Dell PowerVault TL2000 User manual

Dell™PowerVault™TL2000/TL4000 Tape Library
SCSI Reference

Second Edition (March 2007)
Information in this document is subject to change without notice.
©2007 Dell Inc. All rights reserved.
Reproduction in any manner whatsoever without the written permission of Dell Inc. is strictly forbidden. Trademarks
used in this text: Dell,the DELL logo, and PowerVault are trademarks of Dell Inc. Other trademarks and trade names
may be used in this document to refer to either the entities claiming the marks and names or their products. Dell Inc.
disclaims any proprietary interest in trademarks and trade names other than its own.
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Contents
Chapter 1. Introduction ............................. 1-1
Chapter 2. Library Features ............................ 2-1
Cleaning Cartridge Detection ............................ 2-1
Auto Clean Mode ................................ 2-1
User Commanded Cleaning ............................ 2-1
Control Modes ................................. 2-1
About the Not Ready Condition ........................... 2-2
Commands Allowed in the Presence of Reservations ................... 2-3
RMU Features ................................. 2-4
Operator Control Panel Features .......................... 2-4
Console Features ................................ 2-4
TL2000 Tape Library Element Addressing ....................... 2-5
TL4000 Tape Library Element Addressing ....................... 2-6
Chapter 3. Supported SCSI Commands ....................... 3-1
INITIALIZE ELEMENT STATUS (07h) ......................... 3-2
INITIALIZE ELEMENT STATUS WITH RANGE (37h) ................... 3-3
INQUIRY (12h) ................................. 3-4
Standard Inquiry Data ............................. 3-4
Supported Vital Product Data page (00h) ...................... 3-7
Unit Serial Number page (80h) .......................... 3-8
Device Identification page (83h) .......................... 3-8
Firmware Built Information page (C0h) ....................... 3-9
LOG SELECT (4Ch)............................... 3-10
LOG SENSE (4Dh) ............................... 3-11
Log Page Header format ............................ 3-12
Supported Pages Log Page (00h)......................... 3-12
Event Log Page (07h) ............................. 3-12
Event Structure ............................... 3-13
Tape Alert Log Page (2Eh) ........................... 3-15
Tape Alert Flag structure ............................ 3-17
Statistics Counter Page (30h) .......................... 3-17
Statistic Counter structure ........................... 3-18
Error Log Page (33h) ............................. 3-19
Error Event Structure ............................. 3-19
MODE SELECT 6(15h) ............................. 3-21
Mode Select Parameter List ........................... 3-22
Parameter List Header ............................. 3-22
Parity page (00h) ............................... 3-22
Control Extension page (0Ah) .......................... 3-23
Tape Alert Page (1Ch) ............................. 3-23
Element Address Assignment page (1Dh) ...................... 3-24
Transport Geometry Parameters page (1Eh) ..................... 3-25
Device Capabilities page (1Fh) .......................... 3-26
Vendor Specific Event Filter page (20h) ...................... 3-27
MODE SELECT 10 (55h) ............................. 3-29
MODE SENSE 6(1Ah) ............................. 3-30
Mode Parameter List ............................. 3-31
Mode Parameter Header ............................ 3-31
Parity page (00h) ............................... 3-32
Control Extension page (0Ah) .......................... 3-32
Tape Alert page (1Ch) ............................. 3-33
iii

