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World Wide Names
Each Ultrium Tape Drive has an 8-byte World Wide Name that is assigned by IBM
Manufacturing. The World Wide Name identifies physical drive ports. An enclosure
queries the World Wide Name through the RS-422 interface; a server queries the
Name through the Fibre Channel interface. The Ultrium Tape Drive reports the
World Wide Name to switches. You can use the World Wide Name to uniquely
identify the drive on a SAN.
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.
Chapter 1. Introduction 5
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