User's Guide

Chapter 2 Emulated Medium Changer SCSI Commands

Move Medium (A5h)

50 Quantum DX-Series Software Interface Guide

Move Medium (A5h) 2

The host uses the Move Medium command to move a tape cartridge from

one element to another within a DX-Series system. The host specifies the

source element and the destination element in the command block. The

DX-Series system then moves the tape cartridge contained in the source

element to the empty destination element.

If the Mode Select Data ADU (auto drive unload) bit is set to 1, and the

source element is a tape drive, the DX-Series system unloads the tape

drive as part of the Move Medium command.

The source and destination elements can be of any type: storage, medium

transport, import/export, or data transport element. The valid

combinations of source element type and destination element type are

summarized in the Mode Sense Device Capabilities Parameter Page

(see

table 35).

If a valid source element type and destination element type are specified,

the command is valid but the operation may still not be possible. In this

case the DX-Series system returns check condition status and sets the

sense key to Illegal Request.

The Additional Sense Code and Additional Sense Code Qualifier

indicate why an operation cannot be carried out. For example, this might

occur if the specified source element or destination element does not

contain a tape cartridge. For a summary of the conditions, sense key, and

additional sense encoding, see

table 226 on page 279.

The format for the Move Medium command block is shown in table 37.

Table 37 Move

Medium Command

Bit/Byte 7 6 5 4 3 2 1 0

Operation Code (A5h)

Logical Unit Number Reserved (00h)

(MSB)

Transport Element Address (0000h)

(LSB)