Using the dump command

Specifying the tape device

About specifying tape devices

You must specify at least one tape device to do the backup. If you specify more than one tape device, each tape device in the list is used in the order listed to write a tape file. If the backup requires more tape files than the number of tape devices specified, the last tape device is used for all remaining tape files.

Caution
If you specify more than one rewind device on the same tape drive, the filer displays a warning and terminates the dump command.

Note
Filer device names might not be valid on remote tape drive hosts. For tape drives attached to remote hosts, use tape device names that follow the host naming conventions.

You can specify two kinds of tape devices: local and remote.

Specifying a local tape device

To specify local tape devices for a backup, complete the following step.

Step	Action
1	Use the `f` option with a list of one or more tape devices, separated by commas, as an argument. Note You cannot combine local and remote tape devices in one command, and you can write to only one remote machine in a command.

Example

The following command specifies that one tape file be written with one device:

Specifying a tape device on a remote filer

To specify tape devices for a backup on a tape drive attached to a remote filer, complete the following step.

Step	Action
1	Use the `f` option with a list of one or more tape devices, separated by commas, as an argument. Do not repeat the remote machine name. Note You cannot combine local and remote tape devices in one command, and you can write to only one remote machine in a command.

Example

The following command specifies that two tape files, one using nrst0a and the other using rst0a, be written on the remote filer named remfil: