I have a 30 drive array that is broken up into a raid 6+0 arrays. The raid controller software was reporting that a drive had failed, so I put in a new drive and during the rebuild process two more drives in the same array "failed". The controller reports them as having failed, but I would guess that they are just giving ecc errors and it has dropped them from the array.
Does anyone have any experience with forcing a drive that failed online, or would it be possible to take a drive out and dd/sector clone it to another drive so it will rebuild correctly. I only ask as having to restore the 40+Tb of data from tape is not something I am looking forward to.
I am using an LSI MegaRaid adapter on an Ubuntu Server with the MegaRaid storage manager software.