HP 166207-B21 - Smart Array 5302/32 RAID Controller Reference Manual page 68

If the operating system does not support logical drive extension, carrying out this command makes data
on the logical drive unavailable. Therefore, the CLI displays a warning prompt as a safeguard in case you
are using such an operating system. To prevent the prompt from appearing, use the forced parameter.
Example commands:
=> ctrl slot=3 ld 1 modify size=max
=> ctrl slot=4 ld 1 modify size=?
=> ctrl slot=3 ld 2 modify size=500 forced
Migrating a logical drive
This command enables you to adjust the stripe size (data block size) or RAID level of a selected logical
drive. For more information, see "Selecting a RAID method (on page 103)."
Consider the following factors before performing a migration:
•
For some RAID-level migrations to be possible, you might need to add one or more drives to the
array.
•
For migration to a larger stripe size to be possible, the array might need to contain unused drive
space. This extra space is necessary because some of the larger data stripes in the migrated array
are likely to be filled inefficiently.
IMPORTANT:
about 15 minutes per gigabyte. While this process is occurring, no other expansion,
extension, or migration can occur simultaneously on the same controller. Controllers that do
not support a battery-backed write cache do not support this process.
Syntax:
<target> modify [raid=0|1+0|1|5|6|adg|?]
[ss=8|16|32|64|128|256|default|?]
where <target> is a logical drive.
The following limitations apply to this command:
•
You cannot simultaneously query the RAID level and the stripe size of any given logical drive.
•
If you do not specify a RAID level for a query or migration, the CLI uses the existing value by default.
•
If you do not specify a stripe size, the CLI uses the default stripe size value for the RAID level that you
specify.
Example commands:
=> ctrl slot=3 ld 1 modify raid=1
=> ctrl slot=4 ld 2 modify ss=16
=> ctrl slot=2 ld 3 modify raid=5 ss=16
Using Selective Storage Presentation
The SSP feature (also known as Access Control List commands) enables you to allow only specific adapter
IDs or connection names to have access to particular logical drives. This functionality is useful for
preventing the corruption of data that can occur when different servers using different operating systems
access the same data.
Syntax:
Using SSP requires two commands:
An array expansion, logical drive extension, or logical drive migration takes
HP Array Configuration Utility 68