The /tigress file system is a large, shared filesystem, available on the head and compute nodes (if any) of Della, Hecate, Tiger, and Tigressdata . Space usage is restricted. Presently, an application for space is made by sending a request to email@example.com.
The implementation of this file system uses GPFS (General Parallel File System), an IBM commercial file system specifically designed to support high reliability and computing clusters. There is just over 2 PB of space allocated to /tigress. The data and files on /tigress are backed up to a TSM (Tivoli Storage Manager) server.
/tigress is backed up to PICSciE's private TSM server. Only the latest copy of any file residing on /tigress is kept on the server, no previous versions of a file are kept. These active files are kept on the backup server indefinitely. Should a file be deleted from /tigress, it will remain on the backup server for 10 days after which it will be deleted from the backup server. The current status of the backups can be found in file /tigress/BACKUP_STATUS.txt. Files will be backed up on a weekly cycle and will serve as a disaster recovery system such that in the worst case only one week of files should ever be lost.
/tigress was set up to act as a repository for output or data that requires more processing on another system or cluster. It is not suitable to use as scratch disk or as a home filesystem.