IBM Tivoli Storage Manager for UNIX and Linux Backup-Archive ...

The last incremental backup time refers to the server time and the file modificationtime refers to the client time. If the client and server time are not synchronized, orthe client and server are in different time zones, this affects incremental-by-datebackup and image backup with mode=incremental.Both full incrementals and incrementals-by-date back up new and changed files.An incremental-by-date takes less time to process than a full incremental andrequires less memory. However, unlike a full incremental, an incremental-by-datedoes not maintain current server storage of all your workstation files because:v It does not expire backup versions of files that are deleted from the workstation.vvvIt does not rebind backup versions to a new management class if themanagement class has changed.It does not back up files with attributes that have changed, such as Accesscontrol list (ACL) data, unless the modification dates and times have alsochanged.It ignores the copy group frequency attribute of management classes.Note: If you have limited time during the week to perform backups, but extra timeon weekends, you can maintain current server storage of your workstation files byperforming an incremental backup with the incrbydate option on weekdays and afull incremental backup on weekends.Supported ClientsThis option is valid for all clients. The Tivoli Storage Manager client API does notsupport this option.Syntax►► INCRbydate ►◄ParametersThere are no parameters for this option.ExamplesCommand line:dsmc incremental -incrbydateIncrementalUse the incremental option with the restore image command to ensure that anychanges that were made to the base image are also applied to the restored image.If you also use the deletefiles option, changes include the deletion of files anddirectories that were in the original image but later deleted from the workstation.Note: Using the incremental option with the restore image command to perform adynamic image backup is not supported.338 IBM Tivoli Storage Manager for UNIX and Linux Backup-Archive Clients Version 6.1: Installation and User’s Guide