TS-453A RAID1 bad blocks: what to do?

[DeMaat]

Hi QNAP Community!

Need some help with the following. I have a TS-453A with two disks mounted in RAID1 (mirroring) configuration. Since a couple of days I'm getting a warning highlighting possible bad blocks on disc 2. Did a disk scan, here are the results:

Warning 2019/09/30 21:24:56 System 127.0.0.1 localhost [Host: Disk 2] Bad Blocks Scan completed. 3 bad block(s) found.
Abnomal Sector Count: 3
The disk was detected not to be in the best status.
Disk model: WDC WD40EFRX-68WT0N0 82.00A82 (Western Digital Red, about 3 years old)

What to do here? Simply replace Disk 2 with a new one?
As I'm running RAID1 I should not run into any data loss issues, correct?

Thanks upfront for you help and advise! Best, de Maat

qnap disk 2 health 2019-10-01 09_31_37-Clipboard.jpg

[dolbyman]

correct..hotswap the defective disk

make sure you have full backups at all times

[DeMaat]

Hi Dolbyman,

That's what I'll do then. The good news is the disk is failing *just* within Western Digital's 3 year warranty period. The bad news is the WD Red disk (marketed to be designed for NAS usage) is failing within 3 years...