Backing Up Server And Volume Settings; The Snapdrimage File And The Volume Files - Overland Storage SnapServer Administrator's Manual

SnapServer 7.0 Administrator's Guide
• Reinstalling the SnapServer operating system.
• Restoring the server to its original configuration with data intact.
These files are then used to restore any SnapServer to its original state. The disaster
recovery feature can also be used to clone one server to another by restoring the disaster
recovery image from one server to another server.

Backing Up Server and Volume Settings

In addition to backing up the data stored on the SnapServer, you may also back up the
server's system and volume settings. The Disaster Recovery page allows you to create the
files you need to restore these settings:
• Server-specific settings such as network, RAID, volume and share configurations,
local user and group lists, snapshot schedules, and Snap EDR Management Console
settings (if applicable).
• Volume-specific settings such as ACLs, extended attributes, and quota settings.
For information about scheduling these tasks, see
page 2-13.

The SnapDRImage File and the Volume Files

Details on the SnapServer disaster recovery files and the information they contain are as
follows:
• SnapDRImage – The SnapServer disaster recovery image saves server-specific
settings such as network, RAID, volume and share configuration, local user and group
lists, and snapshot schedules, and Snap EDR Management Console settings (if
applicable). There is one SnapDRImage file per server, residing in the
directory on the root of the first volume in Traditional RAID, or on the root of the first
volume on the first storage pool in Dynamic RAID.
NOTE: The SnapDRImage file is in binary form and can be safely used only with the
• Volume-specific files – These files, named backup.acl, backup.qta.groups, and
backup.qta.users, preserve volume-specific settings such as ACLs, extended
attributes, and quota settings. One set of these files exists per volume, and are located
as follows:
• In Traditional RAID, the volume settings specific to each volume are stored in the
• In DynamicRAID, the volume settings for an entire storage pool are stored in the
CAUTION:
the volume-specific files when the snapshot is taken. If you do not use snapshots to back up
a volume to tape, you must manually regenerate these files whenever you change ACL or quota
information to ensure that you are backing up the most current volume settings.
10400317-001 10/2011
SnapServer Disaster Recovery tool. Other tools will not work and may compromise the
integrity of the file.
directory on the root of each volume.
.os_private
directory on the first volume of the storage pool.
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The Create Recovery Files option in the snapshot feature automatically updates
©2010-11 Overland Storage, Inc.
"Scheduling Data Protection Tasks" on
9 – Maintenance
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9-5