Backups & Restores

Filesystem Snapshots

Your home directory is backed up each day using a ZFS snapshot. Projects disks that are hosted on the main BSOE file server are also backed up using snapshots in the same way. We currently keep 7 daily snapshots, 4 weekly snapshots, 12 monthly snapshots and 7 yearly snapshots. Please contact the BSOE IT staff by e-mailing to request data retrieval from a snapshot.


We run Bacula to back up many smaller file systems, virtual machines and servers. If you would like a file system to be backed up using Bacula, please e-mail and be sure to mention that you want it backed up via the BSOE's Bacula program. Please request Bacula restores the same way.

Tape Backups

Historically, we have maintained tape backups of many UNIX and Linux servers, including user home directories and research file systems. Backing up to tape is being phased out, and we will retain existing tape backups for a period of time for archival purposes. If you need files restored from a tape backup, please e-mail Be sure to include the full file name(s) that you want restored, the oldest acceptable date that you'd like it restored from, and the date when you believe you deleted or improperly modified the file you want restored.

Data Storage

This data is provided through secure networks to servers and workstations in the BSOE. The data is backed up in 3 levels:

  1. First it is on RAID-Z2 ZFS arrays, and can lose two disks without data loss
  2. Snapshots of the data are created daily, and available to the users to restore any files that are lost
  3. Snapshots are mirrored to an offsite secure server, in the event of a data center disaster

User accounts are provisioned with quota's based on account type and outlined on the quota page. Research data is provided on a recharge basis, and is available in the GB to TB range (current rates are availble here). The servers are subject to all policies outlined in the UCOP IS-3 document.