Some more tips:
http://iknowsomething.com/how-to-fix...rand-new-disk/
Sometimes disks with 30K hours get sticky spindles, run hotter, and
take more power. So, purchase a new power supply, and see if the
disks spin up properly. It's possible the new 5TB disks spin easier
(they are new after all).
One way to copy two disks:
Code:
sudo cp /dev/sda /dev/sdb
So you could simply copy the 2 TB drive to the 5 TB drive and then use
parted to fix the partitions. You could simply mark the
remaining 3 TB space as a separate, blank partition. Mark the unit
Drive 0 New. Put that in the NAS, by itself, and see if it mounts and
if you can see your data. Don't put the second disk in it. Set the
NAS to JBOD mode.
I don't know what the "Clean Disk Option" mode does from the web
panel. If you did wipe the disk, then data recovery is difficult.
Use
testdisk and
photorec to attempt to recover data.
You can use your second 5 TB drive to receive the recovered
files.
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