Quantum DLT 4000 Manual

DLT™4000 Tape DriveProduct ManualApril 4, 200181-60043-04

Table of Contentsx Quantum DLT 4000 Tape Drive5.10 MODE SENSE (6) / (10) Command (1Ah / 5Ah)... 5-955.10.1 MODE S

Messages4-12 Quantum DLT 4000 Tape Drive

Quantum DLT 4000 Tape Drive 5-1Chapter 5SCSI COMMANDSThis chapter describes the SCSI protocol features implemented in the DLT 4000 tape drive. Note th

SCSI Commands5-2 Quantum DLT 4000 Tape DriveTable 5-1 Supported SCSI Commands (continued)Command Operation Code SectionRECEIVE DIAGNOSTIC RESULTS 1Ch

SCSI CommandsQuantum DLT 4000 Tape Drive 5-3NOTES1. Relative Addressing is not supported by the tape drive. Therefore,in all I/O commands, the RelAdr

SCSI Commands5-4 Quantum DLT 4000 Tape DriveIn response to the SAVE DATA POINTER message, the initiator stores thevalue of the current data pointer in

SCSI CommandsQuantum DLT 4000 Tape Drive 5-5Table 5–2 Command Descriptor Block - Field DescriptionsField DescriptionOperation Code The operation code

SCSI Commands5-6 Quantum DLT 4000 Tape DriveTable 5–2 Command Descriptor Block - Field Descriptions (continued)Field DescriptionControl FieldThe Cont

SCSI CommandsQuantum DLT 4000 Tape Drive 5-75.1.3 Status/Error ReportingSCSI message-level errors are communicated by messages that are definedspecif

SCSI Commands5-8 Quantum DLT 4000 Tape DriveTable 5–4 Status CodesStatusCodeDefinition Meaning00h GOOD The drive successfully completed the command.0

SCSI CommandsQuantum DLT 4000 Tape Drive 5-9Table 5–5 Length Field Name UnitsField Name Units ImpliedAllocation Length Bytes of data the drive is allo

Table of ContentsQuantum DLT 4000 Tape Drive xiD.3 Tape Cartridge Write-Protect Switch ... D-8D.4 Lo

SCSI Commands5-10 Quantum DLT 4000 Tape DriveTable 5–6 DATA-Phase Command Contents (continued)Command Length in CDB Data Out (To Drive) Data In (To I

SCSI CommandsQuantum DLT 4000 Tape Drive 5-115.1.5 Unit Attention ConditionQueued Unit Attentions are implemented on the Quantum DLT 4000 tape drivea

SCSI Commands5-12 Quantum DLT 4000 Tape DriveThe DLT 4000 tape drive recognizes multiple, successive SCSI bus resets andSCSI bus resets of arbitrarily

SCSI CommandsQuantum DLT 4000 Tape Drive 5-135.2 SCSI COMMAND DESCRIPTIONSThe SCSI commands are presented in alphabetical order. Each command startson

SCSI Commands5-14 Quantum DLT 4000 Tape Drive BitByte7 6 5 4 3 2 1 00 - 6 (Bytes 0 – 6)7 - 8(MSB) Parameter List Length (LSB)As shown, this s

SCSI CommandsQuantum DLT 4000 Tape Drive 5-155.3 ERASE COMMAND (19H)The ERASE command causes data on the tape medium to be erased. Any WRITEdata curr

SCSI Commands5-16 Quantum DLT 4000 Tape DriveERASE Command (19h) (continued)Table 5–7 ERASE Command Descriptor Block - Field DescriptionsField Desc

SCSI CommandsQuantum DLT 4000 Tape Drive 5-175.4 INQUIRY COMMAND (12H)The INQUIRY command allows the initiator to determine the kind of SCSIdevices a

SCSI Commands5-18 Quantum DLT 4000 Tape DriveINQUIRY Command (12h) (continued)Table 5–8 INQUIRY Command Descriptor Block - Field DescriptionsField

SCSI CommandsQuantum DLT 4000 Tape Drive 5-19INQUIRY Command (12h) (continued)BitByte7 6 5 4 3 2 1 00 Peripheral Qualifier Peripheral Device Type1 R

Table of Contentsxii Quantum DLT 4000 Tape DriveFiguresFigure 1-1. Quantum DLT 4000 Tape Drive (Rackmount)...

SCSI Commands5-20 Quantum DLT 4000 Tape DriveINQUIRY Command (12h) (continued)Table 5–10 contains field descriptions for the data returned by the dr

SCSI CommandsQuantum DLT 4000 Tape Drive 5-21INQUIRY Command (12h) (continued)Table 5–10 Standard Inquiry Data Page - Field Descriptions (continued

SCSI Commands5-22 Quantum DLT 4000 Tape DriveINQUIRY Command (12h) (continued)BitByte7 6 5 4 3 2 1 036 Product Family (4) Released Firmware37 Firmwa

SCSI CommandsQuantum DLT 4000 Tape Drive 5-23INQUIRY Command (12h) (continued)Table 5–11 Vendor Unique Inquiry Data Page - Field DescriptionsField

SCSI Commands5-24 Quantum DLT 4000 Tape DriveINQUIRY Command (12h) (continued)5.4.3 Supported Vital Product Data Page (00h)The Supported Vital Prod

SCSI CommandsQuantum DLT 4000 Tape Drive 5-25INQUIRY Command (12h) (continued) BitByte7 6 5 4 3 2 1 00 Peripheral Qualifier Peripheral Devic

SCSI Commands5-26 Quantum DLT 4000 Tape DriveINQUIRY Command (12h) (continued)BitByte7 6 5 4 3 2 1 00 Peripheral Qualifier Peripheral Device Type1 P

SCSI CommandsQuantum DLT 4000 Tape Drive 5-275.5 LOAD UNLOAD COMMAND (1BH)The LOAD UNLOAD command tells the target to load or unload the tapemedia in

SCSI Commands5-28 Quantum DLT 4000 Tape DriveLOAD UNLOAD Command (1Bh) (continued)NOTESThe sequential loading feature of the loader can beenabled/di

SCSI CommandsQuantum DLT 4000 Tape Drive 5-29LOAD UNLOAD Command (1Bh) (continued)Table 5–14 LOAD UNLOAD Command Descriptor Block - Field Descripti

Table of ContentsQuantum DLT 4000 Tape Drive xiiiFigure 5-23 Log Parameters Format for Read / Write Compression Ratio LOG SENSEPage (Parameter Codes

SCSI Commands5-30 Quantum DLT 4000 Tape Drive5.6 LOCATE COMMAND (2BH)The LOCATE command is used to do high-speed positioning to the specifiedblock ad

SCSI CommandsQuantum DLT 4000 Tape Drive 5-31LOCATE Command (2Bh) (continued)Table 5–15 LOCATE Command Descriptor Block - Field DescriptionsField N

SCSI Commands5-32 Quantum DLT 4000 Tape Drive5.7 LOG SELECT COMMAND (4CH)The LOG SELECT command allows the host to manage statistical informationmain

