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RAID Controller Considerations
This appendix provides RAID controller information, and it includes the following sections:
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Supported RAID Controllers and Required Cables
This server supports the RAID controller options and cable requirements shown in
Do not mix controller types in the server.
Note
Table C-1
Cisco UCS C420 Server Supported RAID Options
Controller
Style
LSI MegaRAID
PCIe
SAS 9271CV-8i
LSI MegaRAID
PCIe
SAS 9286CV-8e
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
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.
OL-27640-01
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
Maximum
Optional
Drives
SCPM?
2
8 internal
Yes
or 16 internal
3
with expander
128 external
Yes
C-2.
A P P E N D I X
RAID Levels
Required Cables
0, 1, 5, 6, 10,
•
One controller with one nonexpander:
50, 60
1 UCSC-CABLE-S + 1 UCSC-CABLE-L
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Two controllers with two nonexpanders:
2 UCSC-CABLE-S + 2 UCSC-CABLE-L
One controller with two expanders:
•
2 UCSC-CABLE-S
0, 1, 5, 6, 10,
Cisco does not sell the cables for external drives.
50, 60
Cisco UCS C420 Server Installation and Service Guide
C
Table
C-1.
1
C-1
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