Installation and User's Guide

Restoring an imageIf the junction metadata is not restored, Tivoli Storage Manager creates a directoryunder the Dfs root using the same name as that of the junction point and restoresthe data in that directory.Related tasks“Microsoft Dfs file protection methods” on page 159There are some items to consider before you begin restoring images on yoursystem.Before you restore an image (offline or online), you must have administrativeauthority on the system.Here is a list of items to consider before you restore an image:v Restoring the image of a volume restores the data to the same state that it wasin when you performed your last image backup. Be absolutely sure that youneed to restore an image, because it replaces your entire current file system orraw volume with the image on the server.v The image restore operation overwrites the volume label on the destinationvolume with the one that existed on the source volume.v Ensure that the volume to which you are restoring the image is at least as largeas the image that is being restored.v The file system or volume you are restoring to does not have to be the sametype as the original. The volume does not even have to be formatted. The imagerestore process creates the appropriately formatted file system for you.v Ensure that the target volume of the restore is not in use. The client locks thevolume before starting the restore. The client unlocks the volume after therestore completes. If the volume is in use when the client attempts to lock thefile system, the restore fails.v You cannot restore an image to where the Tivoli Storage Manager client programis installed.v If you created an image of the system drive, you cannot restore the image to thesame location because the client cannot have an exclusive lock of the systemdrive. Also, because of different system component configurations, the systemimage might not be consistent across components (such as Active Directory).Some of these components can be configured to use different volumes whereparts are installed on the system drive and others to non-system volumes.v If you have run progressive incremental backups and image backups of your filesystem, you can perform an incremental image restore of the file system. Theprocess restores individual files after the complete image is restored. Theindividual files restored are those backed up after the original image. Optionally,if files were deleted after the original backup, the incremental restore can deletethose files from the base image.Deletion of files is performed correctly if the backup copy group of the TivoliStorage Manager server has enough versions for existing and deleted files.Incremental backups and restores can be performed only on mounted filesystems, not on raw logical volumes.v If for some reason a restored image is corrupted, you should run chkdsk to checkfor and repair any bad sectors (unless the restored volume is RAW).You can use the verifyimage option with the restore image command to specifythat you want to enable detection of bad sectors on the destination targetChapter 5. Restoring your data 181