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SCSI Commands
Quantum DLT 4000 Tape Drive
5-61
5.9
MODE SELECT (6) / (10) COMMAND (15H / 55H)
The MODE SELECT command (available in either 6- or 10-byte format) enables
the host to configure the tape drive. Implementing MODE SELECT and MODE
SENSE requires “handshaking” between the host and the drive. Before
configuring the drive, the host should issue a MODE SENSE command to the
drive to obtain a report of the current configuration and determine what
parameters are configurable. The host interprets this information and then may
issue MODE SELECT to set the drive to the host’s preferred configuration. The
Mode Parameter List described in Section 5.8 is passed from the initiator to the
drive during the command’s DATA OUT phase.
Information for the drive is carried on a number of pages, each of which serves
to set the tape drive’s operating parameters. The MODE SELECT pages
supported, and the section of this manual that details each page, are:
Page Code
Description
Section
01h
READ/WRITE Error Recovery Page
5.9.2
02h
Disconnect / Reconnect Page
5.9.3
0Ah
Control Mode Page
5.9.4
0Fh
Data Compression Page
5.9.5
10h
Device Configuration Page
5.9.6
11h
Medium Partition Page
5.9.7
3Eh
EEPROM Vendor Unique Page
5.9.8
The tape drive always powers up with its default configurations set. This is also
true if the drive receives a BUS DEVICE RESET message or a hard reset via the
RST line on the SCSI bus.
The Command Descriptor Block is illustrated in Figure 5-29.
NOTE
For a list of changeable parameters within MODE SELECT, refer to
Sections 5.9.8 (EEPROM Vendor Unique Page 3Eh) and 5.9.9
(Changeable Parameters within MODE SELECT).
Summary of Contents for DLTtape DLT 4000
Page 1: ...DLT 4000 Tape Drive Product Manual November 10 2003 81 60043 04 ...
Page 5: ...USER MANUAL STATEMENTS FOR CLASS B EQUIPMENT continued ...
Page 6: ......
Page 24: ...About This Manual Quantum DLT 4000 Tape Drive xxiv ...
Page 62: ...Hardware Implementation 2 28 Quantum DLT 4000 Tape Drive ...
Page 100: ...Messages 4 12 Quantum DLT 4000 Tape Drive ...
Page 264: ...SCSI Commands 5 164 Quantum DLT 4000 Tape Drive ...
Page 274: ...Appendix B EEPROM Resident Bugcheck and Event Logs B 6 Quantum DLT 4000 Tape System ...
Page 280: ...Appendix C Updating the Firmware C 6 Quantum DLT 4000 Tape Drive ...
Page 298: ...Index Index 6 Quantum DLT4000 Tape Drive ...
Page 299: ......