WD MyCloud NAS - 1 Failed Drive replaced, found another dead one before array was rebuilt [closed]

Solution 1:

RAID is not a backup. If you have important data, take backups.

There are recovery options though, which have 0% - 100% probability of getting your data back.

The basic process is to take image copies of the hard drives to other hard drives, and then try to reconstruct the arrays from the images. To actually do this, you need to know how drives, RAID systems and filesystems interact with each other.

If you don't have such knowledge, then your only option is a data recovery company.

Solution 2:

Anyone have any ideas on how to retain the data that's on the drives?

There is no data on the drives. THere are fragments of data, but you literally ask how to put together a mirror from half the pieces.

There is something like common sense. Which includes backup - since 30 years or so. Ever since leaving school back then i have been told times and times ago how people ruined companies by not making backups.

So, SOEMONE decided to not make backups or SOMEONE decided to not grant you the funds when you asked. That person is legally responsible for gross neglect and incompetence, should your boss want to pursue that legally.

The only answer we can give is: Reinitialize and restore from backup. Not that hard - you DO have tapes or at least disc backups. Now you may realize why there are still tapes around.

Solution 3:

... and monitor your RAID, scrub periodically and have notifications about component status. Unmonitored RAID equals no redundancy, because in this case you only recall there was a RAID when it was already failed below its survival mark.