Element Address Assignment page (1Dh) ...................... 3-33
Transport Geometry Parameters page (1Eh) ..................... 3-34
Device Capabilities page (1Fh) .......................... 3-35
Vendor Specific Event Filter page (20h) ...................... 3-36
MODE SENSE 10 (5Ah) ............................. 3-39
Mode Parameter List ............................. 3-39
Mode Parameter Header ............................ 3-40
MOVE MEDIUM (A5h) .............................. 3-41
PERSISTENT RESERVE IN (5Eh) ......................... 3-42
PERSISTENT RESERVE IN Parameter Data for Read Keys ............... 3-42
PERSISTENT RESERVE IN Parameter Data for Read Reservation ............ 3-43
PERSISTENT RESERVE IN Reservation Descriptor .................. 3-43
PERSISTENT RESERVE OUT (5Fh) ........................ 3-45
PERSISTENT RESERVE OUT Parameter List .................... 3-46
OPEN/CLOSE IMPORT/EXPORT ELEMENT (1Bh) ................... 3-47
POSITION TO ELEMENT (2Bh) .......................... 3-48
PREVENT /ALLOW MEDIA REMOVAL (1Eh) ..................... 3-49
READ BUFFER (3Ch) .............................. 3-50
Vendor Unique Mode ............................. 3-50
Descriptor Mode ............................... 3-51
Data Mode ................................. 3-51
Echo Mode ................................. 3-52
Echo Buffer Descriptor Mode .......................... 3-52
READ ELEMENT STATUS (B8h) .......................... 3-53
Element Status Data ............................. 3-54
Header .................................. 3-54
Element Status Page (Sub-header and Element Descriptor) ............... 3-54
Medium Transport Element Status Page (01h) .................... 3-55
Storage Element Status Page (02h) ........................ 3-57
Import/Export Element Status Page (03h) ...................... 3-59
Data Transfer Element Status Page (04h) ...................... 3-62
RELEASE 6(17h) ............................... 3-65
RELEASE 10 (57h) ............................... 3-66
REPORT SUPPORTED OPERATION CODES (A3h)................... 3-67
REPORT TIMESTAMP (A3h) ........................... 3-70
SEND DIAGNOSTIC (1Dh) ............................ 3-72
SEND VOLUME TAG (B6h) ............................ 3-73
Send Volume Tag Parameter structure ....................... 3-74
SET TIMESTAMP (A4h) ............................. 3-75
REQUEST SENSE (03h) ............................. 3-76
Possible Sense Keys ............................. 3-77
REQUEST VOLUME ELEMENT ADDRESS (B5h).................... 3-79
Request Volume Element Address header ..................... 3-80
RESERVE 6(16h) ............................... 3-81
RESERVE 10 (56h) ............................... 3-82
TEST UNIT READY (00h) ............................ 3-83
WRITE BUFFER (3Bh).............................. 3-84
Write Data Mode ............................... 3-84
Download microcode and Download microcode and save Mode ............. 3-85
Echo Buffer Mode .............................. 3-85
Chapter 4. Messages .............................. 4-1
Command Complete ............................... 4-1
Extended messages ............................... 4-1
Save Data Pointers ............................... 4-2
Restore Pointers ................................ 4-2
iv TL2000 and TL4000 SCSI Reference

Disconnect .................................. 4-2
Initiator Detected Error .............................. 4-2
Abort ..................................... 4-2
Message Reject................................. 4-2
No Operation .................................. 4-3
Message Parity Error ............................... 4-3
Bus Device Reset ................................ 4-3
Identify .................................... 4-3
Chapter 5. Command Status Byte ......................... 5-1
Chapter 6. Command Timeouts .......................... 6-1
Chapter 7. Sense Keys, ASC, and ASCQ ....................... 7-1
Index .................................... X-1
Contents v

vi TL2000 and TL4000 SCSI Reference

Chapter 1. Introduction
This document describes the SCSI Media Changer Command Set for the Dell™PowerVault™TL2000 Tape
Library and TL4000 Tape Library. The host will recognize both atape drive and aMedia Changer on the
same SCSI ID. On this SCSI ID logical unit zero is reserved for the tape drive and logical unit one is used
for the media changer. The tape drive will pass the received SCSI commands for LUN 1over to the
attached library controller by means of serial communication.
The SCSI media changer commands are based on the following specifications.
Document T10 Version ANSI INCITS Version
SMC-2 T10/1383-D rev 7ANSI INCITS 382-2004
SPC-3 T10/1416-D rev 23
SAM-2 T10/1157-D rev 24 ANSI INCITS 366-2003
Amedia changer logical unit receives commands to move cartridges between various types in the element
address space. The element types are storage, import-export, data transfer, and medium transport. The
cartridge handling robotic subsystem, addressed as amedium transport element, moves cartridges within
amedia changer. The media changer logical unit maintains an inventory of cartridges and the element
addresses. The media changer logical unit reports this inventory when requested as well as identifying the
element address assigned to different types of elements.
1-1
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1-2 TL2000 and TL4000 SCSI Reference

Chapter 2. Library Features
The library includes the following components:
vOperator panel with LCD display and 4buttons which allows you to monitor the media changer
operations, control robotic operation and change configuration settings
vBar code scanner, the media changer uses the bar code scanner to read the bar codes from the data
cartridges and report this information as part of the cartridge inventory
vEthernet port for connecting to a10/100Base TEthernet network. This connection allows remote
monitoring of the media changer's operation, performing firmware upgrades and configuring its settings.
This port is also called RMU (Remote Management Unit)
vLVD SCSI or Fibre Channel port, through this port the host sends SCSI commands to both the media
changer and the tape drive
vSerial monitor port, through this port the media changer can be controlled by aconsole interface
vCartridge mover which moves cartridges from one location to the other. This element is also called a
medium transfer element
vStorage slots which store cartridges also referred to as storage elements
vImport/Export element allows the user to import or export an cartridge into/from the inventory of the
library
vHigh Speed /High Density tape drive also referred to as data transfer element
vMagazines, these cartridge carriers are used to hold cartridges in the library. Magazines can be
removed from the library.
Cleaning Cartridge Detection
The media changer will recognize cleaning cartridges. Once acleaning cartridge is recognized the media
changer will report its special status in the Read Element Status data.
Auto Clean Mode
The media changer supports Auto Clean Mode. Application clients must provide aplace within the library
to house the cleaning cartridge. Some libraries may have adesignated cleaning slot (DCS) where the
cleaning cartridge may reside. In the absence of aDCS, the application client must reserve aslot (element
address that will not be seen by the host). For details on reserving element addresses, see the
Configuration section of your Users Guide. The cleaning cartridge can then be physically moved into that
″reserved″element address to be available when called for by Auto Clean.
User Commanded Cleaning
The media changer may be instructed to clean atape drive by means of OCP or RMU commands. When
the medium changer is instructed to clean adrive, the media changer will load acleaning cartridge into the
tape drive and return this cartridge to its source element address once the cleaning operation is finished.
When no cleaning cartridge is available in the librarys inventory then the media changer will request the
user to insert acleaning cartridge. After the cleaning operation is completed the media changer will post a
message to the user about the status of the cleaning operation.
Control Modes
The media changer can receive commands from the following interfaces: SCSI, RMU, OCP and Console.
The default interface for receiving media access commands is the SCSI interface. The media changer
accepts media access SCSI commands when the media changer is on-line. The media changer is off-line
when auser sends amedia access command from either the RMU, OCP or Console interface.
2-1
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Immediately after the user command is finished the media changer switches to on-line mode. Note the
media changer is continuous off-line when it is configured into Sequential Mode.
The concept of control modes is introduced to explain the owner of the media changer. If the media
changer is on-line then the SCSI bus has control of the loader. When the media changer is in OCP Control
mode the OCP has control of the media changer. Described below are the possible control modes of the
library:
vSCSI Control mode (on-line) ,in which the media changer is controlled by aSCSI driver issuing
commands to move cartridges between the existing elements. This is the default control mode.
vSequential mode (off-line), in which the media changer is controlled by the media changers internal
firmware. In this mode the media changer will automatically replace an ejected cartridge from the tape
drive with another one from the media changers inventory. The media changer can be configured into
Sequential mode by means of the OCP menu or RMU browser.
vOCP /RMU /Console Control mode (off-line) ,in which the media changer is controlled by auser.
These control modes allow the user to send media access commands like move cartridges between
existing elements.
The media changer will return Not Ready status on media access SCSI command when the media
changer is off-line. The media changer will accept media access SCSI commands when the media
changer is on-line.
About the Not Ready Condition
The media changer reports Not Ready when it is unable to accept medium access commands. During the
Not Ready reason the media changer will perform all non-media access commands as specified.
The media changer is Not Ready when:
vIts initialization routine is in progress
vIt is in sequential mode
vIt is off-line
vAmagazine is removed
Not Ready reason Sense code during Sense info after Not Ready reason finished
Initializing 02/04/01 06/28/00
Magazine removed 02/3B/12 02/04/01 (see note 1)
Sequential Mode 02/04/8E 06/28/00
Off-line 02/04/12 06/28/00
Note: When amagazine is inserted the media changer will automatically re-initialize. During this process
the media changer shall return 02/04/01 status. When initializing is finished the media changer shall
return aunit attention 06/28/00 before returning Ready status.
The following non-media access commands are allowed during the Not Ready reason:
Allowed commands during not ready state
INQUIRY
LOG SENSE
MODE SENSE (6)
MODE SENSE (10)
PERSISTENT RESERVE IN
2-2 TL2000 and TL4000 SCSI Reference

