HP NetRAID-4M Controller - Manual (Page 226)

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Command Line Interface User’s Guide
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Scrubbing a RAID-5 Set
The CLI allows you to scrub a RAID-5 set. Scrubbing a RAID-5 set
recalculates and replaces, if necessary, the parity information. You
use the
container scrub command to scrub a RAID-5 set.
To work with scrubbing a RAID-5 set, you must understand:
■ The RAID-5 set scrub attributes that you can specify
■ How to scrub a RAID-5 set
The following sections discuss each of these topics.
Understanding the RAID-5 Set Scrub Attributes You can Specify
You use the container scrub command to scrub a RAID-5 set.
Before scrubbing a RAID-5 set, consider the following attributes you
can specify:
■ I/O delay
■ No repair
■ Wait
Specifying the I/O Delay When Scrubbing a RAID-5 Set
The i/o delay attribute indicates the number of milliseconds the
controller waits between the I/O operations required to scrub the
redundant container. The I/O delay value is not preserved between
operating system reboots. Valid values are 0 through 100.
In the following example, the container scrub command with
the /io_delay switch sets the delay to 10 milliseconds.
HPN0> container scrub /io_delay=10 2
Executing: container scrub /io_delay=10 2
Specifying No Repair when Scrubbing a RAID-5 Set
The no repair attribute indicates if the scrub operation repairs
errors if they are encountered.
In the following example, the container scrub command with
the /no_repair switch repairs errors if they are encountered.