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HP 166207-B21 - Smart Array 5302/32 RAID Controller Reference Manual Page 72

Smart array controllers configuring arrays.
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At the medium setting, rebuilding occurs for half of the time, and normal system operations occur for
the rest of the time.
At the high setting, the rebuild takes precedence over all other system operations.
If the logical drive is part of an array that has an online spare, rebuilding begins automatically when
drive failure occurs. If the array does not have an online spare, rebuilding begins when the failed
physical drive is replaced.
Syntax:
<target> modify rp=high|medium|low|?
where <target> is a controller.
Example command:
=> ctrl slot=3 modify rp=high
Changing the Expand Priority setting
The Expand Priority setting determines the urgency with which the controller treats an internal command to
expand an array.
At the low setting level, normal system operations take priority over an array expansion.
At the medium setting, expansion occurs for half of the time, and normal system operations occur for
the rest of the time.
At the high setting, the expansion takes precedence over all other system operations.
Syntax:
<target> modify ep=high|medium|low|?
where <target> is a controller.
Example command:
=> ctrl slot=3 modify ep=high
Changing the surface scan delay time
The setting for the surface scan delay determines the time interval for which a controller must be inactive
before a surface scan analysis is started on the physical drives that are connected to it.
Surface scan analysis is an automatic background process that ensures that you can recover data if a
drive failure occurs. The scanning process checks physical drives in fault-tolerant logical drives for bad
sectors, and in RAID 5 or RAID 6 (ADG) configurations, it also verifies the consistency of parity data.
Syntax:
<target> modify ssd=#
where <target> is a controller and # is a number between 1 and 30. This number determines the delay
time in seconds, but you do not need to include units with the command.
Example command:
=> ctrl sn=P56350D9IP903J modify ssd=3
Re-enabling a failed logical drive
If a logical drive has failed and the data on it is invalid or non-recoverable, you can re-enable the logical
drive so that it can be reused. This process preserves the structure of the logical drive and merely deletes
HP Array Configuration Utility 72

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