Disk Space for Hall D at JLab

Scratch Disk: /scratch

general purpose temporary files

• 1.8 TB
• user writable
• available lab-wide
• files deleted after 30 day of non-access
• not backed up

Work Disk: /work/halld

quasi-permanent analysis support space

• 2.6 TB guaranteed, 5.0 TB maximum
• user writable
• available only for Hall D users
• files never deleted by system
• not backed up

Cache Disk: /cache

staging area for tape-resident files

• image of tape library files
• non-user writable (request write from library)
• general cache available for all farm users
  • no Hall D dedicated space
• files deleted to make space for more, oldest by access deleted first
• not backed up, yet backed up by construction

Group Disk: /group/halld

permanent storage for experimental groups

• 35 GB (up from 30 GB), controlled by quota
• user-writable
• available only for Hall D users
• files never deleted by system
• backed up
• snapshot'ed

Home Directories: /home

your stuff

• individual disk quotas
• user writable
• available to individual user
• files never deleted
• backed up
• snapshot'ed