Please can someone tell me how do I find out which one of my 5 drives on the F5-221 (running TOS 4.2.40) is 'knocking' - It is hard to explain the knock but it sounds like the hard drive is trying to 'park' the heads every 8 to 10 seconds and it's just 1 knock. The other day I had one WD red drive fail on me and I replaced it, I now suspected it is my other one as it was purchased at the same time so yesterday I removed it to see if the knocking would stop but then when I replaced the drive I got a 'raid error' message but I have sorted that out.
All 5 of the drives are in Single Disk BTRFS format and each drive is mapped in Windows 10 but I don't really want to pull anymore of them in case I get the raid error again; so from a windows 10 machine is there a command I can run that will test each drive to tell me if it is degraded or not?
Any comments/help will be greatly appreciated as this 'knocking' noise next to me every few seconds is really messing with my head
Many thanks
Martin.