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Dash User Guide: Storage Overview

Dash has two default areas for storing data: the home directory for each user ($HOME), under/users and a working directory for each user, under /work. Policies and recommended uses for these two areas differ.

Location Quota Aggregate Space Available Backup Purge Comments & Recommended Use
$HOME 2 GB 0.5 TB Daily None For source code and configuration files; see warning below
/work/$USER Limited by total shared space 5 TB None None Temporary files; see warning below
GPFS-WAN
(/gpfs-wan/scratch/$USER)
Limited by total shared space 650 TB None None Running jobs; temporary storage of input & output files
More about GPFS-WAN
/oasis/$USER Limited by total shared space 200 TB None None Being retired. See Data Oasis for more information.
/phase1/$USER Limited by total shared space 850 TB None None Running jobs; temporary storage of input & output files
More about Oasis
RAMFS
(/ramfs)
Limited by total space 650 GB None at end of job Available on the vSMP nodes
More about RAMFS
Flash Storage
(/scratch)
Limited by total space 64GB (compute)
960GB (vSMP)
None at end of job Available on the compute and vSMP nodes
More about Flash Storage
Because your home and work directories are located on the Network File System (NFS), neither should be used for running jobs. Instead, users should copy their simulation outputs straight to /phase1, because the performance is better and more total space is available there.

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