Chapter2:ConguringtheLSIMegaRAIDSettings
2-5
Item Description
Rebuild Rate The rebuild rate determines the percentage of system re-
sources that will be applied toward rebuilding a drive that
has failed. Enter a number between 1 and 100 to control
the rebuild rate.
Patrol Read
Rate
A patrol read monitors physical disks to nd and resolve
any problems that may result in disk failure. Enter a num-
ber between 0 and 100 for the patrol read rate.
BGI Rate The BGI (Background Initialization) Rate determines the
rate at which virtual drives are initialized in the back-
ground. Enter a number between 0 and 100.
Cache Flush
Interval
Enter a value in the eld to specify (in seconds) how often
the system will ush the cache memory.
CC Rate The CC (Check Consistency) Rate determines the rate at
which consistency check scans are performed on a disk to
determine if data is corrupted. Enter a number between 0
and 100.
Spinup Drive
Count
Enter a number to control the amount of drives that spin up
at one time.
Reconstruction
Rate
The reconstruction rate determines the rate at which a
virtual drive is reconstructed. Enter a number between 0
and 100.
Spinup Delay After the RAID controller completes initialization, the spinup
delay is the initial amount of seconds that pass before the
rst disk interrogation request is sent to the array.
NCQ Enable NCQ (Native Command Queuing) to increase
the performance of an HDD by allowing it to optimize the
operation sequence in retrieving outstanding requests and
executing read/write commands.
Spin Down
Delay Time
This item indicates how long a spin-down drive will wait
before the next command is executed
Stop CC On
Error
Select Yes to stop a consistency check when an error is
encountered.
Schedule CC Use this item to schedule a consistency check.
Maintain PD
Fail History
Enable this feature to track bad PDs (Physical Disk) across
reboot.
Stop on Error Enable this feature to stop system POST if an error is
detected.
Controller
BIOS
This item enables the controller BIOS. The default is
Enabled.
Disk Activity Enable this option if you want disk activity indicated by a
green activity LED. The disks must be installed in an enclo-
sure for this option to work.
