You can access a "Snapshot" system of on-line backups. This allows all ENCS users to recover deleted files and directories without intervention from System Administrators. "Snapshots", which are frozen, read-only copies of your files on network shares, are created at regular intervals.
Please refer to the following web page for instructions on recovering deleted files:
http://www.encs.concordia.ca/helpdesk/common encs_snapshot.html
Note: These files DO NOT count towards your total disk quota usage.