We are currently experiencing an outage in the NFS service that provides RDSI collections and HPC "file share" collections. The problem is with the NFS exports. It has caused NeCTAR VMs, collection VMs, and Euramoo to lose their NFS mounts, resulting in the data being temporarily unavailable. There is no risk to the data itself.
UPDATE: 2016-04-22 09:55 - the problem is now resolved. People with collections NFS mounted on NeCTAR VMs may need to unmount / remount the collections.