IBM T400F manual World Wide Names, Physical Characteristics of the Fibre Channel Interface

Models: T400F T400

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World Wide Names

Each Ultrium 2 Tape Drive has an 8-byte World Wide Node Name and an 8-byte World Wide Port Name that is assigned by IBM Manufacturing. The World Wide Node Name identifies the drive’s SCSI logical unit; the World Wide Port Name identifies the physical port on the drive. An enclosure queries the World Wide Names through the LDI or RS-422 interface; a server queries the Names through the Fibre Channel interface. The Ultrium 2 Tape Drive reports the World Wide Names to switches. You can use the World Wide Node Name or Wide Node Port Name to uniquely identify the drive on a SAN.

When your Ultrium 2 Tape Drive is installed in a tape library, you can change the World Wide Node Name and World Wide Port Name through the LDI or RS-422 interface. For instructions, refer to the documentation for your tape library.

Physical Characteristics of the Fibre Channel Interface

The Ultrium 2 Tape Drive attaches to Open Systems servers by using short-wave, multimode fiber optic cables. All cables feature LC-duplex connectors and are designated as 50/125 (50 refers to the diameter of the optical fiber and 125 refers to the diameter of the cable; both are measured in micrometers).

For a list of available cables, see Appendix A, “Tools and Supplies” on page 95.

Installing, Removing, or Resetting a Drive on an Active Fibre Channel

A Fibre Channel network supports dynamic drive attachment. When adding, removing, or resetting a drive on an active server or SAN, perform the following steps:

1.Quiesce the drive. The drive to be added, removed, or reset must not be involved in activity.

2.Connect or disconnect the Fibre Channel cables to or from the drive.

8IBM TotalStorage LTO Ultrium 2 Tape Drive

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IBM T400F manual World Wide Names, Physical Characteristics of the Fibre Channel Interface