Installation and User's Guide

Table 20. Planning your backupshhhhhDecide whether you want to back up or archive files. See “When to back up andwhen to archive files” on page 105 for more information.See “Pre-backup considerations (Windows)” on page 106 for important migrationinformation, and how you might increase performance before backing up filesand directories.Create an include-exclude list to specify files and directories you want to excludefrom backup services. See “Control processing with an include-exclude list” onpage 110 for more information.Decide what type of backup you want according to your needs. See the followingsections for more information:v “Incremental, selective, or incremental-by-date backups (Windows)” on page112v “Backing up files from one or more file spaces for a group backup (Windows)”on page 118v “Backing up system objects (Windows XP)” on page 122v “Backing up Windows system state” on page 123v “Backing up Automated System Recovery files” on page 125v “Image backup” on page 130v “Back up NAS file systems using Network Data Management Protocol” onpage 135For additional backup considerations, see “Backup (Windows): Additionalconsiderations” on page 154.Understanding which files are backed upWhen you request a backup, Tivoli Storage Manager backs up a file if somerequirements are met.The following are the requirements that must be met for Tivoli Storage Manager toback up a file.v The selected management class contains a backup copy group.vvvvvThe file meets the serialization requirements defined in the backup copy group.If serialization is static or shared static, and the file changes during backup, thefile will not be backed up.The file meets the mode requirements defined in the backup copy group. If themode is modified, the file must have changed since the last backup. If the modeis absolute, the file can be backed up even if it does not change.The file meets the frequency requirements defined in the backup copy group.The specified minimum number of days since the last backup must elapse beforea file is backed up.The file is not excluded from backup by an exclude statement.The file is not excluded from backup by the operating system. These excludedfiles can be found in registry subkey HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\BackupRestore\FilesNotToBackup.Files that are part of the Windows system state (system objects on Windows XP)are eligible for backup only when performing a system state backup. You can backup the system state only as a single entity because of dependencies among thesystem state components. You can not back up or restore the files individually. For98 IBM Tivoli Storage Manager for Windows Backup-Archive Clients: Installation and User's Guide