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Backups & Restores

Backups

The CSE Department runs nightly backups of all instructional servers, home directories, and D:\ drives. Backed up data is retained for 10 months, at which time it is overwritten. Hourly and nightly "checkpoints" (also known as "snapshots") of each UNIX home directory (the Z:\ drive in Windows) are also maintained. Hourly checkpoints are available for 24 hours, nightly checkpoints for 7 days.

Please note that the D:\ drive can only be backed up if the computer is powered on. Computers that are powered off cannot be backed up.

Restores

Restoring data less than 7 days old: If the file(s) to be restored were removed or changed less than 7 days prior to the restore, users may restore the files from the .ckpt directory. .ckpt directories are accessible from UNIX:

  • UNIX: Execute the command cd .ckpt from anywhere in the user's home directory.
  • Windows: Open Windows Explorer and go to computer, right click on Z: drive and click properties. Click on the previous versions tab in the properties menu, and select a version from a time before the change was made and copy the file you need.

Note: the .ckpt directory is virtual and not visible in any directory listing.

The .ckpt directory contains 30 subdirectories named with the date and time the snapshot was taken. Users may navigate to the appropriate subdirectory and copy the appropriate files back to their original location.

Restoring data more than 7 days old: Files removed or changed more than 7 days prior to the restore must be retrieved from tape storage by a CSE computing staff member. Requests for restores of this kind should be directed to the Help Desk. Please be sure to include the following information in your request:

  • Name of the file to be restored.
  • Full path to the original location of the file.
  • Date the file should be restored from.

Restoring data stored outside your home directory: Restores for data stored locally on the D:\ drive, or in shared file spaces (S:\, K:\, L:\ or X:\ drives, /submit, /project, etc.) must also be handled by a CSE staff member. Requests for restores of this kind should be directed to the Help Desk. Please be sure to include the following information:

  • Name of the file to be restored.
  • Full path to the original location of the file.
  • Date the file should be restored from.

Off-site Storage

Each week, copies of backed up data are transferred to a secure, off-campus location. In case of a catastrophic event, data may be retrieved and restored from these off-site copies.