SCSI CommandsQuantum DLT 4000 Tape Drive 5-33LOG SELECT Command (4Ch) (continued)Table 5–16 LOG SELECT Command Descriptor Block - Field Description

SCSI Commands5-34 Quantum DLT 4000 Tape DriveLOG SELECT Command (4Ch) (continued)Table 5–16 LOG SELECT Command Descriptor Block - Field Description

SCSI CommandsQuantum DLT 4000 Tape Drive 5-35LOG SELECT Command (4Ch) (continued)If multiple pages are sent during the DATA OUT phase, they must be

SCSI Commands5-36 Quantum DLT 4000 Tape DriveLOG SELECT Command (4Ch) (continued)BitByte7 6 5 4 3 2 1 00 -1(MSB)Parameter Code(LSB)2 DU DS TSD ETC T

SCSI CommandsQuantum DLT 4000 Tape Drive 5-37LOG SELECT Command (4Ch) (continued)Table 5–18 LOG SELECT Log Parameters Field Descriptions (continued

SCSI Commands5-38 Quantum DLT 4000 Tape DriveLOG SELECT Command (4Ch) (continued)Table 5–18 LOG SELECT Log Parameters Field Descriptions (continued

SCSI CommandsQuantum DLT 4000 Tape Drive 5-395.8 LOG SENSE COMMAND (4DH)The LOG SENSE command allows the host to retrieve statistical informationmain

Table of Contentsxiv Quantum DLT 4000 Tape DriveFigure 5-61. READ BUFFER Descriptor - Data Format...5-

SCSI Commands5-40 Quantum DLT 4000 Tape DriveLOG SENSE Command (4Dh) (continued)Table 5–19 LOG SENSE Command Descriptor Block - Field DescriptionsF

SCSI CommandsQuantum DLT 4000 Tape Drive 5-41LOG SENSE Command (4Dh) (continued)Table 5–19 LOG SENSE Command Descriptor Block - Field Descriptions

SCSI Commands5-42 Quantum DLT 4000 Tape DriveLOG SENSE Command (4Dh) (continued)5.8.1 Error Detection Summary in LOG SENSE Command Descriptor BlockT

SCSI CommandsQuantum DLT 4000 Tape Drive 5-43LOG SENSE Command (4Dh) (continued)5.8.2 Supported Pages Log Page (Page 00h)When page 00h is requeste

SCSI Commands5-44 Quantum DLT 4000 Tape DriveLOG SENSE Command (4Dh) (continued)5.8.3 Read (Page 03h) / Write (Page 02h) Error LOG SENSE PageEach

SCSI CommandsQuantum DLT 4000 Tape Drive 5-45LOG SENSE Command (4Dh) (continued) BitByte7 6 5 4 3 2 1 00 -1(MSB)Parameter Code(LSB)2 DU DS TS

SCSI Commands5-46 Quantum DLT 4000 Tape DriveLOG SENSE Command (4Dh) (continued)Table 5–21 Log Parameters for Read / Write Error LOG SENSE Page Fie

SCSI CommandsQuantum DLT 4000 Tape Drive 5-47LOG SENSE Command (4Dh) (continued)Table 5–21 Log Parameters for Read / Write Error LOG SENSE Page Fie

SCSI Commands5-48 Quantum DLT 4000 Tape DriveLOG SENSE Command (4Dh) (continued)BitByte7 6 5 4 3 2 1 00 Reserved Page Code (07h)1 Reserved2 - 3(MSB)

SCSI CommandsQuantum DLT 4000 Tape Drive 5-49LOG SENSE Command (4Dh) (continued) BitByte7 6 5 4 3 2 1 00 -1(MSB)Parameter Code(LSB)2 DU DS TS

Table of ContentsQuantum DLT 4000 Tape Drive xvTablesTable 1-1. DLT 4000 Physical Dimensions...

SCSI Commands5-50 Quantum DLT 4000 Tape DriveLOG SENSE Command (4Dh) (continued)5.8.5 Read / Write Compression Page (32h)This page begins with a

SCSI CommandsQuantum DLT 4000 Tape Drive 5-51LOG SENSE Command (4Dh) (continued)BitByte7 6 5 4 3 2 1 00 -1(MSB)Parameter Code(LSB)2 DU DS TSD ETC TM

SCSI Commands5-52 Quantum DLT 4000 Tape Drive LOG SENSE Command (4Dh) (continued) BitByte7 6 5 4 3 2 1 00 -1(MSB)Parameter Code(LSB)2 DU DS

SCSI CommandsQuantum DLT 4000 Tape Drive 5-53LOG SENSE Command (4Dh) (continued)Table 5–26 Log Parameters for Read / Write Compression Ratio LOG SE

SCSI Commands5-54 Quantum DLT 4000 Tape DriveLOG SENSE Command (4Dh) (continued)Table 5–26 Log Parameters for Read / Write Compression Ratio LOG SE

SCSI CommandsQuantum DLT 4000 Tape Drive 5-55LOG SENSE Command (4Dh) (continued)5.8.6 Device Wellness Page (33h)The Device Wellness Page returns

SCSI Commands5-56 Quantum DLT 4000 Tape DriveLOG SENSE Command (4Dh) (continued) BitByte7 6 5 4 3 2 1 00 Parameter Code1Reserved2 DU DS TSD

SCSI CommandsQuantum DLT 4000 Tape Drive 5-57LOG SENSE Command (4Dh) (continued)Table 5–28 Log Parameters for Device Wellness LOG SENSE Page Field

SCSI Commands5-58 Quantum DLT 4000 Tape DriveLOG SENSE Command (4Dh) (continued)5.8.7 Device Status Page (3Eh)The Device Status Page describes th

SCSI CommandsQuantum DLT 4000 Tape Drive 5-59LOG SENSE Command (4Dh) (continued) BitByte7 6 5 4 3 2 1 00 - 1 Parameter Code2 DU DS TSD ETC TM

Table of Contentsxvi Quantum DLT 4000 Tape DriveTable 5-3. Command Descriptor Block Control Field - Field Descriptions... 5-6Table

SCSI Commands5-60 Quantum DLT 4000 Tape DriveLOG SENSE Command (4Dh) (continued)Table 5–30 Log Parameters for Device Status LOG SENSE Page Field De

SCSI CommandsQuantum DLT 4000 Tape Drive 5-615.9 MODE SELECT (6) / (10) COMMAND (15H / 55H)The MODE SELECT command (available in either 6- or 10-byte

SCSI Commands5-62 Quantum DLT 4000 Tape DriveMODE SELECT (6) / (10) Command (15h) / (55h) (continued)Mode Select (6) Command Descriptor Block – Data

SCSI CommandsQuantum DLT 4000 Tape Drive 5-63MODE SELECT (6) / (10) Command (15h) / (55h) (continued)Table 5–32 MODE SELECT (6) /(10) Command Descri

SCSI Commands5-64 Quantum DLT 4000 Tape DriveMODE SELECT (6) / (10) Command (15h) / (55h) (continued)Table 5–33 MODE SELECT Mode Parameter List - Fi

