IBM T400F Address Assignments, Installing, Removing, or Resetting a Drive on an Active SCSI Bus

Models: T400F T400

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Address Assignments

Each device on a SCSI bus must have a SCSI identifier (ID) that identifies it to the server. When you install the Ultrium 2 Tape Drive, you can specify its SCSI ID in one of three ways:

vBy attaching jumpers to the SCSI ID connector

vBy using your enclosure’s SCSI ID switch

vIf you are installing the drive into a tape library, by setting the SCSI ID through the LDI or RS-422 interface

For more information, see “Setting the SCSI ID (SCSI Drive Only)” on page 17.

Installing, Removing, or Resetting a Drive on an Active SCSI Bus

You can attach an Ultrium 2 Tape Drive to an active SCSI bus. However, the preferred and safest method of adding, removing, or resetting a drive is to power-off the system.

When adding, removing, or resetting a drive on an active SCSI bus, perform the following steps:

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

2.Disconnect power to the drive.

3.Connect or disconnect the SCSI bus cables to or from the drive’s SCSI connector. Ensure that the SCSI bus remains intact from the server (initiator) to the terminator throughout the connection or disconnection process.

Note: Changing or moving the terminator disrupts the continuity of the SCSI bus and interrupts any process on the bus.

Chapter 1. Introduction 5

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IBM T400F manual Address Assignments, Installing, Removing, or Resetting a Drive on an Active SCSI Bus