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Administrator's Guide


Using Device Alias Names

The server uses alias names to identify tape and optical disk devices to the Tivoli Storage Manager device driver. Device names for the Tivoli Storage Manager device driver differ from device names for the Windows device driver. For example, an automated library device might be known as LB0.0.0.1 to the Tivoli Storage Manager device driver and as LIB01 to the Windows device driver.

If you use the Device Configuration Wizard to initially configure devices, the wizard automatically provides the appropriate device name. However, if you configure devices by using Tivoli Storage Manager commands, you must provide the device names as parameters to the DEFINE PATH command. If you modify device driver control, you may need to provide alias name information in the Device Exclude List. The names can be either:

Obtaining Device Alias Names describes the procedure for using the Tivoli Storage Manager Console to obtain device names.

Alias names replace the real device names in Tivoli Storage Manager commands and screens. The Tivoli Storage Manager device driver communicates with devices by using the alias names. See Obtaining Device Alias Names.

Alias names appear in the form mtx.y.z.n or lbx.y.z.n or opx.y.z.n, where:

mt
Indicates the device is a tape device. For example:

mt3 (Tape drive at SCSI ID 3, LUN 0, bus 0, port 0)

mt5.0.0.1 (Tape drive at SCSI ID 5, LUN 0, bus 0, port 1)

lb
Indicates the device is the controller for an automated library device. For example:

lb4.1 (Library at SCSI ID 4, LUN 1, bus 0, port 0)

op
Indicates the device is an optical device. For example:

op4 (Optical drive at SCSI ID 4, LUN 0, bus 0, port 0)

x
Indicates the SCSI ID for the targeted device

y
Indicates the logical unit number (LUN) for the targeted device

z
Indicates the bus number supported by the adapter device driver

n
Indicates the port number for the SCSI adapter device driver

Note:
Alias names can be abbreviated when the trailing numbers are zeros.

Obtaining Device Alias Names

If you use the Tivoli Storage Manager Device Configuration Wizard to initially configure devices, this step is unnecessary because the wizard gathers information about the SCSI Target IDs, logical unit numbers, bus numbers, and SCSI port numbers required for the alias names. However, if you add devices using Tivoli Storage Manager commands, you must provide the information in the DEFINE PATH command. To determine the SCSI properties for a device:

  1. From the TSM Console, expand the tree to TSM Device Driver for the machine that you are configuring.
  2. Expand TSM Device Driver and Reports.
  3. Click Device Information. The Device Information view appears. The view lists all devices connected to the server and lists their SCSI attributes in the form of the alias names.

See Using Device Alias Names for an overview of Tivoli Storage Manager device names.


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