Cost of Ownership (TCO) and increase their business agility.
The server accommodates up to 12 front facing SAS-only LFF drives, up to 4 mid-plane SAS-only LFF drives, and up to 4 rear-facing SFF drives (SAS or SATA or NVMe).
If a Midplane is installed GPUs are not supported.

UCSC-C240-M6L
(12) LFF SAS/SATA Drives
(4) Midplane LFF SAS Drives
Up to (4) Rear SFF SAS/SATA/NVMe Drives
Mid Drives & GPUs cant be installed together
Risers Option
1B, 2A, 3B
View C240 M6 LFF CTO
- You can mix HDDs and SSDs as long as you keep all HDDs in their own RAID volume and all SSDs in their own RAID volume.
- You can mix SAS HDDs and SAS/SATA SSDs when using the Cisco 12G SAS RAID controller or Cisco 12G SAS HBA.
- If you order any SFF NVMe rear drives, you must also order two CPUs.
- SED drives can be mixed with non-SED drives in Table 11 on page 27
- 2.5-inch SFF NVMe drives are connected directly to the CPU, and are not managed by the RAID controller or SAS HBA.
- You cannot mix SAS/SATA with NVMe rear drives. They must be all SAS/SATA or all NVMe
- A midplane kit (PID UCSC-MPSTOM6L-KIT) is required
- If a Midplane is installed GPUs are not supported.
- Intel® VROC is only supported with Intel drives
- Intel® VROC enablement key factory pre-provisioned to BIOS - no additional licensing required.
- Small Form Factor (SFF) drive support (only)
- No battery backup (BBU) or external SuperCap needed
- Software-based solution utilizing Intel SFF NVMe direct connected to Intel CPU
- RAID 0/1/5/10 support
- Windows, Linux, VMware OS support.
- Host Tools- Windows GUI/CLI, Linux CLI.
- UEFI Support- HII Utility, OBSE.
- Intel VROC NVMe operates in UEFI mode only
UCS C240 M6 12 SFF UCSC-C240-M6S
(12) SAS/SATA Drives
(1-4) SAS/SATA/NVMe
(5-12) SAS/SATA
(2) Rear SFF SAS/SATA/NVMe
SATA Interposer installed, supports up to 8 SATA-only
Optional media drive
I/O Centric Risers
1A, 2A, 3A, 3C
Storage Centric Risers
1A, 2A, 3B, 3C
View C240 M6 SFF CTO
UCS C240 M6 24 SFF UCSC-C240-M6SX
(24) SAS/SATA/NVMe Drives
Drives (1-4) support SAS/SATA/NVMe
Drives (5-24) support SAS/SATA
Up to (2 or 4) Rear SFF SAS/SATA/NVMe Drives
I/O Centric Risers
1A, 2A, 3A, 3C
Storage Centric Risers
1B, 3B, 3C
View C240 M6 SFF CTO
UCS C240 M6 12 NVMe Drive UCSC-C240-M6N
(12) NVMe Drives
Up to (2) Rear NVMe Only
Optional media drive
I/O Centric Risers
1A, 2A
Storage Centric Risers
1B
View C240 M6 SFF CTO
UCS C240 M6 24 NVMe UCSC-C240-M6SN
(24) NVMe Drives
Up to (2) Rear NVMe Only
I/O Centric Risers
1A, 2A
Storage Centric Risers
1B
View C240 M6 SFF CTO
32 DDR4 DIMM slots: 16, 32, 64, 128 and 256 GB up to 3200 MHz Support for the Intel Optane DC persistent memory (128G, 256G, 512G). DIMM mixing is not allowed when PMem are installed; in these cases, all DIMMs must be the same type and size.
- Clock speed: 3200 MHz
- Ranks per DIMM: 1, 2, 4, or 8
- Operational voltage: 1.2 V
- Registered ECC DDR4 DIMMS (RDIMMs), Load-reduced DIMMs (LRDIMMs), or Intel® Optane™ Persistent Memory Modules (PMem).
- 4 TB: 32 x 128 GB DDR4 DIMMs
- 10 TB: 16 x 128 GB DDR4 DIMMs and 16 x 512 GB Intel® Optane™ Persistent Memory Modules (PMem).
8 PCIe 4.0 slots, 1 dedicated 12-Gbps RAID controller slot and 1 dedicated mLOM slot. With 8PCIe slots the system is able to support up to 5 A10 Single Wide GPUs. Slots 4, 5, and 6 on riser card 2A accommodate single-wide GPUs.
Riser 2 and 3 connect to CPU 2 and if they are not installed then you will need to add the Riser Filler Blanks for optimal air flow.
- Riser 2 Blank UCSC-FBRS2-C240M6
- Riser 3 Blank UCSC-FBRS3-C240M6
Not all risers are available in every server configuration option
Riser 1ASlot 1 is full-height, 3/4 length, x8, NCSI
Slot 2 is full-height, full-length, x16, NCSI
Slot 3 is full-height, full-length, x8, no NCSI
I/O-centric
Riser 1BSlot 1 is reserved
Slot 2 (drive bay 102), x4
Slot 3 (drive bay 101), x4
Supports SAS/SATA/NVMe
Storage-centric
Riser 2ASlot 4 is full-height, 3/4 length, x8
Slot 5 is full-height, full-length, x16
Slot 6 is full-height, full-length, x8
I/O-centric
Riser 3ASlot 7 is full-height, full-length, x8
Slot 8 is full-height, full-length, x8
I/O-centric
Riser 3BSlot 7 (drive bay 104), x4
Slot 8 (drive bay 103), x4
Supports SAS/SATA/NVMe
Storage-centric
Riser 3CSlot 7 supports one FH, FL, DW GPU, x16
Slot 8 blocked w/ a DW GPU is installed
GPU Support
256 GB DIMMs cannot be combined with GPU cards. When a GPU is ordered, the server comes with low-profile heatsinks PID (UCSC-HSLP-M6=) and needs to select a special air duct PID (UCSC-ADGPU-240M6=) for GPUs.
The chassis is equipped with six fans and two power supplies. In a server with two power supplies, both power supplies must be identical. Hot-pluggable, redundant 1050W AC, 1050W DC, 1600W AC, and 2300W AC
3.42 in. (8.7 cm)
Width(Not including slam latches) 16.9 in.(42.9 cm)
Width(including slam latches) 18.9 in.(48.0 cm)
Depth30 in. (76.2 cm)
with the following options and no rail kit:
- 0 HDD, 0 CPU, 0 DIMM, and 1 2400 W power supply 39.13 lbs (17.8 kg)
- 0 HDD, 0 CPU, 0 DIMM, and 1 2400 W power supply 47.44 lbs (21.5 kg)
- 1 HDD, 1 CPU, 1 DIMM, and 1 2400 W power supply 41.95 lbs (19 kg)
- 1 HDD, 1 CPU, 1 DIMM, and 1 2400 W power supply 50.26 lbs (22.8 kg)
- 12 HDDs, 2 CPUs, 32 DIMMs, and 2 2400 W power supplies 61.7 lbs (28 kg)
- 12 HDDs, 2 CPUs, 32 DIMMs, and 2 2400 W power supplies 66.75 lbs (30.3 kg)
Current Configuration
(List below serves as quick links to each section)












































