SDSC > User Support > Compute and Data Resource Guides > Dash User Guide > Dash User Guide: Storage
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.
