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    - Applications on Almaak-01

Temporary Disk Space Policy on almaak-01

Systems & Access :: Learning to Use :: Sun Computing Resource

The following are the policies regarding the maintenance and the correct use of /tmp space on almaak-01.

Usage Policies:

  • Each user is limited to a maximum of 100MB on /tmp.
  • Users by default have a quota of 500MB on /tmp1. They may request a larger quota by sending e-mail to hpcc@usc.edu.
  • /tmpsas0 is not to be used except for SAS temporary work files generated automatically by SAS. Any other files placed on /tmpsas0 will be deleted.

Purging Policies:

  • /tmp and /tmp1 will be purged nightly of files not modified in the last five days.
  • Any other files, except for the SAS temporary work files placed on /tmpsas0, will be deleted several times an hour.

Please remember that these file systems are a shared resource and that other users need space for their temporary files. 'Accessing' files simply to keep them from being purged is not good citizenship.

Files on the temporary file systems are not backed up. It is the users' responsibility to copy any important data to permanent file systems. While HPCC will try to protect user files for the stated retention periods, hardware failures that wipe out all data on file systems do occur occasionally.

In addition, if the performance of a computing resource is degraded by a temporary file system that has too little available free space, then HPCC management may compress some user files, move some files to another file system, or delete some files that have been accessed within the last five days.

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