Allowed commands during not ready state
PREVENT/ALLOW MEDIUM REMOVAL (prevent=0)
READ ELEMENT STATUS (curdata=1)
READ ELEMENT STATUS (dvcid=1)
RELEASE (6)
RELEASE (10)
REQUEST SENSE
WRITE BUFFER
Commands Allowed in the Presence of Reservations
The details of which commands are allowed under areservations are described in next table. The
RESERVE and RELEASE commands are used to manage the reservation state of the library.
Next table shows all commands allowed in the presence of reservations.
Command reserved by another initiator
INITIALIZE ELEMENT STATUS conflict
INITIALIZE ELEMENT STATUS WITH RANGE conflict
INQUIRY allowed
LOG SELECT conflict
LOG SENSE allowed
MODE SELECT (6) conflict
MODE SENSE (6) allowed
MODE SELECT (10) conflict
MODE SENSE (10) allowed
MOVE MEDIUM conflict
OPEN/CLOSE/IMPORT/EXPORT ELEMENT conflict
PERSISTENT RESERVE IN allowed
PERSISTENT RESERVE OUT conflict
POSITION TO ELEMENT conflict
PREVENT/ALLOW MEDIUM REMOVAL (prevent=0) allowed
PREVENT/ALLOW MEDIUM REMOVAL (prevent=1) conflict
READ BUFFER conflict
READ ELEMENT STATUS (curdata=0) conflict
READ ELEMENT STATUS (curdata=1) allowed
READ ELEMENT STATUS (dvcid=1) allowed
RELEASE (6) allowed
RELEASE (10) allowed
REPORT SUPPORTED OPERATION CODES allowed
REPORT TIMESTAMP allowed
REQUEST SENSE allowed
REQUEST VOLUME ELEMENT ADDRESS conflict
Chapter 2. Library Features 2-3

