C-1
Cisco UCS C420 Server Installation and Service Guide
OL-27640-01
A P P E N D I X
C
RAID Controller Considerations
This appendix provides RAID controller information, and it includes the following sections:
•
Supported RAID Controllers and Required Cables, page C-1
•
Supercap Power Modules (RAID Backup Units), page C-2
•
Mixing Drive Types in RAID Groups, page C-2
•
RAID Controller Cabling, page C-2
•
Restoring RAID Configuration After Replacing a RAID Controller, page C-6
•
For More Information, page C-6
Supported RAID Controllers and Required Cables
This server supports the RAID controller options and cable requirements shown in
Table C-1
.
Note
Do not mix controller types in the server.
Table C-1
Cisco UCS C420 Server Supported RAID Options
Controller
Style
Maximum
Drives
Optional
SCPM?
RAID Levels
Required Cables
1
1. The number and type of cables vary, depending on which type of transition card is used and how many controllers are used.
See also
RAID Controller Cabling, page C-2
.
LSI MegaRAID
SAS 9271CV-8i
PCIe
8 internal
2
or 16 internal
with expander
3
2. When using the nonexpander-style transition card, each controller can support 8 drives; you can install two controllers and
two nonexpander transition cards to control a total of 16 drives.
3. When using two expander-style transition cards, one controller can control 16 drives.
Yes
0, 1, 5, 6, 10,
50, 60
•
One controller with one nonexpander:
1 UCSC-CABLE-S + 1 UCSC-CABLE-L
•
Two controllers with two nonexpanders:
2 UCSC-CABLE-S + 2 UCSC-CABLE-L
•
One controller with two expanders:
2 UCSC-CABLE-S
LSI MegaRAID
SAS 9286CV-8e
PCIe
128 external
Yes
0, 1, 5, 6, 10,
50, 60
Cisco does not sell the cables for external drives.