Installation and User's Guide

using the corresponding backup commands. Because you cannot restore animage backup to the volume from which the client is currently running (or anyvolume for which an exclusive lock cannot be obtained) you should install yourclient program on the system drive.Note: When using WinPE, an image restore of the system drive is possible. SeeTivoli Storage Manager Recovery Techniques Using Windows PreinstallationEnvironment (Windows PE) for more information.v If bad disk sectors are detected on the source drive during a LAN-free orLAN-based image backup, data corruption can occur. In this case, bad sectorsare skipped when sending image data to the Tivoli Storage Manager server. Ifbad disk sectors are detected during the image backup, a warning message isissued after the image backup completes.Related conceptsChapter 9, “Storage management policies,” on page 235Related reference“Exclude options” on page 366“Include options” on page 395“Snapshotproviderimage” on page 474Utilizing image backups to perform file system incrementalbackupsThis topic lists the methods and steps to use image backups to perform efficientincremental backups of your file system.These backup methods allow you to perform a point-in-time restore of your filesystems and improve backup and restore performance. You can perform thebackup only on formatted volumes; not on raw logical volumes.You can use one of the following methods to perform image backups of volumeswith mounted file systems.Method 1: Using image backups with file system incrementalbackupsThis topic lists the steps to perform image backups with file system incrementalbackup.1. Perform a full incremental backup of the file system. This establishes a baselinefor future incremental backups.2. Perform an image backup of the same file system to make image restorespossible.3. Perform incremental backups of the file system periodically to ensure that theserver records additions and deletions accurately.4. Perform an image backup periodically to ensure faster restore.5. Restore your data by performing an incremental restore. Ensure that you selectthe Image plus incremental directories and files and Delete inactive filesfrom local options in the Restore Options window before beginning the restore.During the restore, the client does the following:v Restores the most recent image on the server.vDeletes all of the files restored in the previous step which are inactive on theserver. These are files which existed at the time of the image backup, but weresubsequently deleted and recorded by a later incremental backup.132 IBM Tivoli Storage Manager for Windows Backup-Archive Clients: Installation and User's Guide