Heres the scenario:
we have a client who is running a raid 10 array. 4 drives, all identicle. we are going to call them drive 1-4. 1 and 2 are together and 3 and 4 are together. drive 4 goes down. we order a replacement. drive 3 the other in the series starts reporting media errors. we swap 4 out. the raid array rebuilds, status now optimal. now 3 and 4 are reporting media errors, so we do a consistancy check which results in hundreds of uncorrectable errors. what are my options here? i have a second spare so i can swap out drive 3 if needed, but i cannot create a backup because the backups keep failing due to media errors. I'm also wondering, if i swap out drive 3, wont i just get the same media errors because it will write them from drive 4? am i in a loop that i cannot get out of?