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Please periodically check whether your scientific results data stored on HLRN file systems should be periodically transferred to the user's home institution. To maintain good I/O performance for all user jobs, the usage of the shared file systems of the HLRN resources needs to be limited. The HLRN supports three different file systems for the users, see also File Systems.

• HOME, HOME=/home/${USER}
  
  • for a higher number of files (configuration files, source code and executables)
  • limited disk space
  • backup
• WORK, WORK=/scratch/usr/${USER} or /scratch/projects/<projectID>
  
  • for a parallel input/output for your jobs, 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

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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    

Policies

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The HOME file system (HOME=/home/${USER}) is intended to be used for the following data:

• configuration files
• source code and executables
• important files for backup

You might experience an exceeded HOME quota due to unintended usage of the HOME file system, e.g.

• large files
• parallel input/output for your jobs

If your HOME quota is exceeded, we recommend

1. to check whether you can either delete files or move files from HOME to WORK (no backup!) or to PERM
2. to contact your consultant, explain your storage needs, and ask for a higher quota limits.

for WORK

The WORK file system (in WORK=/scratch/usr/${USER} or /scratch/projects/<projectID>) is intended to be used for the following data:

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If your WORK quota is exceeded, we recommend

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