MegaCli

Check raid card:

lspci | grep -i raid

Ubuntu/Debian:

apt-get install alien
# Convert to .deb
alien  -k --scripts  filename.rpm
# Install .deb
dpkg  -i  filename.deb

CentOS/Other:

https://docs.broadcom.com/docs-and-downloads/raid-controllers/raid-controllers-common-files/8-07-14_MegaCLI.zip

Clear all config

-CfgLdDel -Lall -aAll
-CfgClr -aAll

Physical drive information

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

Virtual drive information

-LDInfo -Lall -aALL

Enclosure information.

-EncInfo -aALL

Set physical drive state to online

-PDOnline -PhysDrv[E:S] -aALL

Stop Rebuild manually on the drive

-PDRbld -Stop -PhysDrv[E:S] -aALL

Show rebuild progress

-PDRbld -ShowProg -PhysDrv[E:S] -aALL

View dead disks (offline or missing)

-ldpdinfo -aall |grep -i “firmware state\|slot”

View new disks

-pdlist -aall |grep -i “firmware\|unconfigured\|slot”

Create raid 1:

-CfgLdAdd -r1 [E:S, E:S] -aN

Create raid 0:

-CfgLdAdd -r0 [E:S, E:S] -aN

Init ALL VDs

-LDInit -Start -LALL -a0

Init 1 VD

-LDInit -Start -L[VD_ID] -a0

clearcache

-DiscardPreservedCache -L3 -aN (3 being the VD number)

Check FW 

-AdpAllInfo -aALL | grep 'FW Package Build'

Flash FW

-AdpFwFlash -f <Your rom file> -a0

Flash FW to older version

 -adpfwflash -f $ROMFILE -noverchk -a0

Check BBU

-AdpBbuCmd  -a0

Flash LED on HDD

-PdLocate -start -physdrv[E:S] -aALL
-PdLocate -stop -physdrv[E:S] -aALL

Scan Foreign

-CfgForeign -Scan -a0

Import Foreign

-cfgforeign -import -a0

Bad to Good

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

Disable auto rebuild

-AdpAutoRbld -Dsbl -a0

Enable auto rebuild

-AdpAutoRbld -Enbl -a0

Check BBU

-AdpBbuCmd -a0

JBOD

Figure out the Enclosure Device ID

-PDList -a0 | grep -e '^Enclosure Device ID:' | head -1 | cut -f2- -d':' | xargs

Set all the drives to “Good”

-PDMakeGood -PhysDrv[$id:1,$id:2,$id:3,$id:4,$id:5,$id:6,$id:7,$id:8] -Force -a0

Check and see if JBOD support is enabled

AdpGetProp EnableJBOD -aALL

Turn JBOD support on

AdpSetProp EnableJBOD 1 -a0

Set each disk from above to be in JBOD mode

-PDMakeJBOD -PhysDrv[$id:1,$id:2,$id:3,$id:4,$id:5,$id:6,$id:7,$id:8] -a0

The syntax for checking a disk within a MegaRAID based controller is as follows via CLI:

This shows the "Device ID: X", Replace n with the Device ID

-LdPdInfo -a0 | grep Id
smartctl -a -d sat+megaraid,n /dev/sg0

Disk missing - No automatically rebuilding

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

For more see here: https://www.broadcom.com/support/knowledgebase/1211161498596/megacli-cheat-sheet--live-examples