To create a tape backup, use the Windows NT backup and restore utility.
To create a backup of all the files on a disk:
For more information refer to the Windows NT online help.
To reduce recovery time after a crash, use an incremental backup strategy where level 0 refers to a full backup, and levels 1 through 9 refer to incremental backups. A level n backup backs up only those files that have changed since a level (n-1) backup. After a level n backup, the next backup to be taken will be a level (n+1) backup.