I will look in to the cables. Never had a problem and it's been running fro awhile.
This is what I see with a check on /dev/md7
Phase 1 - find and verify superblock...
- block cache size set to 512616 entries
Phase 2 - using internal log
- zero log...
zero_log: head block 571635 tail block 565904
ERROR: The filesystem has valuable metadata changes in a log which needs to
be replayed. Mount the filesystem to replay the log, and unmount it before
re-running xfs_repair. If you are unable to mount the filesystem, then use
the -L option to destroy the log and attempt a repair.
Note that destroying the log may cause corruption -- please attempt a mount
of the filesystem before doing this.
the weird this is that the filesystem still shows as parity is valid and not being emulated.