Installation guide

Configuring Your IP4700 Device for Use with Backup Software
37
Configuring Veritas NetBackup Software
Setting Up Storage
Units and Classes
You set up storage units and classes the same way you do for
standalone tape drives. Refer to the sections about creating a storage
unit and class for standalone tape drives. The only difference is that
you need one storage unit for drives of the same type on each SP. In
our example, we need a storage unit on SP A for its two tape drives
and another storage unit on SP B for its two tape drives. When setting
up classes, you need a class for each SP. Edit the class attributes to call
out the specific storage unit defined on that SP. Then run a few test
backups. For instructions on starting a manual backup, refer to the
section on performing a test backup. The only difference from a
manual backup initiated on a standalone drive is that the robot places
a tape in a drive. If this does not occur, try moving tapes with the
diagnostic command, tsdtest. Depending on the library, the drives
front panel may indicate that a tape is in a drive. You may hear the
library controller move a tape, or the NetBackup Device Monitor may
indicate a tape in a drive.
If you run a backup (class) for a client (NDMP host) that specifies a
storage unit on another NDMP host, a three-way NDMP backup will
occur instead of a local backup to the tape drives. You probably do
not want this to occur because you have a local tape drive; however, if
you do not have local tape drives on an SP, you can backup to tape
drives on a different SP using three-way backup, which is described
in the next section.
Configuring
NetBackup for
Three-Way Backup
To use NDMP three-way backup efficiently, you must specify a
backup policy (class) that meets these criteria:
The client is the NDMP host without a tape drive.
The required storage unit is on an NDMP host with a tape drive.
Using the set_ndmp_attr command, make sure that both NDMP
hosts, that is, both IP4700 SPs, have been set up for NDMP login.
With NDMP three-way backup the NDMP hosts must resolve names
on the network, which requires the IP4700 SPs to be configured
properly. To ensure this, use the IP4700 management user interface
and follow the recommended procedures to provide the name of a
DNS or NIS server. Note that you must enter information in the
Windows Domain setting even though you might not be using this
feature.