Backup on Betzy, Fram, Saga, and NIRD
Backup of home folders on compute clusters
Betzy, Fram and Saga: Home folder is backed up daily to NIRD storage, and can be accessed via following mount point on corresponding clusters login nodes:
/cluster/backup/home/$username
Please, note that we keep a copy of all files, but daily backup only copies the changes (done through a rsync process). If the file has not been modified, the timestamp will remain the same as on the file inside your home or project folders.
Backup of project folders on compute clusters
Directories under /cluster/projects are backed up. All other areas are not backed up.
In addition to not being backed up, the work area /cluster/work also enforces
an automatic cleanup strategy, and is not meant for permanent storage.
Files in this area will be deleted after 42 or 21 days, depending on the storage capacity,
see User work area for details.
Betzy,Fram and Saga: The project areas are backed up to NIRD storage which can be accessed via following mount point on all clusters login nodes:
/cluster/backup/hpc/betzy/nnXXXXk/cluster/backup/hpc/fram/nnXXXXk/cluster/backup/hpc/saga/nnXXXXk
Snapshots
In addition to the daily backup, we also have snapshots of all home and project files, copied fully:
Location: /cluster/backup/home/.snapshots/
Daily snapshots for the last 7 days
Weekly snapshots for the last 6 weeks
Location: /cluster/backup/hpc/.snapshots/
Daily snapshots for the last 7 days
Weekly snapshots for the last 6 weeks
Backup on NIRD
Protection against data corruption on NIRD is implemented by taking nightly snapshots. Even so, it is the responsibility of the PI/XO to regulate the usage and take steps to ensure that the data are adequately secured against human errors or inappropriate usage/access.
The allocated storage quota on NIRD is meant for primary storage. Backup to a secondary location is a service on demand and can be ordered for selected datasets.
Snapshots and backup service on NIRD are described in details on the dedicated pages linked below.