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Quantum Instruments DLT 7000 User Manual

Page 106

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SCSI Commands

5-2

Quantum DLT 7000 Tape System

Table 5–1 Supported SCSI Commands (continued)

Command

Operation Code

Section

RELEASE UNIT

17h

5.17

REQUEST SENSE

03h

5.18

RESERVE UNIT

16h

5.19

REWIND

01h

5.20

SEND DIAGNOSTIC

1Dh

5.21

SPACE

11h

5.22

TEST UNIT READY

00h

5.23

VERIFY

13h

5.24

WRITE

0Ah

5.25

WRITE BUFFER

3Bh

5.26

WRITE FILEMARKS

10h

5.27

NOTES

Relative Addressing is not supported by the tape drive. Therefore, in all I/O

commands, the RelAdr bit must be 0.

RESERVE UNIT and RELEASE UNIT by Logical Unit Number are supported, as are

third-party reservations. Extent reservations are not supported.

The RECEIVE DIAGNOSTIC RESULTS and SEND DIAGNOSTIC DATA commands

implement vendor-unique pages to test the drive during the manufacturing
process. It is recommended that initiators specify only the non-page format
variants of these commands (PF=0), except for page 0x40.

The DLT tape drive does not act as an initiator on the SCSI bus. Therefore, the drive

will not 1) generate unsolicited interrupts to the host, 2) initiate its own SCSI
commands, or 3) assert bus reset.

Linked commands are supported.

Untagged queuing is supported.