Update 9:55 AM: Bay is back up. As near as we can tell, no corruption was found, so all files should be intact.
The campus file server (Bay) was patched this morning. During this process the operating system found some corruption on the main data drive. The system automatically started a disk check process in an attempt to repair the corruption. Bay will unavailable until this process is complete. Due the size of the drives on Bay, there is no estimated time that services will be available again; it is very possible that this could be a full day outage.
Check http://status.csuchico.edu for current information on system outages.