From CCRMA Wiki
Your home directory is backed up automatically each day to backup server. You can access these daily images by going to:
There, you will see directories with names like '
20070804,' which corresponds to the date of the backup.
Inside this directory you'll see another directory named '
tree' corresponds to your home directory. So, in side it you'll see all the files and dictories backed up on that date. This is an 'image' or snapshot of what your home directory looked like at backup time. Backups are taken sometime between midnight and 8am generally.
You can read from (copy from) these directories, but cannot write to them.
The backup images are deleted over time inside a 3 month window according to the following schedule:
|0-2 weeks||2 - 5 weeks||5 - 12 weeks||beyond 12 weeks5|