Tue Dec 17 Nexus Cluster Outage:

Nexus and all SGI machines at UofA are unaccessible due to the hardware
problems on a disk array serving global file systems. This equipment is
no longer covered by any warranty or support agreement with the vendor.
We are trying to revive the faulty hardware, and will announce
machine(s) availability to the users as soon as the problem is fixed.

UPDATE 16:29 PST 17 DEC

The file system has been fixed.

"We think that machines will be back up tomorrow around noon. We are
taking this opportunity to clean up our CXFS settings."

 UPDATE 11:15 PST 18 DEC

 Nexus, all SGI machines and filesystems are back in productio.