A brief description of each area and basic guidelines to follow are provided in the table below:
|Area||Path||Type||Permissions||Quota||Backups||Purged||Retention||On Compute Nodes|
||NFS||User set||50 GB||Yes||No||90 days||Read-only|
|User Archive ||
||HPSS||User set||2TB||No||No||90 days||No|
|User Archive ||
||NFS||770||50 GB||Yes||No||90 days||Read-only|
||Spectrum Scale||700 ||50 TB||No||90 days||N/A ||Yes|
||Spectrum Scale||770||50 TB||No||90 days||N/A ||Yes|
||Spectrum Scale||775||50 TB||No||90 days||N/A ||Yes|
||HPSS||700||100 TB||No||No||90 days||No|
||HPSS||770||100 TB||No||No||90 days||No|
||HPSS||775||100 TB||No||No||90 days||No|
Important! Files within “Work” directories (i.e., Member Work, Project Work, World Work) are not backed up and are purged on a regular basis according to the timeframes listed above.
|||This entry is for legacy User Archive directories which contained user data on January 14, 2020.|
|||User Archive directories that were created (or had no user data) after January 14, 2020. Settings other than permissions are not applicable because directories are root-owned and contain no user files.|
|||Permissions on Member Work directories can be controlled to an extent by project members. By default, only the project member has any accesses, but accesses can be granted to other project members by setting group permissions accordingly on the Member Work directory. The parent directory of the Member Work directory prevents accesses by “UNIX-others” and cannot be changed (security measures).|
|||(1, 2, 3) Retention is not applicable as files will follow purge cycle.|
On Summit, Rhea and the DTNs, additional paths to the various project-centric work areas are available via the following symbolic links and/or environment variables:
- Member Work Directory:
- Project Work Directory:
- World Work Directory:
- Although there are no hard quota limits for the project storage, an upper storage limit should be reported in the project request. The available space of a project can be modified upon request.
To keep the Spectrum Scale file system exceptionally performant, files that have not been accessed in the project and user areas are purged at the intervals shown in the table above. Please make sure that valuable data is moved off of these systems regularly. See HPSS Data Archival System. for information about using the HSI and HTAR utilities to archive data on HPSS. Just to note that when you read a file, then the 90 days counter restarts.
By default, the OLCF does not guarantee lifetime data retention on any OLCF resources. Following a user account deactivation or project end, user and project data in non-purged areas will be retained for 90 days. After this timeframe, the OLCF retains the right to delete data. Data in purged areas remains subject to normal purge policies.