The File System Managing Your Disk Space Accounts consume disk space as files are created, copied, edited and mail is sent and received.
Disk space is a limited resource and various methods are used to manage it.
Disk space is used as needed and is managed by the group. These areas are available to everyone on the cluster on a first come, first serve basis. When a file is edited or modified, the expiration date is reset. Note that the cleanup procedure does not run on the weekends, so files that expire on a Saturday or Sunday will not be removed until Monday night. The scratch disk is not backed up and any file lost from the scratch disk cannot be restored.