DnA (Data n' Archive)¶
DnA is a 2.4PB GPFS file system for the Joint Genome Institute (JGI)'s archive, shared databases, and project directories. Write access to DnA is restricted to protect high performance; data can only be written to DnA from Data Transfer Nodes.
| File System | Location | Quota | Backups | Purging |
|---|---|---|---|---|
| DnA Projects | /global/dna/projectdirs/ | 5TB by default | Daily for directories with quota ≤ 5TB | Not automatically purged |
| DnA Shared | /global/dna/shared/ | Defined by agreement with JGI management | Backed up by JAMO | Policy set by JAMO system users |
| DnA DM Archive | /global/dna/dm_archive/ | Defined by agreement with JGI management | Backed up by JAMO | Not automatically purged |
The intention of the DnA "Project" and "Shared" space is to be a place for data that is needed by multiple users collaborating on a project which allows for easy reading of shared data. The "Project" space is owned and managed by the JGI. The "Shared" space is a collaborative effort between the JGI and NERSC.
If you would like a project directory, please contact JGI management to discuss the use case and requirements for the proposed directory.
The "DM Archive" is a data repository maintained by the JAMO system. Files are stored here during migration using the JAMO system. The files can remain in this space for as long as the user specifies. Any file that is in the "DM Archive" has also been placed in the HPSS tape archive. This section of the file system is owned by the JGI data management team.
Note
JAMO is JGI's in-house-built hierarchical file system, which has functional ties to NERSC's file systems and tape archive. JAMO is not maintained by NERSC.