LSI Corporation
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12Gb/s MegaRAID SAS Software User Guide
March 2014
Chapter 9: Configuration
Changing Power Settings
Figure 165 Set Adjustable Task Rates Menu
3.
Enter changes, as needed, to the following task rates:
—
Rebuild Rate
. Enter a number from 0 to 100 to control the rate at which a rebuild will be performed on a
drive when one is necessary. The higher the number, the faster the rebuild will occur (and the system I/O rate
may be slower as a result).
—
Patrol Rate
. Enter a number from 0 to 100 to control the rate at which patrol reads will be performed. Patrol
read monitors drives to find and resolve potential problems that might cause drive failure. The higher the
number, the faster the patrol read will occur (and the system I/O rate may be slower as a result).
—
Background Initialization (BGI) Rate
. Enter a number from 0 to 100 to control the rate at which virtual
drives are initialized “in the background.” Background initialization establishes mirroring or parity for a RAID
virtual drive while allowing full host access to the virtual drive. The higher the number, the faster the
initialization will occur (and the system I/O rate may be slower as a result).
—
Check Consistency Rate
. Enter a number from 0 to 100 to control the rate at which a consistency check is
done. A consistency check scans the consistency data on a fault tolerant virtual drive to determine if the data
has become corrupted. The higher the number, the faster the consistency check is performed (and the
system I/O rate may be slower as a result).
—
Reconstruction Rate
. Enter a number from 0 to 100 to control the rate at which reconstruction of a virtual
drive occurs. The higher the number, the faster the reconstruction occurs (and the system I/O rate may be
slower as a result).
4.
Click
Ok
to accept the new task rates.
5.
When the warning message appears, click
OK
to confirm that you want to change the task rates.
9.5
Changing Power Settings
The RAID controller includes Dimmer Switch technology that conserves energy by placing certain unused drives into
Power-Save mode. In Power-Save mode, the drives use less energy, and the fan and the enclosure require less energy
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