MEGACLI CHEATSHEET

While there are a lot of different parameters for MegaCli, some of them are always identical. These are described here in short. Adapter parameter -aN The parameter -aN (where N is a number starting with zero or the string ALL) specifies the PERC5/i adapter ID. If you have only one controller it’s safe to use ALL instead of a specific ID, but you’re encouraged to use the ID for everything that makes changes to your RAID configuration. Physical drive parameter -PhysDrv [E:S] For commands that operate on one or more pysical drives, the -PhysDrv [E:S] parameter is used, where E is the enclosure device ID in which the drive resides and S the slot number (starting with zero). You can get the enclosure device ID using “MegaCli -EncInfo -aALL”. The E:S syntax is also used for specifying the physical drives when creating a new RAID virtual drive. Virtual drive parameter -Lx The parameter -Lx is used for specifying the virtual drive (where x is a number starting with zero or the string all). Controller information MegaCli -AdpAllInfo -aALL MegaCli -CfgDsply -aALL MegaCli -AdpEventLog -GetEvents -f events.log -aALL && cat events.log 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 Controller management Silence active alarm MegaCli -AdpSetProp AlarmSilence -aALL Disable alarm MegaCli -AdpSetProp AlarmDsbl -aALL Enable alarm MegaCli -AdpSetProp AlarmEnbl -aALL 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 MegaCli -PDRbld -Start -PhysDrv [E:S] -aN MegaCli -PDRbld -Stop -PhysDrv [E:S] -aN MegaCli -PDRbld -ShowProg -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 (or back to good as I like to call it) MegaCli -PDMakeGood -PhysDrv[E:S] -aN This changes drive in state Unconfigured-Bad to Unconfigured-Good. Walkthrough: Change/replace a drive Set the drive offline, if it is not already offline due to an error MegaCli -PDOffline -PhysDrv [E:S] -aN Mark the drive as missing MegaCli -PDMarkMissing -PhysDrv [E:S] -aN Prepare drive for removal MegaCli -PDPrpRmv -PhysDrv [E:S] -aN Change/replace the drive If you’re using hot spares then the replaced drive should become your new hot spare drive: MegaCli -PDHSP -Set -PhysDrv [E:S] -aN 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