the node with the REGISTER NODE command. For more information, see the

REGISTER NODE and UPDATE NODE commands in the Administrator’s

Reference.

To help you tune the use of your LAN and SAN resources for LAN-free data

movement, you can control the path that data transfers take for clients that
have LAN-free data movement capability. For each client, you can select
whether data read and write operations use:

v The LAN path only

v The LAN-free path only

v Either path

You can specify these settings with the REGISTER NODE and UPDATE NODE

commands.
Be aware that if the node belongs to a multi-threaded client and there are
drives available, the MAXNUMMP parameter may restrict the number of
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. Configuring Devices for the Storage Agent to Access
This section provides information to help you define paths from the storage agent
to the drives that are available to the Tivoli Storage Manager server. Paths allow a
client, by means of a storage agent, access to drives in a library. The requirements
are different depending on the device you are using.
Consider the following guidelines before you begin defining paths to your SAN
drives:

v Yo u must have the names of your tape and drive devices. See “Obtain Device

Information” on page 15 for details on how to obtain this information if you
have not already done so.

v Paths from the storage agent to each drive that the storage agent will be allowed

to access must be defined on the library manager. There must be a path defined
from the library manager to each drive in order for the storage agent to use the
drive.

v Review tape device names. For the same tape device, the device name as known

to the server will probably not match the device name as known to the storage

agent.

Figure 8 on page 27 shows the results of completing this step.

26 IBM Tivoli Storage Manager for SAN for AIX: Storage Agent User’s Guide
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