Reconfiguring Tivoli Storage Manager to optimize clustered backups

If you configured Tivoli® Storage Manager to back up NetApp clusters by using node-scoped NDMP, you can reconfigure Tivoli Storage Manager to use NDMP Cluster Aware Backup (CAB). In this way, you can optimize backup operations for NetApp clusters.

Before you begin

For an overview of NDMP functionality in Tivoli Storage Manager and NetApp file servers, see technote 7046965. This technote also lists system requirements.

About this task

When you reconfigure Tivoli Storage Manager to use CAB, you can optimize backup operations in the following ways:

You can configure Tivoli Storage Manager to back up all volumes in a NetApp cluster to a directly attached tape device or to a Tivoli Storage Manager server. In both cases, the data is owned by a single Tivoli Storage Manager node. Even if you move volumes within the cluster, backup operations continue and no reconfiguration is required.
You can complete a partial backup of a NetApp cluster to a Tivoli Storage Manager server. This method is useful when multiple organizations own data in the cluster. Each organization can manage backup operations for its data. You set the scope of a partial backup by specifying a NetApp storage virtual machine (SVM), which provides access to part of a cluster.

To reconfigure Tivoli Storage Manager to use CAB, you must define a new Tivoli Storage Manager node and a new data mover.

Procedure

Verify that NetApp Clustered Data ONTAP 8.2 or later is installed on the NetApp file server.
Enable the use of NDMP by following the instructions in the Clustered Data ONTAP® Data Protection Tape Backup and Recovery Guide. Take one of the following actions:
For a full cluster backup
Complete the following steps:
1. Enable SVM-scoped NDMP backup operations at the cluster level. In this way, you disable node-scoped NDMP backup operations on the NAS file server. Ensure that the node-scoped-ndmp option on the NAS file server is set to OFF.
2. Create a backup user ID for NDMP operations.
3. Configure a network interface for NDMP control connections at the cluster level.
For a partial cluster backup
Complete the following steps:
1. Enable SVM-scoped NDMP to control NDMP backup operations.
2. Create a backup user ID for NDMP operations.
3. Configure a network interface for NDMP control connections at the SVM level.
Register the Tivoli Storage Manager node that will own the backup data. On the Tivoli Storage Manager server, issue the REGISTER NODE command:
```
register node node_name password domain=nas_domain type=nas
```
where node_name specifies the node name, password specifies the node password, and nas_domain specifies the domain of the node.
If you plan to back up a full cluster, determine the IP address of the NetApp intercluster interface on the NAS file server. The interface must provide access to the entire cluster. On the NAS file server, issue the following Data ONTAP operating system command:
```
network interface show -role intercluster
```
This value is required when you specify the HLADDRESS parameter in step 6.
If you plan to back up a partial cluster, determine the numerical IP address or the domain name of the cluster interface that is used by the SVM. To determine the value, issue the following Data ONTAP operating system command on the NAS file server:
```
network interface show -vserver vserver_name -role data
```
where vserver_name specifies the name of the SVM. This value that you obtain is required in step 6.
Define a data mover for the Tivoli Storage Manager node. Take one of the following actions:
For a full cluster backup
Define a data mover for the Tivoli Storage Manager node that will own the backup data. On the Tivoli Storage Manager server, issue the DEFINE DATAMOVER command on one line:
```
define datamover data_mover_name type=nascluster
hladdress=intercluster_interface lladdress=port 
USER=user_name password=password dataformat=netappdump
```
where intercluster_interface is the value that you obtained in step 4 and data_mover_name is the node name that you registered in step 3.
Tip: After you define the data mover, additional data movers are defined automatically for each node in the cluster. The name of each data mover matches the name of the physical node in the cluster. You will use these data movers when you define paths to tape drives that are attached to the cluster.
For a partial cluster backup
Define a data mover for the node by issuing the DEFINE DATAMOVER command and specifying TYPE=NASVSERVER. On the Tivoli Storage Manager server, issue the following command on one line:
```
define datamover data_mover_name type=nasvserver
hladdress=svm_data_interface lladdress=port 
USER=user_name password=password dataformat=netappdump
```
where svm_data_interface is the value that you obtained in step 5 and data_mover_name is the node name that you registered in step 3.
For information about specifying the other parameters on the DEFINE DATAMOVER command, see DEFINE DATAMOVER (Define a data mover).
To back up data to a directly attached tape device, for each tape drive that is attached to the cluster, identify the device name and the physical node to which the drive is attached:
1. On the NAS file server, issue the following Data ONTAP command:
```
storage tape show-tape-drive
```
2. Review the output to find the serial number of the tape drive, and the node of the cluster to which the drive is attached. The same stanza includes the device name, for example, st1, st2, or st3.
To configure a full cluster backup to a directly attached tape device, follow the instructions in Configuring tape devices for full cluster backups.
To configure a full or partial cluster backup to a Tivoli Storage Manager server, configure a policy for managing NAS image backups. Follow the instructions in Configuring a Tivoli Storage Manager policy for NDMP operations.
Disable scheduled backup operations for all nodes that were previously used to back up the NetApp cluster.
Identify the volumes in the cluster and optionally schedule backup operations for the volumes. Take one of the following actions:
For a full cluster backup
1. On the NAS file server, identify the volumes in the cluster by using the following Data ONTAP command:
```
volume show
```
2. Run a full backup of the entire cluster.
3. Optional: To schedule backup operations, follow the instructions in Scheduling NDMP operations.
For a partial cluster backup
1. On the NAS file server, identify the volumes in the cluster by using the following Data ONTAP command:
```
volume show -vserver vserver_name
```
  where vserver_name specifies the name of the SVM.
2. Run a full backup of the partial cluster.
3. Optional: To schedule backup operations, follow the instructions in Scheduling NDMP operations.

What to do next

To verify that volumes in the NetApp cluster are backed up, complete the following steps:

On the Operations Center menu bar, click Clients.
Double-click a NAS device client and click Volumes.
To determine when the last full volume backup was completed, review the information in the Last Full column. To determine when the most recent differential backup was completed, review the information in the Last Differential column.