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drives that are available for the storage agent to use on behalf of the client. The
MAXNUMMP parameter is specified on the REGISTER NODE or UPDATE
NODE command.
Step 3. Starting the Storage Agent and Verifying the LAN-free
Configuration
During this step you will start the storage agent and verify the LAN-free
configuration.
Step 3.1 Start the Storage Agent
Start the storage agent by changing to the storage agent directory and issuing the
following command:
dsmsta
Step 3.2 Verify the LAN-free Configuration
To verify that you have configured your system correctly for LAN-free data
movement, perform the following procedure:
1. Run a backup operation from the client. Verify that the backup is LAN-free by
using a Tivoli Storage Manager administrative command-line client to login to
the Tivoli Storage Manager server and storage agent to verify that the proper
sessions have been established. When LAN-free data movement is occurring, a
QUERY SESSION on the storage agent should show bytes received (displayed
as Bytes Recvd) for the node increasing to the total amount of data being
backed up. The QUERY SESSION on the Tivoli Storage Manager server should
show a very small amount of bytes received (metadata) for the same node. If
the node’s session exhibits this behavior, and you receive a message stating that
the backup has been successful, you have configured your system correctly.
There are several ways to use the QUERY SESSION command. You can issue
the command on the storage agent console if the process is running in the
foreground. Or, you can use a command-line client to connect to the storage
agent on the administration port of the storage agent. You would use the same
administrator ID and password for this command as you would on the server.
2. Ensure the following if you receive a message saying that the backup has
failed:
a. The Tivoli Storage Manager server is running. If the Tivoli Storage Manager
server is not running, the storage agent will not start.
b. The client, storage agent, and server are communicating with each other as
expected.
c. The mount and message is displayed on the storage agent console.
Notes:
1. If you retry the backup operation after the first failure, the client attempts to
use the LAN connection for data movement. The client will continue to use the
LAN until the client is stopped and restarted.
2. When using the z/OS data manager server, volumes for sequential access
storage pools that support LAN-free data movement require formatting before
they can be used. LAN-free sessions will fail if the storage pool does not
contain any formatted volumes and does not allow automatic formatting. For
details, refer to the IBM Tivoli Storage Manager for z/OS Administrator’s Guide
and IBM Tivoli Storage Manager for z/OS Administrator’s Reference.
40 IBM Tivoli Storage Manager for SAN for AIX: Storage Agent User’s Guide
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