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Regular backups are made for the public UNIX systems of Academic Computing,
which includes central systems Nimbus, Polaris, Delta, Belknap, Cascade, and
Brooks, as well as the Northstar public UNIX workstations.
These backups are designed to protect against hardware failures and
short-term emergencies only. They are not permanent archives. If you need to
restore lost files, you should seek help promptly while the backups are still
available.
Most user files are kept in the AFS servers, and a complete snapshot of all
files is made each night (around midnight). These snapshots are kept
online until overwritten by the next one. If you accidentally
delete a file, the most recent backup can be retrieved, as long as you realize
and seek assistance before it gets overwritten at midnight.
Retrieving files from yesterday's backup can be performed without administrator
assistance.
In order to restore a file, we require information about the file, the
machine the file was on, and the date and time the file was damaged or
removed.
To have a file restored, you will need to complete the form on the Central Systems Restore Request Web page. Mail the
completed Central Systems Restore Request form (cut and paste it into an
e-mail message) to the manager of the machine you want to restore files from
(i.e., manager@cascade, manager@northstar,
etc). You will be contacted via e-mail when the files have been restored or if
we encounter problems restoring the files.
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