We are currently experiencing problems with the main GPFS servers in Polaris which are causing collections to be unavailable. This is also affecting the Nextcloud service.
Operational staff are investigating.
UPDATE 2018-01-10 - 10:20 - The servers appear to be working, and collections are recovering. (Up to Q0292 so far.)
UPDATE 2018-01-10 - 10:50 - All collections recovered. Nextcloud recovered.