Cisco UCS User Manual - Page 45

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Cisco UCS User Manual
Chapter 7
Configuring RAID Levels
Note
The common parameters, except for total size, are the default values for the controller.

Single-Level RAID Configuration

To configure single level RAID, follow these steps:
Step 1
From the RAID drop-down list, select a RAID level (0 or 1 or 5 or 6).
The Drive Groups pane appears with a list of physical disks and drive groups. For more information
about a physical disk, hover the cursor over the physical disk until the tooltip is displayed.
Step 2
From the Physical Disks list, select the physical disks that you want to include in the Drive Groups list.
Table 7-5
Table 7-5
RAID Level
RAID 0
RAID 1
RAID 5
RAID 6
Step 3
Click Create Drive Group.
Note
The selected physical disks are included in the Drive Groups list.
Note
Step 4
From the Physical Disks list, choose a drive to be a hot spare drive or a standby drive.
Step 5
From the Stripe Size list, choose a stripe size for the RAID level.
Step 6
From the Read Policy list, choose a read policy for the RAID level.
Step 7
From the Write Policy list, choose a write policy for the RAID level.
Step 8
From the Cache Policy list, choose a cache policy for the RAID level.
Step 9
In the Size (MB) text field, enter the size of the logical disk in MB.

Nested RAID Configuration

Nested RAID levels have primary and secondary RAID levels. You need to create a minimum of two
drive groups in nested RAID levels and the drive groups should have the same number of physical disks.
To configure nested RAID levels, follow these steps:
OL-32096-01
displays the minimum number of physical disks required for each of the RAID levels.
Minimum Number of Required Physical Drives
The Create Drive Group button remains disabled until the minimum number of physical disks
for a RAID level is selected.
The Delete Drive Group button remains disabled until a drive group is created.
Number of Physical Disks Required
1
2
3
4
Cisco UCS Server Configuration Utility, Release 5.0
RAID Configuration
7-5