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• HOME
  • for a higher number of files
  • limited disk space
  • backup
• WORK
  • for a moderate number of files
  • more disk space, transient nature of data
  • no backup, no disaster recovery
    
• PERM
  • secure file system location on magnetic tapes
  • no solution for long-term data archiving
  • no guarantee for 10 years according to rules for good scientific practice

Quota defauls

File system quotas at HLRN are enforced

• on HOME and WORK with respect to group ownerships
• on PERM with respect to user ownerships

Quota is available on the three file systems HOME, WORK and PERM. On each file system we distinguish

• quota for blocks, that is the disk space your files allocate, and
• quota for inodes, that is the number of files and directories.

Each quota consists of two numbers, the soft limit and the hard limit.

• Once your usage achieves the soft limit, the grace peroid of 2 weeks starts to count. By the end of the grace period you are not able to write files. As soon as you drop down below your soft limit the grace period is reseted.
• Once your usage achieves the hard limit, you are not able to write files.

Check your quota

Check your disk quota limits using the command hlrnquota. If your user ID is member of one or more project groups you will also get quota information for these project groups. Each of your files and directories is owned by your user ID (user ownership) and by exactly one of the group IDs you are a member in (group ownership). The data base for the output of hlrnquota is updated twice per hour.

blogin4:~ $ hlrnquota
Home
                           Blocks used   Soft limit   Hard limit     Inodes used   Soft limit   Hard limit    
  myaccount  (users)          89.45 GiB       40 GiB      100 GiB         187.3 k            -            -    
  prj00012  (projects)        68.03 GiB       40 GiB      100 GiB         659.6 k            -            -    

Work
                           Blocks used   Soft limit   Hard limit     Inodes used   Soft limit   Hard limit    
  myaccount  (users)          1.202 TiB        3 TiB       30 TiB          1.74 k        250 k        1.5 M    
  prj00012  (projects)        2.512 TiB       12 TiB       30 TiB               1          1 M          6 M    

File system quotas at HLRN are enforced

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Quota on HOME and WORK

For each file and directory stored on the HOME and WORK file systems, its group ownership affects the disk quotas of that particular group – no matter where the file or directory itself is located in a given file system. Sometimes this can make it hard to track down the disk quota when files or directories of a given group ownership are distributed over different top-level user directories and/or project directories.

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