RESERVE (6) conflict
RESERVE (10) conflict
SET TIMESTAMP conflict
SEND DIAGNOSTIC conflict
SEND VOLUME TAG conflict
TEST UNIT READY conflict
WRITE BUFFER conflict
vallowed :Command received from SCSI initiators not holding the reservation should complete normally.
vconflict :Commands received from SCSI initiators not holding the reservation shall terminate the command with a
RESERVATION CONFLICT status.
RMU Features
The library is equipped with aRemote Management Unit. By means of the RMU interface the media
changer can be operated from aweb based browser. The RMU interface allows auser to monitor the
media changers operation, make configuration changes and perform media access commands. When a
user executes amedium access command through the RMU interface the media changer will enter the
off-line state. When the media changer is off-line the media changer will report Not Ready on the SCSI
bus. For an extensive description of the RMU functions please refer to the RMU specification.
Operator Control Panel Features
The library is equipped with an Operator Control Panel (OCP). By means of the OCP auser can perform
simple actions with the media changer. The OCP interface allows auser to monitor the media changer
operation, make configuration changes and perform media access commands. When auser executes a
medium access command through the OCP interface the media changer will enter the off-line state. When
the media changer is off-line the media changer will report Not Ready on the SCSI bus. For an extensive
description of the OCP functions please refer to the OCP specification.
Console Features
The library is equipped with aserial port which allows aconsole interface to control the media changer.
The console interface allows auser to monitor the media changer operation, make configuration changes
and perform media access commands. When auser executes amedium access command through the
console interface the media changer will enter the off-line state. When the media changer is off-line the
media changer will report Not Ready on the SCSI bus. For an extensive description of the console
functions please refer to the Console specification.
2-4 TL2000 and TL4000 SCSI Reference

TL2000 Tape Library Element Addressing
Table 2-1. TL2000 Tape Library SCSI Element Types and Element Address Ranges
Element Type Element Address Range
Media Transport Element (MTE) 1(0x01)
I/O Station Element (IEE) 16 (0x10)
Data Transfer Element (DTE) 256 (0x100)
Storage Element (STE) 4096 (0x1000) -4117 (0x1015)
Table 2-2. TL2000 Tape Library SCSI element addresses for I/O Station, storage slots, and drive slot
Left Magazine
⇐Front of TL2000 Tape Library
Library
Rear Panel
Right Magazine
Front of TL2000 Tape Library ⇒
Slot 8
(4103)
Slot 9
(4104)
Slot 10
(4105)
Slot 11
(4106)
Drive 1
256
(0x100)
Slot 23
(4118)
Slot 22
(4117)
Slot 21
(4116)
Slot 20
(4115)
Slot 4
(4099)
Slot 5
(4100)
Slot 6
(4101)
Slot 7
(4102)
Slot 19
(4114)
Slot 18
(4113)
Slot 17
(4112)
Slot 16
(4111)
I/O Station Slot 1
(4096)
Slot 2
(4097)
Slot 3
(4098)
Slot 15
(4110)
Slot 14
(4109)
Slot 13
(4108)
Slot 12
(4107)
Chapter 2. Library Features 2-5

