User account Space
Each user account has a quota of 50GB in the home directory. Additional space is available, please send email to email@example.com for information.
Each research group has a quota of 10TB in /central/groups/<groupname>. Additional space is available, please send email to firstname.lastname@example.org for information.
There are two scratch directories available. A 500TB of standard, high speed disk mounted on /central/scratch and a 30TB high IO disk mounted on /central/scratchio. Best practice dictates creating directory for yourself (e.g. /central/scratch/<username>) and working with files from inside of said directory. These disks are truly meant as scratch space. Any files not accessed in 7 days will be automatically purged.
Checking Quotas for User and Group
To check see how much storage you are using you can use the mmlsquota
mmlsquota -u username --block-size auto central:home
To check for your group storage
mmlsquota -j groupname --block-size auto central
The GPFS based file system uses snapshot technology that will capture file changes in the following way:
- Every 4 hours for 1 day
- Every day for 1 week
- Every week for 4 weeks
The snapshot directory is not listable, but can be found be changing directory to ".snapshots" .
Backup and Archive
There is no formal BCP/DR style back up nor archival system in place. For information on running backups using the Duplicity client see this page. (Duplicity supports saving backups to AWS, Google, Backblaze B2, ssh based hosts and others.)