I moved my system to a new case for some additional room. When I powered the system up 2 of the drives are now labelled as disabled and contents emulated. I’ve tried to rebuild the data on each drive one at a time, but it either fails immediately after starting the array or at various times during the rebuild. I’ve also noticed that both drives are empty even though they did have data on them previously. I’ve attached a diagnostics report as well.

homeserver-diagnostics-20251210-0735.zip

Disk is dropping offline; check/replace cables, especially any power splitters.

3 minutes ago, bisk said:

I’ve also noticed that both drives are empty

They appear to have been formatted; that will delete all data.

Thanks. I’ll have a look at all of the cables. Pretty sure I’ve got some spares, so I’ll replace everything and cross my fingers.

Now I need to figure out how to recover the data off of the drives if at all possible. I’m assuming I shouldn’t let the drive rebuild onto itself if I want to try and preserve any data that was wiped after formatting. Time to purchase new 8 or 10TB drives to replace them, right?

1 hour ago, bisk said:

I’m assuming I shouldn’t let the drive rebuild onto itself

Rebuilding is fine, formatting is not; it's never part of a rebuild or data recovery. If you don't have a backup, a data recovery app like UFS Explorer should recover most of the data, and the free trial should show what it can recover

Looks like the issue was with the molex to 5xSATA power splitters. I bought new SATA to 5xSATA splitters and now I was able to recover the two drives and they’re no longer being emulated. Thanks for the assistance JorgeB!

21 hours ago, bisk said:

SATA to 5xSATA

These might cause issues - we recommend never splitting a SATA power connector more than 2 ways as the source SATA connection might not be able to carry enough current for 5 drives.