TLDR: was a bad set of breakout cables caused buy a perhaps fried HBA (keeping the spare HBA in for now).

I just updated to 7.1.4 from v6 a few days ago in case this matters.

I got a message that multiple drives had errors suddenly and that one had been disabled. I went into the gui and saw Disk 1 was disabled and being emulated. I went to Shares to see if anything was there and 0 shares showed up, even the ones my others disk use. I stopped the array and then in the disk listing it now said it was missing a bunch of them and they were at the bottom as unassigned. I thought this was all odd so I rebooted the whole machine and when it came back up the gui showed all my disks fine except for the Disk 1 disabled still. I started the array in Maintenance Mode and ran a File System (file system is xfs) check and everything it tried failed with: xfs_repair: read failed: Input/output error.

All the drives are attached to a H310 PERC with a Jonsbo backplane. Has my HBA just suddenly like kicked the bucket?

The contents of my emails:

Event: Unraid array errors
Subject: Warning [RVC-NAS] - array has errors
Description: Array has 3 disks with read errors
Importance: warning

Disk 1 - HGST_HDN728080ALE604_VJGVJ9JX (sdd) (errors 2)
Disk 2 - HGST_HDN726060ALE614_K1JVBRSD (sde) (errors 1)
Disk 3 - HGST_HDN726060ALE614_K1JVK0AD (sdf) (errors 1)

Event: Unraid Disk 1 error
Subject: Alert [RVC-NAS] - Disk 1 in error state (disk dsbl)
Description: HGST_HDN728080ALE604_VJGVJ9JX (sdd)
Importance: alert

In Maintenance Mode

AFTER I Stopped the ARRAY the first time. Before the REBOOT.

Edited August 10, 2025Aug 10 by rvcjew
solution provided.

Power down, check all cables and connections, then post the diagnostics, after array start if the other disks come back online.

2 minutes ago, JorgeB said:

Power down, check all cables and connections, then post the diagnostics, after array start if the other disks come back online.

Will do and report back, TY for your time. We had some small earthquakes the other day so maybe some stuff got loose. I also recently set spin down delay to never, I wonder if it had anything to do with it. It was 30 minutes.

On 8/7/2025 at 6:46 AM, JorgeB said:

Power down, check all cables and connections, then post the diagnostics, after array start if the other disks come back online.

Update: solved?

Spoke to some people and was able to determine it was a fried hba that I had not cooled properly during it's life (whoops). Had a spare and that one has a temp fan cooling it to 32c and will get a fan bracket.

The new hba allowed me to boot as normal with data intact just emulated, was able to backup all that wasn't already backed up. Dropped to maintenance mode and passed a file system check and had 0 errors, did an extended smart test (18h) and passed so am now rebuilding to that same disk per the documentation. Should be resolved in 10 hours hopefully.

Thanks and I'll report back.

Failed in the 10th hour: I swapped everything to bays 5-8 to use the other set of breakouts and then it all went fine and the rebuild was good and I'm back up and running and have ordered new cables.

Thanks for everyone's time.