Each user is assigned a disk space quota, or allotment, for their home directory when their account is created to insure that there will be sufficient disk space for all our users’ needs.
Once you are over quota, programs may fail to run and you may also be prevented from logging in.
In addition, upon request we can provide additional (often much larger) amounts of “scratch” space, which is generally used for downloaded input data or produced output that doesn’t need to be backed up.
Each user is expected to monitor their own disk usage and to attempt to
stay within their quota. To view your current usage in your home directory
and scratch directory, type quota on the command line.
The best practice is to check your quota occasionally, and if it appears you are nearing your limit, you should see what files you may be able to remove from your account to provide yourself with more disk space.