Asnodename
Use the asnodename option to allow an agent node to back up, archive, restore, retrieve, and query data on behalf of a target node.
An agent node is a client node that the Tivoli® Storage Manager administrator grants the authority to perform client operations on behalf of a target node. The target node is the client node that the agent node performs the actions for. The administrator uses the grant proxynode command on the Tivoli Storage Manager server to grant this authority.
Agent nodes can be used to distribute the workload of backing up a computer’s volumes, across multiple client systems. Each system that is involved in the backup uses its own agent node name, but the backup data is stored in a common file space that is owned by the target node.
Host |
NODENAME |
ASNODENAME |
Volume |
Server file space |
---|---|---|---|---|
SCORPIO | SCORPIO | TARGET_SCORPIO | \\scorpio\r$ | \\target_scorpio\r$ |
TAURUS | TAURUS | TARGET_SCORPIO | \\scorpio\s$ | \\target_scoprio\s$ |
ARIES | ARIES | TARGET_SCORPIO | \\scorpio\t$ | \\target_scoprio\t$ |
LEO | LEO | TARGET_SCORPIO | \\scorpio\u$ | \\target_scorpio\u$ |
- Register nodes SCORPIO, TAURUS, ARIES, LEO, and TARGET_SCORPIO.
- Grant nodes SCORPIO, TAURUS, ARIES, and LEO proxy authority to node TARGET_SCORPIO
When you back up or archive data without the asnodename option, the backed up data is stored in a file space on the Tivoli Storage Manager server that matches the UNC name of the drive on which the original data exists.
When you use the asnodename option to back up data on behalf of a target node, the data is stored in a file space that is owned by the target node. However, instead of using the host name in the file space name, the target node name is used in the file space name. For example, if node TAURUS backs up data on SCORPIO's S drive and sets the asnodename option value to -asnodename=target_scorpio, the backup data is stored in a file space named \\target_scorpio\s$. The file space is owned by the TARGET_SCORPIO node.
When you restore or retrieve data, the default behavior is to restore or retrieve the data to a location that matches the file space name.
Continuing with the preceding example, if node SCORPIO uses -asnodename=target_scorpio to restore data from \\target_scorpio\s$, Tivoli Storage Manager attempts to restore the data to the S drive on a computer named TARGET_SCORPIO. This operation does not produce the expected result because, in this sample configuration, there is no computer that is named TARGET_SCORPIO.
dsmc restore \\target_scorpio\s$\users\andy\education\* s:\
-subdir=yes -asnodename=target_scorpio
- Restrictions:
- You cannot use asnodename with the backup nas command.
- You cannot use asnodename with the fromnode option.
- If you use asnodename to backup and restore volumes that are in a cluster configuration, do not use clusternode yes.
- You cannot use asnodename to back up or restore system state.
- If an agent node restores data from a backup set, the system state object in the backup set is not restored.
- You can use asnodename with the backup image command, but you must specify the volume by UNC name. You cannot use the drive letter.
- If you use the same asnodename value to back up files from different machines, you need to keep track which files or volumes are backed up from each system so that you can restore them to the correct location.
Supported Clients
This option is valid for all Windows clients.
Options File
Place this option in the dsm.opt file. You can set this option on the General tab of the Preferences editor.
Parameters
- targetnode
- Specifies the node name on the Tivoli Storage Manager server under which you want to back up or restore data.
Examples
- Options file:
- asnodename target_scorpio
- Command line:
- This command backs up the entire F: drive to a server file space
named \\target_scorpio\f$.
dsmc incremental f: -asnodename=target_scorpio
This option is not valid in interactive mode, but it can be defined in the options portion of a schedule definition.