TL4000 Tape Library Element Addressing
Table 2-3. TL4000 Tape Library SCSI Element Types and Element Addresses
Element Type Element Address Range
Media Transport Element (MTE) 1(0x01)
I/O Station Element (IEE) 16 (0x10), 17 (0x11), 18 (0x12)
Data Transfer Element (DTE) 256 (0x100), 257 (0x101)
Storage Element (STE) 4096 (0x1000) -4139 (0x102B)
Table 2-4. TL4000 Tape Library SCSI element addresses for I/O Station, storage slots, and drive slot
Upper Left Magazine
⇐Front of TL4000 Tape Library
Library
Rear Panel
Upper Right Magazine
Front of TL4000 Tape Library ⇒
Slot 17
4112
(0x1010)
Slot 18
4113
(0x1011)
Slot 19
4114
(0x1012)
Slot 20
4115
(0x1013)
Drive 2
257
(0x101)
Slot 44
4139
(0x102B)
Slot 43
4138
(0x102A)
Slot 42
4137
(0x1029)
Slot 41
4136
(0x1028)
Slot 13
4108
(0x100C)
Slot 14
4109
(0x100D)
Slot 15
4110
(0x100E)
Slot 16
4111
(0x100F)
Slot 40
4135
(0x1027)
Slot 39
4134
(0x1026)
Slot 38
4133
(0x1025)
Slot 37
4132
(0x1024)
Slot 9
4104
(0x1008)
Slot 10
4105
(0x1009)
Slot 11
4106
(0x100A)
Slot 12
4107
(0x100B)
Slot 36
4131
(0x1023)
Slot 35
4130
(0x1022)
Slot 34
4129
(0x1021)
Slot 33
4128
(0x1020)
Lower Left Magazine Drive 1
256
(0x100)
Lower Right Magazine
I/O Slot 3
18
(0x12)
Slot 7
4102
(0x1006)
Slot 8
4103
(0x1007)
DCS* Slot 32
4127
(0x101F)
Slot 31
4126
(0x101E)
Slot 30
4125
(0x101D)
Slot 29
4124
(0x101C
I/O Slot 2
17
(0x11)
Slot 4
4099
(0x1003)
Slot 5
4100
(0x1004)
Slot 6
4101
(0x1005)
Slot 28
4123
(0x101B)
Slot 27
4122
(0x101A)
Slot 26
4121
(0x1019)
Slot 25
4120
(0x1018)
I/O Slot 1
16
(0x10)
Slot 1
4096
(0x1000)
Slot 2
4097
(0x1001)
Slot 3
4098
(0x1002)
Slot 24
4119
(0x1017)
Slot 23
4118
(0x1016)
Slot 22
4117
(0x1015)
Slot 21
4116
(0x1014)
*Dedicated Cleaning Slot
2-6 TL2000 and TL4000 SCSI Reference

Chapter 3. Supported SCSI Commands
The media changer SCSI command set supports the following commands:
Command Operation Code Standard Support Status
INITIALIZE ELEMENT STATUS 07h SMC-2 supported
INITIALIZE ELEMENT STATUS WITH RANGE 37h SMC-2 supported
INQUIRY 12h SPC-3 supported
LOG SELECT 4Ch SPC-3 supported
LOG SENSE 4Dh SPC-3 supported
MODE SELECT (6) 15h SPC-3 supported
MODE SENSE (6) 1Ah SPC-3 supported
MODE SELECT (10) 55h SPC-3 supported
MODE SENSE (10) 5Ah SPC-3 supported
MOVE MEDIUM A5h SMC-2 supported
OPEN/CLOSE IMPORT/EXPORT ELEMENT 1Bh SMC-3 supported
PERSISTENT RESERVE IN 5Eh SPC-3 supported
PERSISTENT RESERVE OUT 5Fh SPC-3 supported
POSITION TO ELEMENT 2Bh SMC-2 supported
PREVENT/ALLOW MEDIUM REMOVAL 1Eh SPC-3 supported
READ BUFFER 3Ch SPC-3 supported
READ ELEMENT STATUS B8h SMC-2 supported
RECEIVE DIAGNOSTIC RESULTS 1Ch SPC-3 not supported
RELEASE (6) 17h SPC-3 supported
RELEASE (10) 57h SPC-3 supported
REPORT SUPPORTED OPERATION CODES A3h SPC-3 supported
REPORT TIMESTAMP A3h SPC-3 supported
REQUEST SENSE 03h SPC-3 supported
REQUEST VOLUME ELEMENT ADDRESS B5h SMC-2 supported
RESERVE (6) 16h SPC-3 supported
RESERVE (10) 56h SPC-3 supported
SET TIMESTAMP A4h SPC-3 supported
SEND DIAGNOSTIC 1Dh SPC-3 supported
SEND VOLUME TAG B6h SMC-2 supported
TEST UNIT READY 00h SPC-3 supported
WRITE BUFFER 3Bh SPC-3 supported
3-1

