MegaCli -AdpAllInfo -aAll
View information about the battery backup-up unit state
MegaCli -AdpBbuCmd -aAll
View information about virtual disks Useful for checking RAID level, stripe size, cache policy and RAID state:
MegaCli -LDInfo -Lall -aALL
View information about physical drives
MegaCli -PDList -aALL
To see information about the patrol read state and the delay between patrol read runs:
MegaCli -AdpPR -Info -aALL
To find out the current patrol read rate, execute
MegaCli -AdpGetProp PatrolReadRate -aALL
To reduce patrol read resource usage to 2% in order to minimize the performance impact:
MegaCli -AdpSetProp PatrolReadRate 2 -aALL
To disable automatic patrol read:
MegaCli -AdpPR -Dsbl -aALL
To start a manual patrol read scan:
MegaCli -AdpPR -Start -aALL
To stop a patrol read scan:
MegaCli -AdpPR -Stop -aALL
If your system is not connected to a UPS, you should disable the physical disk cache in order to prevent data loss.
MegaCli -LDGetProp EnDskCache -LAll -aALL
To enable it (only do this if you have a UPS and redundant power supplies):
MegaCli -LDGetProp DisDskCache -LAll -aALL
Detail about disks:
MegaCli -ShowSummary -aALL
Check patrol read warnings:
MegaCli -AdpEventLog -GetSinceReboot -warning -fatal -a0