SCSI CommandsQuantum DLT 4000 Tape Drive 5-65MODE SELECT (6) / (10) Command (15h) / (55h) (continued)Table 5–34 MODE SELECT Mode Parameter Header -

SCSI Commands5-66 Quantum DLT 4000 Tape DriveMODE SELECT (6) / (10) Command (15h) / (55h) (continued)5.9.1.2 Mode Parameter Block DescriptorThe figu

SCSI CommandsQuantum DLT 4000 Tape Drive 5-67MODE SELECT (6) / (10) Command (15h) / (55h) (continued)Table 5–35 MODE SELECT Mode Parameter Block Des

SCSI Commands5-68 Quantum DLT 4000 Tape DriveMODE SELECT (6) / (10) Command (15h) / (55h) (continued)Table 5–35 MODE SELECT Mode Parameter Block Des

SCSI CommandsQuantum DLT 4000 Tape Drive 5-69MODE SELECT (6) / (10) Command (15h) / (55h) (continued)Table 5–36 MODE SELECT Page Descriptor - Field D

Table of ContentsQuantum DLT 4000 Tape Drive xviiTable 5-40. Data Compression Page Descriptor – Field Descriptions ... 5-80Ta

SCSI Commands5-70 Quantum DLT 4000 Tape DriveMODE SELECT (6) / (10) Command (15h) / (55h) (continued)5.9.2 READ / WRITE Error Recovery Page (01h)T

SCSI CommandsQuantum DLT 4000 Tape Drive 5-71MODE SELECT (6) / (10) Command (15h) / (55h) (continued)Table 5–37 Error Recovery Page - Field Descript

SCSI Commands5-72 Quantum DLT 4000 Tape DriveMODE SELECT (6) / (10) Command (15h) / (55h) (continued) BitByte7 6 5 4 3 2 1 00 PS (0) 0 Page Co

SCSI CommandsQuantum DLT 4000 Tape Drive 5-73MODE SELECT (6) / (10) Command (15h) / (55h) (continued)Table 5–38 Disconnect / Reconnect Page - Field

SCSI Commands5-74 Quantum DLT 4000 Tape DriveMODE SELECT (6) / (10) Command (15h) / (55h) (continued)Table 5–38 Disconnect / Reconnect Page - Field

SCSI CommandsQuantum DLT 4000 Tape Drive 5-75MODE SELECT (6) / (10) Command (15h) / (55h) (continued)5.9.4 Control Mode Page (0Ah)The Control Mode

SCSI Commands5-76 Quantum DLT 4000 Tape DriveMODE SELECT (6) / (10) Command (15h) / (55h) (continued)Table 5–39 Control Mode Page Descriptor - Field

SCSI CommandsQuantum DLT 4000 Tape Drive 5-77MODE SELECT (6) / (10) Command (15h) / (55h) (continued)5.9.5 Data Compression Page (0Fh)The Data Com

SCSI Commands5-78 Quantum DLT 4000 Tape DriveMODE SELECT (6) / (10) Command (15h) / (55h) (continued)Table 5–40 Data Compression Page Descriptor - F

SCSI CommandsQuantum DLT 4000 Tape Drive 5-79MODE SELECT (6) / (10) Command (15h) / (55h) (continued)5.9.6 Device Configuration Page (10h)The Dev

Table of Contentsxviii Quantum DLT 4000 Tape DriveTable 5-75. ASC / ASCQ for SEND DIAGNOSTIC ...

SCSI Commands5-80 Quantum DLT 4000 Tape DriveMODE SELECT (6) / (10) Command (15h) / (55h) (continued)Table 5–41 Device Configuration Page - Field De

SCSI CommandsQuantum DLT 4000 Tape Drive 5-81MODE SELECT (6) / (10) Command (15h) / (55h) (continued)Table 5–41 Device Configuration Page - Field De

SCSI Commands5-82 Quantum DLT 4000 Tape DriveMODE SELECT (6) / (10) Command (15h) / (55h) (continued)5.9.7 Medium Partition Page (11h)The drive s

SCSI CommandsQuantum DLT 4000 Tape Drive 5-83MODE SELECT (6) / (10) Command (15h) / (55h) (continued)Table 5–42 Medium Partition Page Descriptor - F

SCSI Commands5-84 Quantum DLT 4000 Tape DriveMODE SELECT (6) / (10) Command (15h) / (55h) (continued)5.9.8 EEPROM Vendor Unique Page (3Eh)The driv

SCSI CommandsQuantum DLT 4000 Tape Drive 5-85MODE SELECT (6) / (10) Command (15h) / (55h) (continued)Table 5–43 EEPROM Vendor Unique Page Parameters

SCSI Commands5-86 Quantum DLT 4000 Tape DriveMODE SELECT (6) / (10) Command (15h) / (55h) (continued)Table 5–43 EEPROM Vendor Unique Page Parameter

SCSI CommandsQuantum DLT 4000 Tape Drive 5-87MODE SELECT (6) / (10) Command (15h) / (55h) (continued)Table 5–43 EEPROM Vendor Unique Page Parameters

SCSI Commands5-88 Quantum DLT 4000 Tape DriveMODE SELECT (6) / (10) Command (15h) / (55h) (continued)Table 5–43 EEPROM Vendor Unique Page Parameters

SCSI CommandsQuantum DLT 4000 Tape Drive 5-89MODE SELECT (6) / (10) Command (15h) / (55h) (continued)As an example of an EEPROM vendor unique page, t

Quantum DLT 4000 Tape DrivexixREVISION HISTORYThis Revision History provides a concise publications record of this manual. It lists the manual’srevisi

SCSI Commands5-90 Quantum DLT 4000 Tape DriveMODE SELECT (6) / (10) Command (15h) / (55h) (continued)The following example illustrates an EEPROM ven

SCSI CommandsQuantum DLT 4000 Tape Drive 5-91MODE SELECT (6) / (10) Command (15h) / (55h) (continued)5.9.9 Changeable Parameters within MODE SELECT

SCSI Commands5-92 Quantum DLT 4000 Tape Drive5.10 MODE SENSE (6) / (10) COMMAND (1AH / 5AH)The MODE SENSE command allows the drive to report its med

SCSI CommandsQuantum DLT 4000 Tape Drive 5-93MODE SENSE (6) / (10) Command (1Ah / 5Ah) (continued) BitByte7 6 5 4 3 2 1 00 Operation Code (5A

SCSI Commands5-94 Quantum DLT 4000 Tape DriveMODE SENSE (6) / (10) Command (1Ah / 5Ah) (continued)Table 5–45 MODE SENSE Command Descriptor Block -

SCSI CommandsQuantum DLT 4000 Tape Drive 5-95MODE SENSE (6) / (10) Command (1Ah / 5Ah) (continued)5.10.1 MODE SENSE Data HeadersThe MODE SENSE (6)

SCSI Commands5-96 Quantum DLT 4000 Tape DriveMODE SENSE (6) / (10) Command (1Ah / 5Ah) (continued)Table 5–46 MODE SENSE Data Header - Field Descrip

