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Purpose of This Document
This document gives an overview of RAID technology and describes the various RAID levels, as well as the RAID
levels supported on Cisco UCS
Integrated Management Controller (Cisco IMC), including creating RAID volumes and hot spares and replacing a
drive. In addition, it discusses how to migrate the existing RAID level using the WebBIOS utility and how to use the
LSI MegaCLI utility.
RAID Overview
A redundant array of independent disks (RAID) is a group, or array, of independent physical drives that provides
high performance and fault tolerance. The RAID drive group appears to the host computer as either a single unit or
multiple virtual units. I/O is expedited because several drives can be accessed simultaneously.
RAID drive groups provide greater data storage reliability and fault tolerance than single-drive storage systems.
Data loss resulting from a drive failure can be prevented by using the remaining drives to reconstruct missing data.
RAID has become popular because it improves I/O performance and increases storage subsystem reliability.
RAID Levels Supported by Cisco UCS C220/C240 M3 Rack Servers
The RAID levels supported on any Cisco UCS C-Series server vary by RAID controller and can be verified in Cisco
IMC.
Example: RAID levels supported on two different controllers.
Server
C220/ C240 M3
Verifying the Supported RAID Levels in Cisco IMC
●
Log in to Cisco IMC, navigate to the Storage tab, and click Create Virtual Drive from Unused Physical
Drives. The supported RAID levels can be seen in the drop-down menu next to "RAID Level" (Figure 1).
Figure 1.
© 2014 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public.
®
C220 and C240 M3 Rack Servers. It also describes how to work with the Cisco
Controller
Cisco UCS RAID SAS 2008M-8i Mezzanine Card
LSI MegaRAID SAS 9271CV-8i
Verifying the Supported RAID Levels
Supported RAID Levels
0, 1, 1E, 5, 10, 50
0, 1, 5, 6, 10, 50, 60
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