Hello,

I need some help figuring out why one of my drive is disabled. This is the second time this has happened after a reboot after I swapped the case. I added 4 more drive and I thought my 850w PSU would be able to keep up. These 4 drives are directly connected to my motherboard while the existing ones connect via an HBA.

For the second time I reboot, at least one of my drives would go under the status 'drive is disabled'. I tried swapping the connection between the drives but the device is still disabled. Last time was one drive, this time it is a parity drive and another drive. I am rebuilding it.

I would appreciate any help. I attached the log of for the SMART report for the last drive that was disabled.

WDC_WD241KFGX-68CNGN0_SZG8XT3M-20260112-1103.txt themyscira-diagnostics-20260112-1110.zip

The write errors are not logged, normal syslog or syslog-previous, though the syslog is full of spam, so it is unclear if there were at least two reboots. See if you can clean up the spam and post new diags after it happens again.

9 minutes ago, aysonohbata said:

I added 4 more drive and I thought my 850w PSU would be able to keep up.

Ideally no more than 4 drives per PSU cable. MOLEX-SATA power splitters are better than SATA-SATA power splitters.

22 hours ago, trurl said:

Ideally no more than 4 drives per PSU cable. MOLEX-SATA power splitters are better than SATA-SATA power splitters.

I am going to check this. I thought that's what I did already a maximum of 3 but I think that the last one is also daisy chained with a couple of fans.

Sorry for the late reply but I finally did it. I have 2 drives per PSU cables, I had fans using the last connection which I moved to a separate cable.

However, that drive is still failing even after I moved its location to a different cable.

I think it has accrued to many errors and is refusing to spin at this point but if I were to wipe it on a different PC and put it back, I am fairly sure I could get it to work.

Is there any way I can wipe it from unraid instead?

If the drive is really not spinning up, wiping it should not make any difference. Is it detected by Unraid?

Yes, it is being picked up but it is showing as disabled.

Attach Diagnostics ZIP to your NEXT post in this thread.

"Disabled" is not the same as "spun down," but post diags like mentioned.

32 minutes ago, trurl said:

Attach Diagnostics ZIP to your NEXT post in this thread.

Here you go~

themyscira-diagnostics-20260209-1208.zip

SMART looks OK but there are some UDMA CRC errors. Replace the SATA cable, then try resyncing parity

https://docs.unraid.net/unraid-os/using-unraid-to/manage-storage/array/replacing-disks-in-array/#re-enabling-a-disabled-disk-rebuilding-onto-itself

If it fails, post new diags before rebooting.

Thanks. I have done that and will report back if the issue reoccurs but at least for now I am in a better place than I started.

Edit: I appreciate your patience with me on this one. This was clearly a more hardware issue than an unraid issue.

Edited February 9Feb 9 by aysonohbata