SCSI CommandsQuantum DLT 4000 Tape Drive 5-97MODE SENSE (6) / (10) Command (1Ah / 5Ah) (continued)5.10.2 MODE SENSE Block DescriptorsThe following

SCSI Commands5-98 Quantum DLT 4000 Tape DriveMODE SENSE (6) / (10) Command (1Ah / 5Ah) (continued)Table 5–47 MODE SENSE Block Descriptor - Field De

SCSI CommandsQuantum DLT 4000 Tape Drive 5-99MODE SENSE (6) / (10) Command (1Ah / 5Ah) (continued)5.10.3 MODE SENSE Mode PagesThe following illustr

Quantum reserves the right to make changes and improvements to its products, withoutincurring any obligation to incorporate such changes or improvemen

Revision HistoryQuantum DLT 4000 Tape DrivexxManual Number- Revision LevelDate of Release Summary of Changes81-60043-02 April 08, 1999 Entire manual r

SCSI Commands5-100 Quantum DLT 4000 Tape DriveMODE SENSE (6) / (10) Command (1Ah / 5Ah) (continued)Table 5–48 MODE SENSE Page Descriptor - Field De

SCSI CommandsQuantum DLT 4000 Tape Drive 5-101MODE SENSE (6) / (10) Command (1Ah / 5Ah) (continued)5.10.3.1 READ / WRITE Error Recovery Page (01h)T

SCSI Commands5-102 Quantum DLT 4000 Tape DriveMODE SENSE (6) / (10) Command (1Ah / 5Ah) (continued)Table 5–49 Read / Write Error Recovery Page - Fi

SCSI CommandsQuantum DLT 4000 Tape Drive 5-103MODE SENSE (6) / (10) Command (1Ah / 5Ah) (continued) BitByte7 6 5 4 3 2 1 00 PS 0 Page Code (02

SCSI Commands5-104 Quantum DLT 4000 Tape DriveMODE SENSE (6) / (10) Command (1Ah / 5Ah) (continued)Table 5–50 Disconnect / Reconnect Error Recovery

SCSI CommandsQuantum DLT 4000 Tape Drive 5-105MODE SENSE (6) / (10) Command (1Ah / 5Ah) (continued)5.10.3.3 Control Mode Page (0Ah)The Control Mode

SCSI Commands5-106 Quantum DLT 4000 Tape DriveMODE SENSE (6) / (10) Command (1Ah / 5Ah) (continued)Table 5–51 Control Mode Page - Field Description

SCSI CommandsQuantum DLT 4000 Tape Drive 5-107MODE SENSE (6) / (10) Command (1Ah / 5Ah) (continued)5.10.3.4 Data Compression Page (0Fh)The Data Com

SCSI Commands5-108 Quantum DLT 4000 Tape DriveMODE SENSE (6) / (10) Command (1Ah / 5Ah) (continued)Table 5–52 Data Compression Page - Field Descrip

SCSI CommandsQuantum DLT 4000 Tape Drive 5-109MODE SENSE (6) / (10) Command (1Ah / 5Ah) (continued)5.10.3.5 Device Configuration Page (10h)The tape

Quantum DLT 4000 Tape Drive xxiABOUT THIS MANUAL“About this Manual” outlines the scope and contents of this manual. It contains information aboutthe i

SCSI Commands5-110 Quantum DLT 4000 Tape DriveMODE SENSE (6) / (10) Command (1Ah / 5Ah) (continued)Table 5–53 Device Configuration Page - Field Des

SCSI CommandsQuantum DLT 4000 Tape Drive 5-111MODE SENSE (6) / (10) Command (1Ah / 5Ah) (continued)Table 5–53 Device Configuration Page - Field Des

SCSI Commands5-112 Quantum DLT 4000 Tape DriveMODE SENSE (6) / (10) Command (1Ah / 5Ah) (continued)5.10.3.6 Medium Partition Page (11h)The tape dri

SCSI CommandsQuantum DLT 4000 Tape Drive 5-113MODE SENSE (6) / (10) Command (1Ah / 5Ah) (continued)Table 5–54 Medium Partition Page - Field Descrip

SCSI Commands5-114 Quantum DLT 4000 Tape Drive MODE SENSE (6) / (10) Command (1Ah / 5Ah) (continued)5.10.3.7 EEPROM Vendor Unique Page (3Eh)The tap

SCSI CommandsQuantum DLT 4000 Tape Drive 5-1155.11 PREVENT / ALLOW MEDIUM REMOVAL COMMAND (1EH)This command enables or disables the unloading of the t

SCSI Commands5-116 Quantum DLT 4000 Tape DrivePREVENT / ALLOW MEDIUM REMOVAL Command (1Eh)(continued)Table 5–55 PREVENT / ALLOW MEDIUM REMOVAL Comma

SCSI CommandsQuantum DLT 4000 Tape Drive 5-1175.12 READ COMMAND (08H)This command transfers one or more data blocks or bytes to the initiatorstarting

SCSI Commands5-118 Quantum DLT 4000 Tape DriveREAD Command (08h) (continued)Table 5–56 READ Command Descriptor Block - Field DescriptionsField Name

SCSI CommandsQuantum DLT 4000 Tape Drive 5-119READ Command (08h) (continued)Filemark, End-of-Data, and End-of-Medium/Partition HandlingIf the tape dr

About This ManualQuantum DLT 4000 Tape DrivexxiiChapter 2 Hardware ImplementationThis chapter contains configuration and installation information for

SCSI Commands5-120 Quantum DLT 4000 Tape Drive5.13 READ BLOCK LIMITS COMMAND (05H)The READ BLOCK LIMITS command directs the tape drive to report it’s

SCSI CommandsQuantum DLT 4000 Tape Drive 5-121READ BLOCK LIMITS Command (05h) (continued)The READ BLOCK LIMITS data shown as follows is sent during t

SCSI Commands5-122 Quantum DLT 4000 Tape Drive5.14 READ BUFFER COMMAND (3CH)The READ BUFFER command is used in conjunction with WRITE BUFFER as adiagn

SCSI CommandsQuantum DLT 4000 Tape Drive 5-123READ BUFFER Command (3Ch) (continued)Table 5–58 READ BUFFER Command Descriptor Block - Field Descriptio

SCSI Commands5-124 Quantum DLT 4000 Tape DriveREAD BUFFER Command (3Ch) (continued)Table 5–59 READ BUFFER Header - Field DescriptionsField Name Descr

SCSI CommandsQuantum DLT 4000 Tape Drive 5-1255.15 READ POSITION COMMAND (34H)The READ POSITION command is used to read a position identifier or SCSI

SCSI Commands5-126 Quantum DLT 4000 Tape DriveREAD POSITION Command (34h) (continued)Data from READ POSITION takes the following format: BitB

SCSI CommandsQuantum DLT 4000 Tape Drive 5-127READ POSITION Command (34h) (continued)Table 5–61 READ POSITION Data - Field DescriptionsField Name De

