ReadyTIER log message...problem?

Okay, now we know there's a problem...my NAS was unresponsive this morning, taking down all my VMs.  When I rebooted the NAS, it came back up with volume in read-only mode.  I rebooted one more time and the volume is dead.  This is incredibly bad.  I do have quite a lot of this backed up via Unitrends Virtual Appliance to storage on the NAS itself, which is now apparently gone, but it's also backed up as cold copies to Amazon S3.  I need to figure out if there is any chance to recover this.

I'm wishing I could have had more response about this error message before this...I'm feeling a bit let down.  It's my responsibility to make backups, and I have, but it's going to take significant amounts of time to recover from this and it's going to cost me money in lost opportunities.  If I rebuild this I'm thinking that Ready Tier isn't ready at all and I'm not going to use it further.