Recently I needed to add 2 more 1tb drives to my current RAID5 x3 1TB setup. This was all done with a hotswap cage and no downtime. I will show you how I added the first one in this example enclosure(252) slot(2). Clear it
MegaCli -pdclear -start -physdrv '[252:2]' -a0
Set state to (Unconfigured Good)
MegaCli -pdmakegood -physdrv '[252:2]' -a0
Add to current logical volume
MegaCli -ldrecon -start -add -physdrv '[252:2]' -l0 -a0
Check Progress sigh…
MegaCli -ldrecon -showprog -l0 -a0
Prepare for a pretty long wait if you have a large array.
Reconstruction on VD #0 (target id #0) Completed 43% in 501 Minutes.
and this is for a 1.8TB with and additional 1TB drive being added to the array.
/dev/mapper/vg0-lvol0 1.8T 1.6G 1.8T 1% /media/pub
Yeah!