SCSI Commands5-128 Quantum DLT 4000 Tape Drive5.16 RECEIVE DIAGNOSTIC RESULTS COMMAND (1CH)The RECEIVE DIAGNOSTIC RESULTS command fetches the results

SCSI CommandsQuantum DLT 4000 Tape Drive 5-129RECEIVE DIAGNOSTIC RESULTS Command (1Ch) (continued)The following data is returned by the drive as a re

About This ManualQuantum DLT 4000 Tape Drive xxiiiAppendix D The Tape CartridgeAppendix D provides tape cartridge handling and inspection procedures,i

SCSI Commands5-130 Quantum DLT 4000 Tape Drive5.17 RELEASE UNIT COMMAND (17H)The RELEASE UNIT command releases the drive if it is currently reserved

SCSI CommandsQuantum DLT 4000 Tape Drive 5-131RELEASE UNIT Command (17h) (continued)Table 5–63 RELEASE UNIT Command Data - Field DescriptionsField N

SCSI Commands5-132 Quantum DLT 4000 Tape Drive5.18 REPORT LUNS COMMAND (A0h)The REPORT LUNS command requests that the peripheral device logical unitn

SCSI CommandsQuantum DLT 4000 Tape Drive 5-133REPORT LUNS Command (0Ah) (continued)BitByte7 6 5 4 3 2 1 00 - 3(MSB)LUN List Length (n – 7)(LSB)4 - 7

SCSI Commands5-134 Quantum DLT 4000 Tape Drive5.19 REQUEST SENSE COMMAND (03H)The REQUEST SENSE command causes the tape drive to transfer detailed se

SCSI CommandsQuantum DLT 4000 Tape Drive 5-135REQUEST SENSE Command (03h) (continued)The REQUEST SENSE command causes the tape drive to transfer deta

SCSI Commands5-136 Quantum DLT 4000 Tape DriveREQUEST SENSE Command (03h) (continued)BitByte7 6 5 4 3 2 1 00 Valid Error Code1 Segment Number (0)2 Fi

SCSI CommandsQuantum DLT 4000 Tape Drive 5-137REQUEST SENSE Command (03h) (continued)Table 5–66 REQUEST SENSE Data - Field DescriptionsField Name De

SCSI Commands5-138 Quantum DLT 4000 Tape DriveREQUEST SENSE Command (03h) (continued)Table 5–66 REQUEST SENSE Data - Field Descriptions (continued)F

SCSI CommandsQuantum DLT 4000 Tape Drive 5-139REQUEST SENSE Command (03h) (continued)Table 5–67 Supported Sense KeysSense Key Description0h NO SENSE

About This ManualQuantum DLT 4000 Tape Drivexxiv

SCSI Commands5-140 Quantum DLT 4000 Tape DriveREQUEST SENSE Command (03h) (continued)Table 5–68 Supported ASC / ASCQ in HexSense Key ASC ASCQ Descri

SCSI CommandsQuantum DLT 4000 Tape Drive 5-141REQUEST SENSE Command (03h) (continued)Table 5–68 Supported ASC / ASCQ in Hex (continued)Sense Key ASC

SCSI Commands5-142 Quantum DLT 4000 Tape DriveREQUEST SENSE Command (03h) (continued)Table 5–68 Supported ASC / ASCQ in Hex (continued)Sense Key ASC

SCSI CommandsQuantum DLT 4000 Tape Drive 5-143REQUEST SENSE Command (03h) (continued)Table 5–68 Supported ASC / ASCQ in Hex (continued)Sense Key ASC

SCSI Commands5-144 Quantum DLT 4000 Tape Drive5.20 RESERVE UNIT COMMAND (16H)The RESERVE UNIT command reserves the specified tape drive for exclusive

SCSI CommandsQuantum DLT 4000 Tape Drive 5-145RESERVE UNIT Command (16h) (continued)A reservation via the RESERVE UNIT command remains in effect unti

SCSI Commands5-146 Quantum DLT 4000 Tape Drive5.21 REWIND COMMAND (01H)The REWIND command directs the tape drive to position the tape at thebeginning

SCSI CommandsQuantum DLT 4000 Tape Drive 5-1475.22 SEND DIAGNOSTIC COMMAND (1DH)The SEND DIAGNOSTIC command directs the tape drive to perform its sel

SCSI Commands5-148 Quantum DLT 4000 Tape DriveSEND DIAGNOSTIC Command (1Dh) (continued)Two types of unit-resident diagnostic tests can be accessed:El

SCSI CommandsQuantum DLT 4000 Tape Drive 5-149SEND DIAGNOSTIC Command (1Dh) (continued)The following table illustrates the possible settings of the S

Quantum DLT 4000 Tape Drive 1-1Chapter 1GENERAL DESCRIPTION AND SPECIFICATIONSThis chapter provides a description and gives specifications for the Qua

SCSI Commands5-150 Quantum DLT 4000 Tape DriveSEND DIAGNOSTIC Command (1Dh) (continued)Table 5–73 SEND DIAGNOSTIC Parameter List - Field Description

SCSI CommandsQuantum DLT 4000 Tape Drive 5-151SEND DIAGNOSTIC Command (1Dh) (continued)NOTEBecause of data generation and verification, this test onl

SCSI Commands5-152 Quantum DLT 4000 Tape Drive5.23 SPACE COMMAND (11H)The SPACE command provides a variety of positioning functions that aredetermin

SCSI CommandsQuantum DLT 4000 Tape Drive 5-153SPACE Command (11h) (continued)Table 5–76 SPACE Command Data - Field Descriptions (continued)Field Nam

SCSI Commands5-154 Quantum DLT 4000 Tape Drive5.23 TEST UNIT READY COMMAND (00H)The TEST UNIT READY command checks the tape drive to ensure that th

SCSI CommandsQuantum DLT 4000 Tape Drive 5-1555.25 VERIFY COMMAND (13H)The VERIFY command directs the tape drive to verify one or more blocksbeginni

SCSI Commands5-156 Quantum DLT 4000 Tape DriveVERIFY Command (13h) (continued)Table 5–77 VERIFY Command Data - Field DescriptionsField Name Descript

SCSI CommandsQuantum DLT 4000 Tape Drive 5-1575.26 WRITE COMMAND (0AH)The WRITE command transfers one or more blocks from the host to the currentl

SCSI Commands5-158 Quantum DLT 4000 Tape DriveWRITE Command (0Ah) (continued)Table 5–78 WRITE Command Data - Field DescriptionsField Name Descriptio

SCSI CommandsQuantum DLT 4000 Tape Drive 5-1595.27 WRITE BUFFER COMMAND (3BH)The WRITE BUFFER command is used with READ BUFFER as a diagnosticfunc

General Description and Specifications1-2 Quantum DLT 4000 Tape DriveFigure 1-1 Quantum DLT 4000 Tape Drive (Rackmount)Figure 1-2 Quantum DLT 4000 T

