C-2
Cisco UCS C240 M4 Server Installation and Service Guide
OL-32474-01
Appendix C RAID Controller Considerations
Supported RAID Controllers and Required Cables
Supported RAID Controllers and Required Cables
This server supports the RAID controllers and cable requirements shown in Table C-1.
Caution In a SFF 8-drive server, do not use the embedded software RAID controller and a hardware RAID
controller card to control the front-facing drives at the same time. This combination is not supported and
could result in data loss. You can use the embedded software RAID controller to control internal SSD boot
drives (SFF 24-drive and LFF 12-drive server versions only) while you use a hardware RAID controller
card to control the front-facing drives.
Note See Support Matrix For Cisco UCS C240 M4 Server RAID Controllers, page C-4 for information about
controller support by server version and drive type.
Table C-1 Cisco UCS C240 M4 RAID Options
Controller Style
Supported Server Version/
Maximum Front-Facing Drives
Controlled SCPM RAID Levels Required Cables
Embedded RAID
(PCH SATA)
On
board
• SFF 8-drives/no expander:
8 internal SATA drives
No 0, 1, 5
1
, 10
1. Embedded RAID 5 support requires an optional RAID 5 key module.
• SFF 8-drives/no expander:
Cable and required SATA
interposer board bundled as
UCSC-IP-PCH-C240M4=
Cisco UCS 12G SAS
Modular RAID
Controller
This controller can be
ordered with modular
flash-based write
cache (FBWC)
options: 1 GB, 2 GB,
or 4 GB.
PCIe
• SFF 8-drives/no expander:
8 internal drives
• SFF 16-drives/expander:
16 internal drives
• SFF 24-drives/expander:
24 internal drives
• LFF 12-drives/expander:
12 internal drives
Yes
2
2. SCPM = SuperCap power module (RAID backup unit). See RAID Backup Units, page C-6.
Variable by cache
size:
• No cache:
0, 1, 10
• 1GB, 2GB, or
4GB cache:
0, 1, 5, 6, 10, 50,
60
• SFF 8-drives/no expander:
(
UCS-240CBLMR8=)
• SFF 16 drives/expander:
(
UCS-240CBLMR16=)
• SFF 24 drives/expander:
(
UCS-240CBLMR24=)
• LFF 12 drives/expander:
(
UCS-240CBLMR12=)
Cisco UCS 12G SAS
Modular HBA
Note: See also
Write-Cache Policy
for Cisco 12G SAS
Modular RAID
Controller, page C-3.
PCIe
• SFF 8-drives/no expander:
8 internal drives
• SFF 16-drives/expander:
16 internal drives
• SFF 24-drives/expander:
24 internal drives
• LFF 12-drives/expander:
12 internal drives
No Non-RAID
• SFF 8-drives/no expander:
(
UCS-240CBLMR8=)
• SFF 16 drives/expander:
(
UCS-240CBLMR16=)
• SFF 24 drives/expander:
(
UCS-240CBLMR24=)
• LFF 12 drives/expander:
(
UCS-240CBLMR12=)
Cisco UCS SAS
9300-8e HBA
Note: See also Cisco
UCS SAS 9300-8e
HBA Considerations,
page C-4.
PCIe
• All server versions
8 external SAS+SATA
ports, controlling up to
1024 non-RAID external
drives
No Non-RAID
• External drive cables are not
sold by Cisco.
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