Sorry, I had some useful links, but it seems I can’t include them.
I have a Supermicro 6048R-E1CR72L or SC847DE16-R1K28LPB (I’m unsure exactly which model) with dual Xeon E5-2696 CPUs and 128GB of ECC memory.
It has 3 LSI 3008 SAS adapters flashed to 16.00.12.00.
It has TrueNAS Core 13.0-U6.4 installed.
I added 9 Western Digital Ultrastar DC HC580 WUH722424ALE6L4 0F62796 24TB SATA hard drives into the front of the chassis and created a raidz3 pool, did a little light testing and it seemed ok.
Then I added an 8 drive HGST Ultrastar HUH721212ALE600 0F30144 12TB SATA raidz3 pool from another Supermicro server (SATA backplane) running TrueNAS Core 12.0-U8.1 into the new server
(also in the front of the chassis) and rebooted. My first clue something was wrong was when no pools showed up and no pools were available for import. After looking around I discovered a bunch of multipath disks in Storage → Multipaths.
I tried moving the 12TB pool back to the original server but I have been unable to reimport them.
I’m using only SATA drives without interposers (as far as I know) so I don’t understand why multipath is being used on the new server.
After reading another post here (google “Multipath Corrupted Multiple Disks and Possibly Destroyed Pool - Please Help”) I am wondering if there could be something incorrectly wired
that is causing the problem (the server was bought from a company that resells used servers).
The backplanes are (front) BPN-SAS2-847DF + BPN-SAS3-847DE48D expander (documentation is available for BPN-SAS2-847DF) and (back) BPN-SAS2-847DR + BPN-SAS3-847DE24D (I couldn’t find a manual).
It looks like the front backplane supports two expanders but I don’t see a second one installed (Primary Airmax Connectors are connected, but the Secondary Airmax Connectors are not).
Any ideas on what could be wrong or how to diagnose this?
Thanks a lot for any help!