SCSI Commands5-160 Quantum DLT 4000 Tape DriveWRITE BUFFER Command (3Bh) (continued)Table 5–79 WRITE BUFFER Command Data - Field DescriptionsField N

SCSI CommandsQuantum DLT 4000 Tape Drive 5-161WRITE BUFFER Command (3Bh) (continued)5.27.3 Download Microcode Mode (100b)Using buffer offsets, the ho

SCSI Commands5-162 Quantum DLT 4000 Tape Drive5.28 WRITE FILEMARKS COMMAND (10H)The WRITE FILEMARKS command directs the tape drive to write the spec

SCSI CommandsQuantum DLT 4000 Tape Drive 5-163WRITE FILEMARKS Command (10h) (continued)Table 5–80 WRITE FILEMARKS Command Data - Field DescriptionsF

SCSI Commands5-164 Quantum DLT 4000 Tape Drive

Quantum DLT 4000 Tape Drive A-1Appendix ADEFINITION OF VENDOR UNIQUE SENSE DATAINFORMATIONThis appendix lists the internal status codes with their des

Appendix A: Definition of Vendor Unique Sense Data InformationA-2 Quantum DLT 4000 Tape DriveTable A–1 Internal Status Codes (continued)Decimal Hexad

Appendix A: Definition of Vendor Unique Sense Data InformationQuantum DLT 4000 Tape Drive A-3Table A–1 Internal Status Codes (continued)Decimal Hexad

Appendix A: Definition of Vendor Unique Sense Data InformationA-4 Quantum DLT 4000 Tape DriveTable A–1 Internal Status Codes (continued)Decimal Hexad

Quantum DLT 4000 Tape System B-1Appendix BEEPROM-RESIDENT BUGCHECK AND EVENT LOGSThis appendix provides an explanation of the event logs (information

General Description and SpecificationsQuantum DLT 4000 Tape Drive 1-31.2 PRODUCT FEATURESThe DLT 4000 tape drive offers the following product features

Appendix B: EEPROM-Resident Bugcheck and Event LogsB-2 Quantum DLT 4000 Tape SystemThe most important information within the packet is the error code.

Appendix B: EEPROM-Resident Bugcheck and Event LogsQuantum DLT 4000 Tape System B-3B.2.2 Event Log PacketsEvent log packets are non-fatal and can occ

Appendix B: EEPROM-Resident Bugcheck and Event LogsB-4 Quantum DLT 4000 Tape SystemDirectory Failure Event Log PacketsDirectory failure event logs are

Appendix B: EEPROM-Resident Bugcheck and Event LogsQuantum DLT 4000 Tape System B-5Table B–3 Directory Failure Event Package – Field DescriptionsFiel

Appendix B: EEPROM-Resident Bugcheck and Event LogsB-6 Quantum DLT 4000 Tape System

Quantum DLT 4000 Tape Drive C-1Appendix CUPDATING THE FIRMWAREThis appendix explains how to update the tape drive’s PCBA-resident firmware.C.1 OVERVI

Appendix C: Updating the FirmwareC-2 Quantum DLT 4000 Tape DriveTable C-1 Block Size Used for Firmware Update TapeTape Format Density Upgrade Tape Bl

Appendix C: Updating the FirmwareQuantum DLT 4000 Tape Drive C-3Make sure you have a DLTtape that bears the firmware image and personality ofthe requi

Appendix C: Updating the FirmwareC-4 Quantum DLT 4000 Tape DriveAt this point, the firmware update mode is automatically cleared. One of thefollowing

Appendix C: Updating the FirmwareQuantum DLT 4000 Tape Drive C-5Table C-2 Results of Firmware UpdateIf... Then...The image is valid 1. The FLASH EEP

General Description and Specifications1-4 Quantum DLT 4000 Tape Drive1.3.2 Interface TypeDLT 4000 tape drives are available with narrow SCSI-2 fast si

Appendix C: Updating the FirmwareC-6 Quantum DLT 4000 Tape Drive

Quantum DLT 4000 Tape Drive D-1Appendix DTHE TAPE CARTRIDGEThis appendix covers:• Tape Cartridge Handling Guidelines (subsection D.1)• Tape Cartridg

Appendix D: The Tape CartridgeD-2 Quantum DLT 4000 Tape Drive• Always observe the proper environmental conditions for thestorage of tape cartridges.

Appendix D: The Tape CartridgeQuantum DLT 4000 Tape Drive D-3• Do not expose the tape cartridge to moisture or direct sunlight.• Do not insert any c

Appendix D: The Tape CartridgeD-4 Quantum DLT 4000 Tape DriveD.2 TAPE CARTRIDGE INSPECTION PROCEDUREEnsure that your tape backup solution performs re

Appendix D: The Tape CartridgeQuantum DLT 4000 Tape Drive D-55. Look at the bottom of the tape cartridge, holding it as shown in Figure D-2.Figure D-

Appendix D: The Tape CartridgeD-6 Quantum DLT 4000 Tape Drive6. Ensure that the tape leader within the tape cartridge is in the correctposition. To d

Appendix D: The Tape CartridgeQuantum DLT 4000 Tape Drive D-77. Figure D-4 shows three different tape cartridge loop problems. No tapecartridge that

Appendix D: The Tape CartridgeD-8 Quantum DLT 4000 Tape Drive8. Finally, check for proper operation of the tape cartridge’s write-protectswitch (Figu

Appendix D: The Tape CartridgeQuantum DLT 4000 Tape Drive D-9• Move the write-protect switch to the right to disable write protection(existing data o

General Description and SpecificationsQuantum DLT 4000 Tape Drive 1-5Table 1–3 DLT 4000 Performance Data (continued)Feature DescriptionTracks 128; 64

Appendix D: The Tape CartridgeD-10 Quantum DLT 4000 Tape DriveD.4 LOADING A TAPE CARTRIDGEComplete this subsection to load a tape cartridge into the

Appendix D: The Tape CartridgeQuantum DLT 4000 Tape Drive D-11D.5 UNLOADING A TAPE CARTRIDGEComplete this subsection to unload a tape cartridge. Bec

Appendix D: The Tape CartridgeD-12 Quantum DLT 4000 Tape DriveD.6 USING A CLEANING TAPE CARTRIDGEThis subsection contains information on how and when

Quantum DLT4000 Tape Drive Index-1IndexAASC/ASCQ codes,REQUEST SENSE, 5-147SEND DIAGNOSTIC, 5-159ABORT message, 4-5Acoustic noise emissions, 1-9Altitu

IndexIndex-2 Quantum DLT4000 Tape DriveEMI and safety certifications, 1-8Environmental specifications, 1-5ERASE command, 5-15ESD protection, 2-3FFirmw

IndexQuantum DLT4000 Tape Drive Index-3PParity checkingrackmount, 2-7tabletop, 2-8Performance data, 1-4Physical specifications, 1-3Pin assignmentspowe

IndexIndex-4 Quantum DLT4000 Tape DriveREAD BLOCK LIMITS (05h), 5-125READ BUFFER (3Ch), 5-127READ POSITION (34h), 5-131RECEIVE DIAGNOSTIC RESULTS(1Ch)

