Where to enter the dump command
You can enter the dump command through a Remote Shell connection, such as through the rsh command, through a Telnet session accessing the storage system console, or through the storage system console directly.
Specifying the backup level
You can specify a backup level for your dump command, based on which all files or only the most recently changed files are to be backed up to tape.
Improving incremental dump performance Data ONTAP 7.3 and later provide an improved incremental dump performance, if you enable the i2p option on the volume to be backed up. You can accomplish this by setting the volume option no_i2p to off.
Backing up all data that is not in a qtree
You can back up all data in a specified volume that is not in a qtree. The specified volume is the dump path. You use this method if you back up on a qtree basis and want to back up the remaining data in a volume. Usually, the data in qtrees changes frequently, while the remaining data, such as configuration files, changes rarely.
Excluding specified files and directories
You can exclude a list of files and directories from a backup. You can also specify a pattern based on which you can exclude files and directories from a backup. For example, you can exclude the files that end with .core.
Specifying the tape file size
You can specify the maximum size of the tape file in terms of tape blocks in a dump command. If you do a remote backup or plan to restore the backup on a system other than the storage system that was backed up, you might need to specify a tape file size.
Appending backups to tapes
If you are backing up small volumes, qtrees, or files, you can put several backups on one tape to conserve tapes. Also, adding each backup to the tape after the previous backup ensures that backups are sequential.
Checking the status of a dump backup
During a lengthy dump session, you are advised to monitor the progress and check the status of the session. This helps you to determine if the backup is proceeding as expected.