ccstat: Disk quotas, filesystem usage, and scratch area

• User home directories (e.g. /u/home/user) carry a disk quota soft-limit of 50 MB and 2000 files and a hard-limit of 60MB and 2100 files. Once you go over your soft-limit, you will still be able to create some files, up to the hard-limit, but you will begin to receive warnings from the system until you reduce your usage.
  • The home dirs are backed up . File restores are possible upon request to help@ccstat.uky.edu .

• For large file usage that will not fit within the homedir quota, there is a second filesystem that can be used as a scratch area for data files. Each account has a link in the home dir called scratch that will take you to a dir on this filesystem. The full pathname of this dir takes the form of /scratch/userid. (Example).
  • Files can currently stay here for at least 30 days.
  • File size is unlimited.
  • Files in /scratch are not backed up.

  
  

• To check your quota (disk) usage on your home dir , use the quota command.
  • typing quota without any flags will not print any output if you are under both size and no. of files quotas.
  • typing quota -v will show something like the following:

    Disk quotas for someuser (uid 100):
    Filesystem     usage  quota  limit    timeleft  files  quota  limit    timeleft
    /u/home          12  50000  60000                  3   2000   2100            
    

    The usage and files column will show you where you are at compared to each quota column respectively. A usage/files number greater than the quota number will generate warnings at login. If either number is over it's respective limit number, the system will not allow you to create new files.

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