IndexQuantum DLT4000 Tape Drive Index-5VVendor unique page parameters for EEPROM, 5-86Vendor unique sense datarequest sense status codes, A-1VERIFY c

IndexIndex-6 Quantum DLT4000 Tape Drive

USER MANUAL STATEMENTS FOR CLASS A EQUIPMENT (INTEGRATIBLE TAPE SYSTEM)This equipment generates, uses, and may emit radio frequency energy. The equipm

General Description and Specifications1-6 Quantum DLT 4000 Tape DriveTable 1–4 DLT 4000 Environmental Specifications (continued)Specification Operat

*81-60043-04 A01*81-60043-04 A01501 Sycamore DriveMilpitas, CA 95035(408) 894-4000www.quantum.comApril 4, 200181-60043-04

General Description and SpecificationsQuantum DLT 4000 Tape Drive 1-7Table 1–6 DLT 4000 Non-Operating Vibration Specifications (continued)Description

General Description and Specifications1-8 Quantum DLT 4000 Tape Drive1.3.8 EMI and Safety CertificationsTable 1−8 provides the certifications held by

General Description and SpecificationsQuantum DLT 4000 Tape Drive 1-91.3.10 Acoustic Noise EmissionsThe following tables provide the tape drive’s acou

General Description and Specifications1-10 Quantum DLT 4000 Tape Drive1.3.12 DLTtape Recording Media SpecificationsThe following table provides specif

Quantum DLT 4000 Tape Drive 2-1Chapter 2HARDWARE IMPLEMENTATIONThis chapter describes how to install the internal tape drive or “brick” into a rackmou

Hardware Implementation2-2 Quantum DLT 4000 Tape Drive2.1.1 Safety PrecautionsFor your safety, follow all safety procedures described here and in othe

Hardware ImplementationQuantum DLT 4000 Tape Drive 2-32.1.3 Electrostatic Discharge (ESD) ProtectionVarious electrical components on/within the tape d

Hardware Implementation2-4 Quantum DLT 4000 Tape Drive2.2.1 Set the Rackmount Drive SCSI IDEach device on the SCSI bus must have a unique SCSI ID addr

Hardware ImplementationQuantum DLT 4000 Tape Drive 2-5Table 2-1 SCSI ID Address SelectionsSCSI ID Jumper Across Pins:9-10 7-8 5-6 3-4 1-20 1 0 0 0 01

USER MANUAL STATEMENTS FOR CLASS A EQUIPMENT (continued)USER MANUAL STATEMENTS FOR CLASS B EQUIPMENT (TABLETOP VERSION)This equipment has been tested

Hardware Implementation2-6 Quantum DLT 4000 Tape Drive2.2.2 Configure the Rackmount Drive for TERMPWR (Single-Ended Only)A SCSI bus must be terminated

Hardware ImplementationQuantum DLT 4000 Tape Drive 2-72.2.3 Configure The Rackmount Drive for Parity CheckingThe default setting for DLT 4000 tape dr

Hardware Implementation2-8 Quantum DLT 4000 Tape DriveFigure 2–4 Tabletop (Version 2) Back Panel ControlsSCSI ID - The SCSI ID default for the tableto

Hardware ImplementationQuantum DLT 4000 Tape Drive 2-9Figure 2–5 Rackmount Drive Mounting Locations – Side and Bottom ViewsSide View - Inches (Centi

Hardware Implementation2-10 Quantum DLT 4000 Tape DriveIn some systems, it may be more convenient to connect the SCSI bus and powercables to the drive

Hardware ImplementationQuantum DLT 4000 Tape Drive 2-11The three external connectors on the DLT 4000 tape drive that are discussed inthis manual are t

Hardware Implementation2-12 Quantum DLT 4000 Tape DriveTable 2–2 Single-Ended SCSI Pin AssignmentSignal Name Pin Number Pin Number Signal NameGround

Hardware ImplementationQuantum DLT 4000 Tape Drive 2-13Table 2–3 Differential SCSI Pin AssignmentSignal Name Pin Number Pin Number Signal NameOpen 1

Hardware Implementation2-14 Quantum DLT 4000 Tape DriveTable 2–4 4-Pin Power Connector Pin AssignmentPin Number Signal Name1 +12 VDC2 Ground (+12 V r

Hardware ImplementationQuantum DLT 4000 Tape Drive 2-152.4.3 Tabletop Drive ConnectorsFigures 2-8 and 2-9 show the locations of the connectors for th

USER MANUAL STATEMENTS FOR CLASS B EQUIPMENT (continued)

Hardware Implementation2-16 Quantum DLT 4000 Tape DriveFigure 2–9 Tabletop (Version 2) Back Panel ConnectorsAlign the appropriate SCSI and power cable

Hardware ImplementationQuantum DLT 4000 Tape Drive 2-172.5 DRIVE CONTROLS AND LIGHT EMITTING DIODES (LEDS)This section identifies the front panel cont

Hardware Implementation2-18 Quantum DLT 4000 Tape DriveTable 2–5 LED FunctionalityLED LED Color DescriptionDensity -2.6, 6.0,10.0/15.0, 20.0Amber Ref

Hardware ImplementationQuantum DLT 4000 Tape Drive 2-19Use CleaningTapeAmber On = Tape drive needs cleaning or tape is bad.Remains on after cleaning t

Hardware Implementation2-20 Quantum DLT 4000 Tape DriveTable 2–5 LED Functionality (continued)LED LED Color DescriptionOperate Handle Green On = Inse

Hardware ImplementationQuantum DLT 4000 Tape Drive 2-21Table 2-7 Control FunctionalityControl DescriptionDensity Select Button Refer to subsection 2.

Hardware Implementation2-22 Quantum DLT 4000 Tape Drive2.5.2 Selecting DensityThis subsection describes the drive’s density select features.CAUTIONIf

Hardware ImplementationQuantum DLT 4000 Tape Drive 2-23Selecting Density on the Tape DriveTo select density on the tape drive:1. Load the tape cartri

Hardware Implementation2-24 Quantum DLT 4000 Tape DriveTable 2–8 LED Activity During Density SelectionIf… Then…The density Select Buttonis not usedTh

Hardware ImplementationQuantum DLT 4000 Tape Drive 2-25Table 2–9 POST/Media Ready ActivityStage Activity1 The LED’s along the right-hand side of the f

Hardware Implementation2-26 Quantum DLT 4000 Tape Drive2.7 TROUBLESHOOTINGTable 2-11 lists troubleshooting tips in the event that your tape drive fail

Hardware ImplementationQuantum DLT 4000 Tape Drive 2-27Table 2–11 Troubleshooting Chart (Continued)If… Then… You Should…System does notrecognize the

Hardware Implementation2-28 Quantum DLT 4000 Tape Drive

Quantum DLT 4000 Tape Drive 3-1Chapter 3SCSI DESCRIPTIONThis chapter provides a detailed description of the logical interfaces of the tape drive. The

