I received the following message from our hosting provider today:

Hello, our sensors have detected a potentially critical issue in yourserver’s motherboard.
Unfortunately, Replacement is the only fix.
We’ve scheduled the repair for tonight 1AM to 2AM 1/23/2016 CST.
Your Data is 100% safe and on return to service all sites will return asthey were at shutdown.
We regret the interruption and will take all steps to complete in a timelymanner.
Hopefully, we'll be back up early tomorrow morning without incident.