CISCO M6 C240 SFF Base Knowledge
This Cisco C240 M6 SFF Chassis is different than the LFF Rack Server. The Small Form Factor Rack Server has 4 different configuration options to choose from. Those options are below.
The C240 M6 SFF server can be ordered as follows:
- UCSC-C240-M6S (12-drive SAS/SATA and 4 optionally of those can be NVMe)
- UCSC-C240 M6SX (24-drive SAS/SATA backplane and optionally 4 of those can be NVMe)
- UCSC-C240-M6N (12-drive NVMe only)
- UCSC-C240-M6SN (24-drive NVMe only)
- There is no RAID support for NVMe drives.
- In a configuration with a SATA Interposer and AHCI control, only 8 SATA-only drives (8 internal in drive bays 1-8) can be installed (no RAID support).
Option 1 UCSC-C240-M6S | 12 SFF + 4 Rear Drives
The C240 M6 SFF Rack Server is configured with 12 SFF front drives. The drives can be a mix of SAS/SATA and NVMe (up to 4 NVMe drives) and optionally up to 4 SAS/SATA/NVMe rear drives. The DVD drive is optional.
You can order a DVD drive only for the UCSC-C240-M6S (12-HDD backplane version of the server).
Risers Supported in Option 1
- Riser 1 option:
- Riser 1A (I/O-centric, CPU1 control)
- Riser 2 option:
- Riser 2A (always I/O-centric, CPU2 control)
- Riser 3 options:
- Riser 3A (I/O-centric, CPU2 control)
- Riser 3B (storage-centric, CPU2 control)
- Riser 3C (for GPU, CPU2 control)
Option 2 UCSC-C240-M6SX | 24 SFF + 4 Rear Drives
The C240 M6 SFF Rack Server is configured with 24 front drives. The drives can be a mix of SAS/SATA and NVMe (up to 4 NVMe drives) and optionally 4 SAS/SATA rear drives.
Risers Supported in Option 2
- Riser 1 option:
- Riser 1A (I/O-centric, CPU1 control)
- Riser 1B (storage-centric) When using AHCI in the server, only SATA SSDs are supported in the rear bays.
- Riser 2 option:
- Riser 2A (always I/O-centric, CPU2 control)
- Riser 3 options:
- Riser 3A (I/O-centric, CPU2 control)
- Riser 3B (storage-centric, CPU2 control)
- Riser 3C (for GPU, CPU2 control)
Option 3 UCSC-C240-M6N | 12 NVMe + 2 Rear Drives
The C240 M6 SFF Rack Server is configured with up to 12 NVMe front drives and optionally two NVMe rear drives. The drives are all NVMe.
Risers Supported in Option 3
- Riser 1 option:
- Riser 1A (I/O-centric, CPU1 control)
- Riser 1B (storage-centric) When using AHCI in the server, only SATA SSDs are supported in the rear bays.
- Riser 2 option:
- Riser 2A (always I/O-centric, CPU2 control)
- Riser 3 Not Supported:
Option 4 UCSC-C240-M6SN | 24 NVMe
The C240 M6 SFF Rack Server is configured with 24 SFF NVMe front drives and optionally two NVMe rear drives. The drives are all NVMe drives.
Risers Supported in Option 4
- Riser 1 option:
- Riser 1A (I/O-centric, CPU1 control)
- Riser 1B (storage-centric) When using AHCI in the server, only SATA SSDs are supported in the rear bays.
- Riser 2 option:
- Riser 2A (always I/O-centric, CPU2 control)
- Riser 3 Not Supported:
Memory
This Rack system can support RDIMM, LRDIMM, and Intel Optane PMem.
Any empty DIMM slot must be populated with a DIMM blank to maintain proper cooling airflow.. 256 GB DIMMs cannot be combined with GPU cards.
Please read the manual for more details about memory modes, mixing, and limitations for the DIMMS in the Cisco C240 M6 SFF Rack Server options.
Max Memory:
8 TB: 32 x 256 GB DDR4 DIMMs1
12 TB: 16 x 256 GB DDR4 DIMMs1 and 16 x 512 GB Intel® Optane™ Persistent Memory Modules (PMem)
DIMM Mixing:
- Mixing different types of DIMM (RDIMM with any type of LRDIMM or 3DS LRDIMM with non-3DS LRDIMM) is not supported within a server.
- Mixing RDIMM with RDIMM types is allowed if they are mixed in same quantities, in a balanced configuration.
- Mixing 16 GB, 32 GB, and 64 GB RDIMMs is supported.
- 128 GB and 256 GB LRDIMMs cannot be mixed with other RDIMMs
- 128 GB non-3DS LRDIMMs cannot be mixed with 256 GB 3DS LRDIMMs
- DIMM mixing is not allowed when PMem are installed; in these cases, all DIMMs must be the same type and size.