SCSI Description3-2 Quantum DLT 4000 Tape DriveTable 3–1 Implemented ANSI SCSI-2 CommandsCommand Code Class DescriptionErase 19h Mandatory Causes all

SCSI DescriptionQuantum DLT 4000 Tape Drive 3-3Table 3–1 Implemented ANSI SCSI-2 Commands (continued)Command Code Class DescriptionMODE SELECT (6) 15

SCSI Description3-4 Quantum DLT 4000 Tape DriveTable 3–1 Implemented ANSI SCSI-2 Commands (continued)Command Code Class DescriptionSPACE 11h Mandator

SCSI DescriptionQuantum DLT 4000 Tape Drive 3-5Table 3–2 Signal SourcesSignalsBus Phase BSY SEL C/D I/OMSG REQACK ATN DB(7–0)DB(P)DB(15-8)DB(P1)BU

SCSI Description3-6 Quantum DLT 4000 Tape Drive3.3.2 SCSI ID BitsSCSI permits a maximum of eight SCSI devices on a SCSI bus (16 devices arepermitted w

SCSI DescriptionQuantum DLT 4000 Tape Drive 3-7Table 3–3 SCSI-2 Bus Signal Definitions (continued)Signal DefinitionDB(15–8,P1)(data bus)Eight data-bi

Quantum DLT 4000 Tape Drive viiTABLE OF CONTENTSRevision History...

SCSI Description3-8 Quantum DLT 4000 Tape DriveTable 3–4 SCSI Bus Timing ValuesTiming Description Value DescriptionArbitration Delay 2.4 µs Minimum t

SCSI DescriptionQuantum DLT 4000 Tape Drive 3-9Table 3–4 SCSI Bus Timing Values (continued)Timing Description Value DescriptionData Release Delay 400

SCSI Description3-10 Quantum DLT 4000 Tape DriveTable 3–4 SCSI Bus Timing Values (continued)Timing Description Value DescriptionSelection Time-OutDel

SCSI DescriptionQuantum DLT 4000 Tape Drive 3-11During normal operation, the BUS FREE phase is entered when the drivereleases the BSY signal. However,

SCSI Description3-12 Quantum DLT 4000 Tape DriveMessages Received by Drive:• ABORT• BUS DEVICE RESET• RELEASE RECOVERYIf an initiator detects the r

SCSI DescriptionQuantum DLT 4000 Tape Drive 3-134. The SCSI device waits at least an arbitration delay to determine arbitrationresults.NOTEStep 4 req

SCSI Description3-14 Quantum DLT 4000 Tape Drive3.5.3.1 Selection SequenceThe initiator:1. Sets the DATA BUS to the OR of its SCSI ID bit and the dri

SCSI DescriptionQuantum DLT 4000 Tape Drive 3-15The initiator asserts the RST signal.1. The initiator follows these steps:a) Continues asserting the

SCSI Description3-16 Quantum DLT 4000 Tape DriveThe initiator:8. Determines that it is selected when the following occur for at least one bussettle d

SCSI DescriptionQuantum DLT 4000 Tape Drive 3-17SCSI devices that respond to the RESELECTION phase must ensure that thereselection is still valid with

Table of Contentsviii Quantum DLT 4000 Tape Drive2.5.2 Selecting Density... 2-21

SCSI Description3-18 Quantum DLT 4000 Tape DriveThe COMMAND, DATA, STATUS, and MESSAGE phases are known as theInformation Transfer Phases because they

SCSI DescriptionQuantum DLT 4000 Tape Drive 3-19Table 3–5 Information Transfer PhasesMSGSignalC/D I/O Phase Name Direction of Transfer/ Definition0 0

SCSI Description3-20 Quantum DLT 4000 Tape Drive3.5.5.1 Asynchronous Data TransferDrive to Initiator Transfer Procedure1. The drive drives the DB (7–

SCSI DescriptionQuantum DLT 4000 Tape Drive 3-21REQ signal until after the leading edge of the next ACK pulse is received. Forsuccessful completion of

SCSI Description3-22 Quantum DLT 4000 Tape Drive6. Drive reads the DB (7-0, P) signals within one hold time of the transition ofthe ACK signal to tru

SCSI DescriptionQuantum DLT 4000 Tape Drive 3-23Table 3–6 Status BytesStatus Bytes Returned from Tape Drive DefinitionGOOD (00h) This status indicates

SCSI Description3-24 Quantum DLT 4000 Tape DriveNOTESIn contrast to the BUSY status condition, the DRIVE NOT READYSense Key is returned as part of the

SCSI DescriptionQuantum DLT 4000 Tape Drive 3-25Table 3–7 Drive MESSAGE OUT Phase ResponseATN Signal True in Phase... The Drive Enters MESSAGE OUT…CO

SCSI Description3-26 Quantum DLT 4000 Tape Drivecommands are returned with Check Condition status, Sense Key of NotReady, until the medium has been ma

Quantum DLT 4000 Tape Drive 4-1Chapter 4MESSAGESThe SCSI message system allows communication between an initiator and the drive for interfacemanagemen

Table of ContentsQuantum DLT 4000 Tape Drive ixChapter 5: SCSI Commands...

Messages4-2 Quantum DLT 4000 Tape DriveTable 4–1 Message FormatMessage Code Message00h One-byte message (COMMAND COMPLETE)01h Extended message02h – 1

MessagesQuantum DLT 4000 Tape Drive 4-3Table 4–2 Supported MessagesMessage Message Code DirectionABORT 06h OutBUS DEVICE RESET 0Ch OutCOMMAND COMPLET

Messages4-4 Quantum DLT 4000 Tape Drive BitByte7 6 5 4 3 2 1 00 Extended Message (01h)1 Extended Message Length2 Extended Message Code3 to n-1

MessagesQuantum DLT 4000 Tape Drive 4-54.2 SUPPORTED SCSI MESSAGESFollowing are descriptions of each of the messages supported by the drive.4.2.1 ABOR

Messages4-6 Quantum DLT 4000 Tape Drive4.2.4 DISCONNECT Message (04h)The DISCONNECT message is sent from the drive to inform the initiator thatthe p

MessagesQuantum DLT 4000 Tape Drive 4-74.2.5 IDENTIFY Message (80h - FFh)The IDENTIFY message is sent by either the initiator or the drive to establ

Messages4-8 Quantum DLT 4000 Tape Drive4.2.6 INITIATOR DETECTED ERROR Message (05h)The INITIATOR DETECTED ERROR message is sent from an initiator to

MessagesQuantum DLT 4000 Tape Drive 4-94.2.7 LINKED COMMAND COMPLETE Message (0Ah)This message is sent from a target to an initiator to indicate tha

Messages4-10 Quantum DLT 4000 Tape Drive4.2.11 NO OPERATION Message (08h)If a target requests a message, the initiator sends a NO OPERATION message i

MessagesQuantum DLT 4000 Tape Drive 4-11BitByte7 6 5 4 3 2 1 00 Extended Message Identifier (01h)(Figure 4-1)1 Length (03h)2 Message Code (01h)3Transf