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Tivoli Storage Manager for Windows Backup-Archive Clients Installation and User's Guide

Performing an Image Backup (Windows 2000 Only)

From your local workstation, you can back up one or more volumes as a single object (image backup) on your system. These volumes can be formatted FAT, FAT32, NTFS, or unformatted RAW volumes. If a volume is NTFS-formatted, only those blocks used by the file system will be backed up.

An image backup provides the following benefits:

The traditional offline image backup prevents access to the volume by other system applications during the operation.

For Windows 2000 only: If the Tivoli Storage Manager Logical Volume Snapshot Agent (LVSA) is installed and configured, Tivoli Storage Manager performs an online image backup during which the volume is available to other system applications. The Tivoli Storage Manager LVSA maintains a consistent image of a volume during online image backup. To install or configure the Tivoli Storage Manager LVSA:

  1. Select Setup Wizard > Utilities from the Tivoli Storage Manager GUI main window. The Client Configuration Wizard appears.
  2. Select Help me configure the TSM Logical Volume Snapshot Agent and click the Next button. The Logical Volume Snapshot Agent Wizard panel appears.
  3. Select the task you want to perform. You can install the LVSA, update the LVSA after upgrading the backup-archive client, or remove the LVSA from your system.
  4. Complete each panel in the wizard and click the Next button to continue. To return to a previous panel, click the Back button. To display help information for a panel, click the Help button.

You can use the imagetype option with the backup image command or the include.image option to specify whether to perform an offline or online image backup. See Imagetype for more information.

Before You Perform an Image Backup

Before you perform an image backup, please consider the following:

Incremental-by-Date of Last Image Backup

You can perform an incremental-by date image backup to back up files that have changed since your last image backup. The following restrictions apply:

Performing an Image Backup Using Command Line Client

Use the backup image and restore image commands to perform offline or online image backup and restore operations on a single volume. See Backup Image and Restore Image for more information.

Use the mode option with the backup image command to perform an incremental-by-date image backup that backs up only new and changed files after the last full image backup. However, this only backs up files with a changed date, not files with changed permissions. See Mode for more information.

You must assign a mount point or drive letter for the volume on which you want to perform an image backup. Tivoli Storage Manager will not back up a volume without a drive letter or mount point.

Performing an Image Backup from the GUI

To create an offline or online image backup of your file system or raw logical volume, perform the following steps:

  1. Click on the Backup button in the Tivoli Storage Manager main window. The Backup window appears.
  2. Expand the directory tree and select the objects you want to back up. To back up a raw logical volume, locate and expand the RAW directory tree object.
  3. Click Backup. The Backup Task List window displays the backup processing status. The Backup Report window displays a detailed status report.

Considerations

Image Backup Example

The following is an example of how you can use image and incremental backups together:


Client Server
Monday Files 1, 2 and 3 reside here. An image backup is performed. (Assume a full incremental was also performed.)
Tuesday File 4 is created. Daily incremental is performed - including incremental for file 4.
Wednesday File 2 is deleted; file 3 is changed. Daily incremental is performed - including incremental for file 3.
Thursday File 1 is deleted. Daily incremental is performed.

Suppose you want to use the image created on Monday to restore your file system as it appeared just after Thursday's incremental backup. You would enter the following command:

dsmc restore image m: -incremental -deletefiles

Tivoli Storage Manager would then use the following process:

  1. The server sends the image backup to the client. This image replaces the current content of the target file space. The file system now contains files 1, 2 and 3. File 4 has been lost because it was not part of the original image.
  2. Based on the information from the server about subsequent incremental backups, the client removes files 1 and 2.
  3. The client restores file 4.
  4. The client restores the latest version of file 3.


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