Backing up NDMP file servers to a Tivoli Storage Manager server

You can back up data to a single Tivoli® Storage Manager server rather than attaching a tape library to each NAS device.

Procedure

To back up a server on a NAS file system, complete the following steps:

Select an existing storage pool or set up a storage pool for the NAS data by issuing the following command:
```
define stgpool naspool disk
```
Define volumes to add to the storage pool. For example, define a volume that is named naspool_volAB:
```
define volume naspool /usr/storage/naspool_volAB formatsize=100
```
Set the copy destination to the storage pool defined previously and activate the associated policy set.
```
update copygroup standard standard standard destination=naspool
 tocdestination=naspool
activate policyset standard standard
```
The destination for NAS data is determined by the destination in the copy group. The storage size estimate for NAS differential backups uses the occupancy of the file space, the same value that is used for a full backup. You can use this size estimate as one of the considerations in choosing a storage pool. One of the attributes of a storage pool is the MAXSIZE value, which indicates that data is sent to the NEXT storage pool when the MAXSIZE value is exceeded by the estimated size. Because NAS differential backups to Tivoli Storage Manager native storage pools use the base file space occupancy size as a storage size estimate, differential backups end up in the same storage pool as the full backup. Depending on collocation settings, differential backups might end up on the same media as the full backup.
Set up a node and data mover for the NAS device. The data format signifies that the backup images created by this NAS device are a dump type of backup image in a NetApp specific format.
```
register node nas1 nas1 type=nas domain=standard
define datamover nas1 type=nas hla=nas1 user=root 
password=***** dataformat=netappdump
```
The NAS device is now ready to be backed up to a Tivoli Storage Manager server storage pool. Paths can be defined to local drives, but the destination that is specified by the management class determines the target location for this backup operation.
Back up the NAS device to the Tivoli Storage Manager storage pool by issuing the following command:
```
backup node nas1 /vol/vol0
```
Restore a NAS device from the Tivoli Storage Manager storage pool by issuing the following command:
```
restore node nas1 /vol/vol0
```