Drive Options
The following list summarizes how drives are controlled on the server:
- Servers with only SATA drives are controlled by the Intel C621 PCH through the SATA Interposer (AHCI), or
- SAS/SATA drives are controlled through one Cisco 12G RAID controller, or
- SAS/SATA drives are controlled through one or two Cisco 12G SAS pass-through HBAs
- PCIe drives are controlled directly from the CPUs
AHCI with SATA Interposer |UCSC-SATAIN-220M6
(8 internal drives in drive bays 1-8 and 2 SATA M.2 drives)
You can choose only SATA SSDs or M.2 SATA drives when using AHCI with a SATA Interposer.
Order one or two matching M.2 SATA SSDs along with a boot-optimized RAID controller (UCS-M2-HWRAID). The UCS-M2-HWRAID boot-optimized RAID controller supports RAID 1 and JBOD mode. You cannot mix M.2 SATA SSD capacities.
The default configuration is Advanced Host Control Interface (AHCI), which supports SATA-only drives in a non-RAID configuration. A maximum of 8 SATA drives are supported with AHCI and this configuration requires a SATA interposer board, which plugs directly into the drive backplane. The SATA Interposer supports drives in slots 1-8.
Cisco 12G SAS RAID Controller
This RAID controller supports up to 16 SAS or SATA drives (the UCSC-C240-M6S server has 12 in front and 2 in rear) operating at 3 Gbs, 6 Gbs, and 12Gbs. It includes a SuperCap for a 4 GB flash-back write cache (FBWC) and supports RAID 0, 1, 5, 6, 10, 50, 60, JBOD mode, and SRAID0. The RAID controller plugs into a dedicated slot.
NOTE: 64 RAID groups (virtual drives) are supported with this RAID controller.
Cisco M6 12G SAS RAID Controller with 4 GB FBWC |UCSC-RAID-240M6 | UCSC-RAID-M6SD
This RAID controller has two options and supports 16 and 28 SAS or SATA drives.
(The UCSC-C240-M6S server has 12 front drives and 4 rear drives |UCSC-RAID-240M6)
(The UCSC-C240-M6SX server has 24 front drives and 4 rear drives |UCSC-RAID-M6SD).
It includes a SuperCap for a 4 GB flash-back write cache (FBWC) and supports RAID 0, 1, 5, 6, 10, 50, 60, JBOD mode, and SRAID0. The RAID controller plugs into a dedicated slot.
NOTE: 64 RAID groups (virtual drives) are supported with this RAID controller.
Cisco 12G SAS HBA |UCSC-SAS-240M6
This HBA supports up to 16 SAS or SATA drives (the UCSC-C240-M6S server has 12 front drives and 2 rear drives and the UCSC-C240-M6SX server has 24 front drives and 2 or 4 rear drives) operating at 3 Gbs, 6 Gbs, and 12Gbs. It supports JBOD or pass-through mode (not RAID) and plugs directly into the drive backplane. Two of these controllers are required to control 24 front drives and 2 or 4 rear drives.
NOTE:
- This RAID controller is used in the UCSC-C240-M6S and UCSC-C240-M6SX servers
- SAS HBA supports 28 drives and requires 2 quantities.
Expansion Slots
With 4 different options in this Rack Server, you must look carefully for which riser configuration is supported with each. Below you will find all the riser details.
| Product ID (PID) |
Description |
| UCSC-RIS1A-240M6 (default riser) |
C240 M6 Riser1A (controlled with CPU1)
- PCIe Slot 1 (bottom slot): full height, 3/4 length, x8, NCSI
- PCIe Slot 2 (middle slot): full height, full length (GPU Card), x16, NCSI
- PCIe Slot 3 (top slot): full height, full length, x8
|
| UCSC-RIS1B-240M6 (storage riser) |
C240 M6 Riser1B (controlled with CPU1)
- Slot 1 is reserved
- Slot 2 (middle slot, 2.5” drive bay 102), x4
- Slot 3 (top slot, 2.5” drive bay 101), x4
|
| UCSC-RIS2A-240M6 (default riser) |
C240 M6 Riser2A (controlled with CPU2)
- Slot 4 (bottom slot): full height, 3/4 length, x8, NCSI
- Slot 5 (middle slot): full height, full length (GPU Card), x16, NCSI
- Slot 6 (top slot): full height, full length, x8
|
| UCSC-RIS3A-240M6 (default riser) |
C240 M6 Riser3A (controlled with CPU2)
- Slot 7 (bottom slot): full height, full length, x8
- Slot 8 (top slot): full height, full length, x8
|
| UCSC-RIS3B-240M6 (storage riser) |
C240 M6 Riser 3B (controlled with CPU2)
- Slot 7 (bottom slot, 2.5” drive bay 104), x4
- Slot 8 (top slot, 2.5” drive bay 103), x4
|
| UCSC-RIS3C-240M6 (GPU riser) |
C240 M6 Riser 3C (controlled with CPU2)
- Slot 7 supports one full-height, full-length, double-wide GPU (PCIe slot 7 only), x16
- Slot 8 blocked by double-wide GPU
|
Riser Expansion Notes:
- Riser filler blank UCSC-FBRS2-C240M6 for riser 2 and UCSC-FBRS3-C240M6 for riser 3 is auto included, if riser 2 or riser 3 are not selected.
