Windows NT File Backup
Users with read or backup permission can backup specific files. On NT server, users who are members of the Server Operators group can back up files. On NT workstation, other users who can backup any files include:
- Users who are in the local Backup Operators group.
Microsoft Backup strategy
When choosing backup strategy consider what data requires backup, whether it is stored in a central location or if it resides on several computers, and how often the data should be backed up. The registry and the SAM on the domain controller should be backed up daily.
Types of Backups
- Normal - Saves files and folders and shows they were backed up by setting the archive bit.
- Copy - Saves files and folders without setting the archive bit.
- Incremental - Saves files and folders that have been modified since the last backup. The archive bit is set.
- Differential - Saves files and folders that have been modified since the last backup. The archive bit is not set..
- Daily - Saves files and folders that have been changed that day. The archive bit is not set.
Microsoft Backup Terms
- Backup Set - The group of files and directories that are stored on a tape during one backup session. Multiple backup sets may be stored on a tape.
- Family Set - Tapes that the backup set is stored on.
- Catalog - The list of directories and files stored on the backup set. It is stored on the last tape in the set.
- Backup Log - The log file for the backup which records the backup details including the date and files backed up.
- Append - Puts the new backup set after the previous set on the tape.
- Replace - Old backup sets are overwritten by the new backup.
- Verify after backup - Verifies whether the files were accurately saved on the tape.
- Backup Registry - Allows the system registry to be backed up.
- Restrict Access - Only allows administrators, backup operators, or the tape owner to use the tape for file recovery.
- Hardware Compression - Allows the backed up data to be compressed on the tape.
The registry cannot be restored remotely on a computer, but files may.