The information below is based heavily off of a post that can be found here:

http://erikimh.com/megacli-cheatsheet/.

I am providing the information on my blog in the event that the original blog post becomes unavailable at some point in the future, as we use this information quite regularly.

1-Gather Info: 

Controller information

megacli -AdpAllInfo -aALL
megacli -CfgDsply -aALL
megacli -adpeventlog -getevents -f controller-events.log -a0 -nolog

Enclosure information

megacli -EncInfo -aALL

Virtual drive information

megacli -LDInfo -Lall -aALL

Physical drive information

megacli -PDList -aALL
megacli -PDInfo -PhysDrv [E:S] -aALL

Battery backup information

megacli -AdpBbuCmd -aALL

Check Battery backup warning on boot

megacli -AdpGetProp BatWarnDsbl -a0

Controller management:

Silence active alarm

megacli -AdpSetProp AlarmSilence -aALL

Disable alarm

megacli -AdpSetProp AlarmDsbl -aALL

Enable alarm

megacli -AdpSetProp AlarmEnbl -aALL

Disable battery backup warning on system boot

megacli -AdpSetProp BatWarnDsbl -a0

Change the adapter rebuild rate to 60%:

megacli -AdpSetProp {RebuildRate -60} -aALL

2-Virtual drive management:

Create RAID 0, 1, 5 drive

megacli -CfgLdAdd -r(0|1|5) [E:S, E:S, …] -aN

Create RAID 10 drive

megacli -CfgSpanAdd -r10 -Array0[E:S,E:S] -Array1[E:S,E:S] -aN

Remove drive

megacli -CfgLdDel -Lx -aN

Physical drive management

Set state to offline

megacli -PDOffline -PhysDrv [E:S] -aN

Set state to online

megacli -PDOnline -PhysDrv [E:S] -aN

Mark as missing

megacli -PDMarkMissing -PhysDrv [E:S] -aN

Prepare for removal

megacli -PdPrpRmv -PhysDrv [E:S] -aN

Replace missing drive

megacli -PdReplaceMissing -PhysDrv [E:S] -ArrayN -rowN -aN

The number N of the array parameter is the Span Reference you get using megacli -CfgDsply -aALL and the number N of the row parameter is the Physical Disk in that span or array starting with zero (it’s not the physical disk’s slot!).

Rebuild drive – Drive status should be “Firmware state: Rebuild”

megacli -PDRbld -Start -PhysDrv [E:S] -aN
megacli -PDRbld -Stop -PhysDrv [E:S] -aN
megacli -PDRbld -ShowProg -PhysDrv [E:S] -aN
megacli -PDRbld -ProgDsply -physdrv [E:S] -aN

Clear drive

megacli -PDClear -Start -PhysDrv [E:S] -aN
megacli -PDClear -Stop -PhysDrv [E:S] -aN
megacli -PDClear -ShowProg -PhysDrv [E:S] -aN

Bad to good

megacli -PDMakeGood -PhysDrv[E:S] -aN

Changes drive in state Unconfigured-Bad to Unconfigured-Good.

Hot spare management

Set global hot spare

megacli -PDHSP -Set -PhysDrv [E:S] -aN

Remove hot spare

megacli -PDHSP -Rmv -PhysDrv [E:S] -aN

Set dedicated hot spare

megacli -PDHSP -Set -Dedicated -ArrayN,M,… -PhysDrv [E:S] -aN

Walkthrough: Rebuild a Drive that is marked ‘Foreign’ when Inserted:

Bad to good

megacli -PDMakeGood -PhysDrv [E:S] -aALL

Clear the foreign setting

megacli -CfgForeign -Clear -aALL

Set global hot spare

megacli -PDHSP -Set -PhysDrv [E:S] -aN

Walkthrough: Change/replace a drive

a. Set the drive offline, if it is not already offline due to an error

megacli -PDOffline -PhysDrv [E:S] -aN

b. Mark the drive as missing

megacli -PDMarkMissing -PhysDrv [E:S] -aN

c. Prepare drive for removal

megacli -PDPrpRmv -PhysDrv [E:S] -aN

d. Change/replace the drive

e. If you’re using hot spares then the replaced drive should become your new hot spare drive

megacli -PDHSP -Set -PhysDrv [E:S] -aN

f. In case you’re not working with hot spares, you must re-add the new drive to your RAID virtual drive and start the rebuilding

megacli -PdReplaceMissing -PhysDrv [E:S] -ArrayN -rowN -aN
megacli -PDRbld -Start -PhysDrv [E:S] -aN

3-Gathering Standard logs

#rm –f MegaSAS.log
#megacli -adpallinfo -a0
#megacli -encinfo -a0
#megacli -ldinfo -lall -a0
#megacli -pdlist -a0
#megacli -adpeventlog -getevents -f controller-events.log -a0 -nolog
#megacli -fwtermlog -dsply -a0 -nolog > controller-fwterm.log