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. If you require traditional backups or archival storage please reach out to IMSS (email@example.com) and we can help design a system for your needs.