INITIALIZE ELEMENT STATUS (07h)
This command directs the medium changer to check all existing elements for tape cartridges and any
status relevant to that element. This command enables the initiator to get aquick response from aRead
Element Status command that may follow, and is useful after apower failure, if tape medium has been
changed by an operator, or if subsystem configuration has changed. The library shall not return GOOD
status until checking of all the elements is complete.
Bit 76543210
Byte
0Operation Code (07h)
1LUN Reserved
2Reserved
3Reserved
4Reserved
5Control
Field descriptions:
3-2 TL2000 and TL4000 SCSI Reference

INITIALIZE ELEMENT STATUS WITH RANGE (37h)
The INITIALIZE ELEMENT STATUS WITH RANGE command shall cause the media changer to check the
specified elements for volume status and any other relevant status. This command enables the initiator to
get aquick response from aRead Element Status command that may follow, and is useful after apower
failure, if tape medium has been changed by an operator, or if subsystem configuration has changed.
Bit 76543210
Byte
0Operation Code (37h)
1LUN Reserved Fast Range
2(MSB) Starting Element Address
3(LSB)
4Reserved
5Reserved
6(MSB) Number of Elements
7(LSB)
8Reserved
9Control
Field descriptions:
Range:
ARange bit of zero indicates that all element addresses shall be checked and that the Starting
Element Address and Number of Elements fields are ignored. ARange bit of one indicates that the
series of elements beginning at the specified Starting Element Address for the specified Number of
Elements shall be checked. If the Number of Elements field is zero, the range checked shall start
with the Starting Element Address and continue through the last element address on the unit.
Fast: AFast bit of one indicates that the specified elements shall be scanned for media presence only. A
Fast bit of zero indicates that the specified elements shall be scanned for all relevant status.
Element Address:
When the Range bit is set this field specifies the starting element address of the scan for the
Initialize Elements with Range command. When the Range bit is not set the information in this
field is ignored.
Number of Elements:
When the Range bit is set this field specifies the number of elements to scan during the Initialize
Elements with Range command. The number of cartridges to scan should not exceed the
maximum number of available storage slots taking in account the starting Element Address field.
When the Range bit is not set the information in this field is ignored.
Chapter 3. Supported SCSI Commands 3-3

INQUIRY (12h)
The INQUIRY command requests that information regarding parameters of the medium changer be sent to
the initiator. The media changer can provide two categories of data in response to an inquiry command:
Standard Inquiry Data and Vital Product Data. Standard Inquiry Data contains basic data about the
Medium Changer and Vital Product Data can comprise several pages of additional data. Each Vital
Product Data page requires aseparate INQUIRY command from the initiator. An INQUIRY command is not
affected by, nor does it clear, aUnit Attention condition.
Bit 76543210
Byte
0Operation Code (12h)
1LUN Reserved Obsolete EVPD
2Page Code
3(MSB) Allocation length
4(LSB)
5Control
Field descriptions:
EVPD:
Enable Vital Product Data. An enable vital product data (EVPD) bit of one specifies that the device
server shall return the optional vital product data specified by the page code field. Note If the
EVPD bit is set to 0, the page code must be 00h.
Page Code:
This field contains the page number of the vital product data page to be returned for the INQUIRY
command, if the EVPD bit is set to 1. The following pages are supported:
v00h -Supported vital product pages
v80h -Unit serial number page
v83h -Device Identification page
vC0h -Firmware build information page
vD0h -Vendor Specific Page
vFFh -Vendor Use Only
Allocation Length:
Specifies the number of bytes of inquiry information the media changer is allowed to return to the
initiator during the command sdata-in phase. Error status is not returned if the value in this field
truncates the requested information.
Standard Inquiry Data
Bit 76543210
Byte
0Peripheral Qualifier (0) Peripheral Device Type (08=Medium Changer)
1RMB (1) Reserved
2Version (5)
3Obsolete Obsolete NormACA
(0)
HiSup Response data format (2)
4Additional length (43h)
3-4 TL2000 and TL4000 SCSI Reference

