On 21/04/2020 17:55, Leland Ball wrote:
Thanks Roger, I appreciate your help and quick reply!
Two of the disks (sda, sdb) were able to return
# smartctl --all /dev/sdX
just fine, but sdc and sdd returned very little, so I dug a bit deeper with
# smartctl -d ata -T permissive --all /dev/sdX
The results are in the pastebin: https://pastebin.com/yWJTPvBa
It looks like only sdd has an error count. I would love to get this up
long enough to recover at least a portion of the data, which isn't
backed up elsewhere.
PLEASE don't use pastebin and places like that. Just attach them to the
email - they're plain text and aren't that big.
I looked up the model number on google - it's a Caviar Green. While I
don't know that model, the fact it's a Green rings alarm bells. And I
can find no mention of ERC - also a red light.
Can you get the disks out of the NAS and try to assemble the array on an
up-to-date computer? Can you ddrescue sdd? The lack of ERC is very
dangerous with parity raid.
Cheers,
Wol
