Hello,

 

I’m currently experiencing some issues with my Unraid server and could use some expert guidance. It's been an issue that's plagued me for quite a few months now. My setup includes a Mac Pro (2013, Xeon E5-1650 v2, 64GB RAM) running Unraid 7.0.0. I currently do not have a backup and my array is almost full (93% usage), mainly because of this issue.

 

My array configuration:

• Dual Parity (two 14TB drives)
• One 500GB internal SSD cache drive
• Disks are connected via two USB enclosures:
  • MediaSonic 4-bay
  • Orico 5-bay (which has recently started failing)

 

Current Problem: The Orico 5-bay enclosure has become unreliable, causing multiple drives to randomly appear as "Unmountable: Wrong or No File System" and intermittently marking drives as disabled (red X).

 

 

Currently affected drives:

• Parity Drive 1: Disabled (contents emulated)
• Disk 1 (14TB): Disabled (contents emulated) & Unmountable
• Disk 2 (10TB): Unmountable
• Disk 8 (brand new 14TB disk in a new Terramaster enclosure, pre-cleared but also showing Unmountable)

 

Each reboot randomly changes which drives show up as unmountable, though data was previously intact before this started happening.

 

 

What I've Tried:

• Purchased a new Terramaster 5-bay USB enclosure and an additional new 14TB drive.
  • The hopes would be to try and move data from one of the drives onto this one, decommission the older drive and reformat it for the new enclosure, then repeat.
• Rebooted all of the systems many times, as well as left powered off for a few days
  • When powering up the Orico 5-Bay, I have to connect the drives in a specific order first before I can start the array. Pretty annoying, so I'd be glad to get rid of this enclosure.
• Tried moving existing drives to the new enclosure, but Unraid suggests reformatting when connected there, which I've avoided to prevent data loss.
• Added a new drive (Disk 8 ) intending to offload data from affected drives, but Unraid is marking this new drive as unmountable too.

 

Key Concerns:

• How can I safely move my existing drives (with data intact) to the new enclosure without Unraid requiring them to be reformatted?
• What steps should I follow to repair these unmountable file systems safely?
• What's the recommended process for recovering and re-enabling my disabled Parity Drive 1 and Disk 1 without losing data?

 

I’ve attached my diagnostics for detailed review.

 

Thanks in advance for your help —  pretty much stuck at the moment and appreciate any clear steps or advice on safely resolving this.

plextower-diagnostics-20250401-2302.zip

3 minutes ago, holyscotsman said:

How can I safely move my existing drives (with data intact) to the new enclosure without Unraid requiring them to be reformatted?

This can be a problem with USB enclosures, have you just tested inserting one or more disks in the replacement enclosure to see if they are detected with the same identifiers?

The problems you are experiencing are some of the many reasons USB not recommended for assigned disks.

1 hour ago, JorgeB said:

This can be a problem with USB enclosures, have you just tested inserting one or more disks in the replacement enclosure to see if they are detected with the same identifiers?

I did try to move them into the other enclosure, but the Array refuses to start (even in Maintenance Mode) if one of those disks are missing.

Post the diags with one of the disks in the new enclosure, and let us know which one it is.