Thank you for this thread, sir drjUnraid.
My power supply recently died. But after replacing it, 2 disks wont mount.
I actually had accepted the loss of 7TB of backup work files when I saw this post.
Followed the spaceinvaders tutorial. After a tense one hour, everything mounted.
As I type, unraid is doing a parity check.
Thank you also to the awesome unraid community.
Regards,
junbernardo