Hi,

Can someone more technical look at the attached diagnostics and figure out why all my array disks are shown as missing please.

The parity drive is still there, as are the two pool caches, but all of them are connected to sata ports on the motherboard directly. Also, the 4 unassigned disks are listed still, being housed in a Startech SAT35401U Rackmount enclosure. This is connected to the Server via a mini SAS cable to a Mini SAS External adapter, then connected internally to an Intel RES2SV240. The Intel RES2SV240 is then connected to a HP SAS HBA H220. All of this is contained within a generic 16 bay server case which has been fault free for the past 8 years.

As I mention, the unassigned drives are showing in Unraid, whereas the Array drives as shown as missing, but all of them are connected to the same Intel Expander Card via the HP SAS HBA.

I just cant figure out why they are not showing, other than maybe the backplane or all four cables are faulty. Can someone concur with this from the diagnostics?

Cheers

Chris

tower-diagnostics-20250914-1925.zip

Edited September 14, 2025Sep 14 by apefray
Update

The drives are not being detected by Linux, swap slots between one of the UD disks that is being detected and one of the array missing disks, if it still doesn't come up, connect one of the missing array drives to the onboard SATA.

Did as you mentioned and the drives were recognised on the SATA ports. I made a mistake in my original post, where I said the UD drives were connected to the Intel expander via the Startech enclosure, but they weren't. They were connected to the SCU ports on the motherboard. So basically anything connected directly to the MB ports were working fine, and anything connected via the Intel Expander card weren't working. It turns out it was the Intel expander card that had failed for some reason.

To cut a long story short, I just went ahead and bought a 2nd hand super micro server which has a built in expander on the backplane, so I'm now using just the HP HBA to connect all the drives including the UD ones, and the Startech is now connected to the SATA ports on the MB. I then moved the parity and 2 cache drives to the Startech enclosure and it's now back up and running.

Also swapped the unraid usb boot to a new one as it had been running for 9 years, although there was nothing wrong with the old USB, just took the opportunity to update it whilst preparing the new server.

I did come across a couple of networking niggles, so had to change the server IP address, but they appear to be sorting themselves out (cache maybe).