Installation and User's Guide

vRestores new and changed files from the incremental backups.Note: If an incremental backup is performed several times after backing up animage, make sure that the backup copy group of the Tivoli Storage Manager serverhas enough versions for existing and deleted files on the server so that thesubsequent restore image with incremental and deletefiles options can delete filescorrectly.Related tasks“Backing up data using the GUI” on page 101“Performing an image backup using the GUI” on page 134“Restoring an image using the GUI” on page 182Method 2: Using image backups with incremental-by-date imagebackupsThis topic lists the steps to perform image backups with incremental-by-date imagebackup.1. Perform an image backup of the file system.2. Perform an incremental-by-date image backup of the file system. This sendsonly those files that were added or changed since the last image backup to theserver.3. Periodically, perform full image backups.4. Restore your volume by performing an incremental restore. Ensure that youselect the Image plus incremental directories and files option in the RestoreOptions window before beginning the restore. This first restores the most recentimage and then restores all of the incremental backups performed since thatdate.Note: You should perform full image backups periodically in the following cases:v When a file system changes substantially (more than 40%), as indicated in step 4of method 1 and step 3 of method 2. On restore, this would provide a filesystem image close to what existed at the time of the last incremental-by-dateimage backup and it also improves restore time.v As appropriate for your environment.This improves restore time because fewer changes are applied from incrementalbackups.The following restrictions apply when using method 2:v The file system can have no previous full incremental backups.v Incremental-by-date image backup does not inactivate files on the server;therefore, when you restore an image with the incremental option, files deletedafter the original image backup is present after the restore.v If this is the first image backup for the file system, a full image backup isperformed.v If file systems are running at or near capacity, an out-of-space condition couldresult during the restore.Related information“Restoring an image using the GUI” on page 182“Performing an image backup using the GUI” on page 134Chapter 4. Backing up your data 133