Bit 76543210
Byte
5SCCS ACC TPGS 3PC Reserved Protect
6BQue EncServ Reserved MultiP MChngr Obsolete Obsolete Addr16
7Obsolete Obsolete WBus16 Sync Linked Obsolete CmdQue Reserved
8-
15
Vendor Identification (8 ASCII bytes)
16 -
31
Product Identification (16 ASCII bytes)
32 -
35
Product Revision level (4 ASCII bytes)
36 -
37
Plant of manufacturer
38 -
49
Serial Number (12 ASCII bytes)
50 -
54
Reserved
55 Reserved BarC
56 Clocking QAS IUS
57 Reserved
58 -
59
Version Descriptor: 005Ch (SAM-2 ANSI INCITS 366-2003)
60 -
61
Version Descriptor: 0B56h (SPI-4 ANSI INCITS 362-2002)
62 -
63
Version Descriptor: 02FEh (SMC-2 ANSI INCITS 382-2004)
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65
Version Descriptor: 030Fh (SPC-3 T10/1416-D revision 22)
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73
Reserved
Field descriptions:
Peripheral Qualifier:
Areturn value of 0indicates that the specified LUN is supported in this device. When a
unsupported LUN was specified the Peripheral Qualifier will return 3h which indicates that
specified LUN is not supported.
Peripheral Device Type:
Indicates that this is amedium changer device. Set to 8. When aunsupported LUN was specified
the Peripheral Device Type will return 1Fh which indicates that specified LUN is not supported.
RMB: Removable Medium Bit. Set to 1.
Version:
The library complies to SPC-3. Set to 5.
NormACA:
ANORMACA bit set to zero indicates that the device server does not support aNACA bit set to
one in the control byte and does not support the ACA task attribute.
Chapter 3. Supported SCSI Commands 3-5

HiSup:
Ahierarchical support (HISUP) bit set to zero indicates the SCSI target device does not use the
hierarchical addressing model to assign LUNs to logical units
Response Data Format:
This Standard Inquiry Data is in SCSI-2 format. Set to 2.
Additional Length:
The media changer uses this field to indicate the number of additional bytes of INQUIRY response
data available.
SCCS:
The media changer does not contain an embedded storage array controller component. Set to 0.
ACC: The ACC bit set to zero indicates that no access controls coordinator may be addressed through
this logical unit.
TPGS:
The media changer does not support asymmetric logical unit access or supports aform of
asymmetric access that is vendor specific. Neither the REPORT TARGET GROUPS nor the SET
TARGET GROUPS commands is supported.
3PC: AThird-Party Copy (3PC) bit set to zero indicates that the media changer does not supports
third-party copy commands such as the EXTENDED COPY command.
Protect:
APROTECT bit set to zero indicates that the media changer does not support protection
information.
BQue: Basic Queuing is not supported, set to 0.
EncServ:
An Enclosure Services (ENCSERV) bit set to zero indicates that the media changer does not
contain an embedded enclosure services component.
MultiP:
AMULTIP bit set to zero indicates that this SCSI target device has asingle port and does not
implement the multi-port requirements.
MChanger:
This medium changer is not an attached medium changer. Set to 0.
Addr16:
When Addr16 is set to 1, the media changer does support 16-bit wide SCSI addresses. When set
to 0, indicates that the media changer does not support 16-bit wide SCSI addresses.
WBus16:
When WBus16 is set to 1, the media changer transfers SCSI data over an 16-bit wide bus. When
WBus16 is not set data transfers are done over an 8-bit wide bus.
Sync: When Sync is set to 1, data transfers are done in synchronous mode. When Sync is not set, data
transfers are done in asynchronous mode.
Linked:
Linked Commands are not supported. Set to 0.
CmdQue (Command Queuing):
For Fibre Channel, this is returned as 1, indicating command queuing is supported. For SCSI, this
is returned as 0, indicating no command queuing is supported.
3-6 TL2000 and TL4000 SCSI Reference