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

Backup GroupAuthorized UserUse the backup group command to create and back up a group containing a list offiles from one or more file space origins to a virtual file space on the Tivoli StorageManager server.A group backup allows you to create a consistent point-in-time backup of a group offiles that is managed as a single logical entity:v All objects in the group are assigned to the same management class. See“Include options” on page 269 for more information about using the includeoption to bind a group to a management class.v Existing exclude statements for any files in the group are ignored.v All objects in the group are exported together.v All objects in the group are expired together as specified in the managementclass. No objects in a group are expired until all other objects in the group areexpired, even when another group they belong to gets expired.v If you are performing full and differential group backups to a sequential device,during a restore the data will be in no more than two locations. To optimizerestore time, perform periodic full backups to back up the data to one locationon the sequential media.v During a full group backup, all objects in the filelist are sent to the server.During a differential group backup, only data that has changed since the last fullbackup is sent to the server. Objects in the filelist that have not changed sincethe last full backup are assigned as members of the differential group backup.This data is not resent to the server, reducing backup time.The backup group command requires the following options:filelist Specifies a list of files to add to a new group. See “Filelist” on page 250 formore information.groupnameSpecifies the fully qualified name of the group containing a list of files. See“Groupname” on page 259 for more information.virtualfsnameSpecifies the name of the virtual file space for the group on which youwant to perform the operation. See “Virtualfsname” on page 381 for moreinformation.mode Specifies whether you want to back up all of the files in the filelist or onlyfiles that have changed since the last full backup. See “Mode” on page 291for more information.Notes:1. If any file in the group backup fails, the entire group backup will fail.2. Use the query group command to query members of a group backup on theTivoli Storage Manager server. See “Query Group” on page 451 for moreinformation.3. Use the restore group command to restore specific members or all members ofa group backup on the Tivoli Storage Manager server. See “Restore Group” onpage 474 for more information.404 IBM Tivoli Storage Manager for UNIX and Linux: Backup-Archive Clients Installation and User’s Guide