- CBL-RSASR1B-240M6 is auto included with selection of riser 1 and Raid controller (UCSC-SAS-240M6)
- CBL-RSASR3B-240M6 is auto included with selection of riser 3 and Raid controller (UCSC-SAS-240M6 or UCSC-RAID-M6SD).
GPU
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.
Riser Slots for GPUs:
- Riser 1B does not accept GPUs
- Riser 3A does not accept GPUs
- Riser 3B does not accept GPUs
- The server supports one full-height, full-length, double-wide GPU (PCIe slot 7 only) in Riser 3C. The UCSC-C240-M6S and UCSC-C240-M6SX servers supports one full-height, full-length, double-wide GPU (PCIe slot 7 only) in Riser 3C. The UCSC-C240-M6SN and UCSC-C240-M6N servers do not support any GPU in slot 7 of Riser 3C
- GPUs cannot be mixed
- All GPU cards must be procured from Cisco as there is a unique SBIOS ID required by CIMC and UCSM
| GPU Product ID (PID) |
PID Description |
Card Size |
Max GPU per Node |
Riser Slot Compatibility |
|
|
|
|
Riser 1A (Gen 4) |
Riser 1B |
Riser 2 (Gen 4) |
Riser 3A Gen 4) |
Riser 3B |
Riser 3C |
| UCSC-GPU-A10 |
TESLA A10, PASSIVE, 150W, 24GB |
Single-wide |
5 |
slot 2&3 |
N/A |
slot 5&6 |
N/A |
N/A |
slot 7 |
| UCSC-GPU-A30 |
TESLA A30, PASSIVE, 180W, 24GB |
Double -wide |
3 |
slot 2 |
N/A |
slot 5 |
N/A |
N/A |
slot 7 |
| UCSC-GPU-A40 |
TESLA A40 RTX, PASSIVE, 300W, 48GB |
Double -wide |
3 |
slot 2 |
N/A |
slot 5 |
N/A |
N/A |
slot 7 |
| UCSC-GPU-A100-80 |
TESLA A100, PASSIVE, 300W, 80GB |
Double-wide |
3 |
slot 2 |
N/A |
slot 5 |
N/A |
N/A |
slot 7 |
| UCSC-GPU-A16 |
NVIDIA A16 PCIE 250W 4X16GB |
Double -wide |
3 |
slot 2 |
N/A |
slot 5 |
N/A |
N/A |
slot 7 |
Riser 1B does not accept GPUs 3.
Riser 3A does not accept GPUs 4.
Riser 3B does not accept GPUs 5.
The server supports one full-height, full-length, double-wide GPU (PCIe slot 7 only) in Riser 3C. The UCSC-C240-M6S and UCSC-C240-M6SX servers supports one full-height, full-length, double-wide GPU (PCIe slot 7 only) in Riser 3C. The UCSC-C240-M6SN and UCSC-C240-M6N servers do not support any GPU in slot 7 of Riser 3C
Power & Fan Units
Supports 2 Power Supply Units and 6 Fans. In a server with two power supplies, both power supplies must be identical.
The server is available with the following types of power supplies:
- 1050 W (AC) power supply
- 1050 W V2 (DC) power supply
- 1600 W (AC) power supply
- 2300 W (AC) power supply
Dimensions & Weight:
Height 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)
Depth 30 in. (76.2 cm)
Weight
- no rail kit: 0 HDD, 0 CPU, 0 DIMM, and 1 2300 W power supply 35.7 lbs (16.2 kg)
- including rail kit: 0 HDD, 0 CPU, 0 DIMM, and 1 2300 W power supply 44 lbs (20 kg)
- no rail kit: 1 HDD, 1 CPU, 1 DIMM, and 1 2300 W power supply 37.6 lbs (17 kg)
- including rail kit: 1 HDD, 1 CPU, 1 DIMM, and 1 2300 W power supply 45.9 lbs (20.8 kg)
- no rail kit: 8 HDDs, 2 CPUs, 32 DIMMs, and 2 2300 W power supplies 44.71 lbs (20.28 kg)
- Including rail kit: 8 HDDs, 2 CPUs, 32 DIMMs, and 2 2300 W power supplies 49.2 lbs (22.32 kg)
- no rail kit: 0 HDD, 0 CPU, 0 DIMM, and 1 2300 W power supply 33.14 lbs (15 kg)
- including rail kit: 0 HDD, 0 CPU, 0 DIMM, and 1 2300 W power supply 41.45 lbs (18.8 kg)
- no rail kit: 1 HDD, 1 CPU, 1 DIMM, and 1 2300 W power supply 40.55 lbs (18.4kg)
- including rail kit: 1 HDD, 1 CPU, 1 DIMM, and 1 2300 W power supply 48.86 lbs (22.2 kg)
- no rail kit: 24 HDDs, 2 CPUs, 32 DIMMs, and 2 2300 W power supplies 58.8 lbs (26.7 kg)
- including rail kit: 24 HDDs, 2 CPUs, 32 DIMMs, and 2 2300 W power supplies 61.7 lbs (28 kg)
