LSI Logic MegaRAID Cheat Sheet by richardjh

DELL’s PowerEdge RAID Controller (PERC) is a special LSI Logic SAS/SATA RAID Controller and thus the LSI management utility called MegaCli also works for this contro­ller. For older contro­llers like PERC4 and PERC3 please refer to http:/­/li­nux.de­ll.c­om­/st­ora­ge.s­html (keyword DellMgr).

MegaCli is available for Linux, DOS, Windows, Netware and Solaris.
You can get it from LSI’s website (search for MegaRAID SAS) or download it here: http:/­/ww­w.l­si.c­om­/su­ppo­rt/­dow­nlo­ads­/me­gar­aid­/mi­sce­lla­neo­us/­lin­ux/­1.0­1.4­0_L­inu­x_C­li.zip.

Inside the ZIP file you’ll find an RPM archive which contains the MegaCli and MegaCli64 binaries (will be installed to /opt/M­ega­RAI­D/M­ega­Cli).

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

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

2. Mark the drive as missing

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

3. Prepare drive for removal

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

4. Change­/re­place the drive

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

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

6. 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

This emergency cheat sheet is not exhaus­tive, but it should be sufficient in most cases.

For a complete reference either call

MegaCli -h

or refer to the manual at:

http:/­/ww­w.l­si.c­om­/fi­les­/do­cs/­tec­hdo­cs/­sto­rag­e_s­tan­d_p­rod­/sa­s/m­r_s­as_­sw_­ug.pdf (Chapter 3 – MegaRAID Command Tool).

This content has been taken from http:/­/to­ols.ra­pid­sof­t.d­e/p­erc­/pe­rc-­che­at-­she­et.html with sincere thanks to the author for distilling the inform­ation into a usable format.

The original author is:
Moritz Mertinkat
moritz AT mertinkat DOT net