Adaptec APA-358 User Manual download pdf (Page 115)

SnapBack Live! 115

Update the Model Workstation

Configure whatever changes are necessary on the model

machine. These can include new software and data

installations, configuration changes, or application

deletions.

Create the Differential Backup

Make a SnapBack Dup backup of the workstation as usual,

except select “New SnapBack Dup Differential Image”.

You will be prompted to select a base image and a name for

the differential image.

Dup will create a backup image consisting only of those

sectors that are different from the sectors in the base image.

This can be used in conjunction with compression to create

remarkably small image files.

Restoring a Differential Image

Differential images appear on the standard Dup image

selection menu and are processed in the usual manner.

During restore, Dup will fetch unchanged sector images

from the base file and changed sectors from the difference

file.

Controlling Image Placement

Dup normally stores differential and base images in the

same directory on the file server. You can change the

storage locations using the “/BASE” and “/IMAGE”

command line options. See the section “SnapBack Dup

Command Options” for a complete description.

DUP

If you place base images in a different directory, you must

move them from the image directory to the base directory.

During backup and restore, Dup displays images from both

areas.

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Adaptec APA-358 User Manual Page 115