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SDLT 600 SCSI Interface Guide Chapter 3: SCSI Messages

81-81200-02 REV A01 January 2005 3-3

3.2 Supported SCSI Messages

The SDLT tape drive supports the messages listed in Table 3-3. The message code and the direction of

the message flow is also included in the table (In = target-to-initiator; Out = initiator-to-target). This

section describes each message the drive supports.

Table 3-2. SDLT Tape Drive Extended Message — Field Descriptions

Field Description

Extended

Message

Length

This field specifies the length, in bytes, of the Extended Message Code plus the Extended

Message Arguments that follow. The total length of the message is equal to the Extended

Message Length plus 2. A value of 0 for the Extended Message Length indicates that 256

bytes follow.

Extended

Message

Code

The drive supports the following Extended Messages:

Code Description

01h Synchronous Data Transfer Request

03h Wide Data Transfer Request

04h Parallel Protocol Request

Table 3-3. SDLT Tape Drive Supported Messages

Message and Code Direction

ABORT TASK SET (06h) Out

TARGET RESET (0Ch) Out

TASK COMPLETE (00h) In

DISCONNECT (04h) In Out

IDENTIFY (80h - FFh) In Out

IGNORE WIDE RESIDUE (23h) In

INITIATOR DETECTED ERROR (05h) Out

LOGICAL UNIT RESET (17h) Out

MESSAGE PARITY ERROR (09h) Out

MESSAGE REJECT (07h) In Out

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Quantum 1200 Series DAT Autochanger Betriebsanweisung Seite 31