Fujitsu MAX3073NC SCSI,80, DC961,Hard User manual

C141-C010-01EN
MAW3073, MAW3147, MAW3300 NP/NC SERIES
MAX3036, MAX3073, MAX3147 NP/NC SERIES
DISK DRIVES
SCSI LOGICAL INTERFACE SPECIFICATIONS

C141-C010
FOR SAFE OPERATION
Handling of This Manual
This manual contains important information for using this product. Read thoroughly before using the
product. Use this product only after thoroughly reading and understanding especially the section
"Important Alert Items" in this manual. Keep this manual handy, and keep it carefully.
FUJITSU makes every effort to prevent users and bystanders from being injured or from suffering
damage to their property. Use the product according to this manual.
About This Product
This product is designed and manufactured for use in standard applications such as office work,
personal devices and household appliances. This product is not intended for special uses (atomic
controls, aeronautic or space systems, mass transport controls, medical devices for life support, or
weapons firing controls) where particularly high reliability requirements exist, where the pertinent
levels of safety are not guaranteed, or where a failure or operational error could threaten a life or cause
a physical injury (hereafter referred to as "mission-critical" use). Customers considering the use of
these products for mission-critical applications must have safety-assurance measures in place
beforehand. Moreover, they are requested to consult our sales representative before embarking on
such specialized use.
First Edition
This manual is for internal use only. Fujitsu takes no responsibility for any other use.
The contents of this manual may be revised without prior notice.
The contents of this manual shall not be disclosed in any way or reproduced in any media without the
express written permission of Fujitsu Limited.
All Rights Reserved, Copyright FUJITSU LIMITED 2005

C141-C010
Revision History
(1/1)
Edition Date Revised section (*1)
(Added/Deleted/Altered) Details
01 August, 2005 — —
*1 Section(s) with asterisk (*) refer to the previous edition when those were deleted.

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C141-C010 i
Preface
This manual explains concerning the MAW3073NP/NC, MAW3147NP/NC, MAW3300NP/NC,
MAX3036NP/NC, MAX3073NP/NC, MAX3147NP/NC series 3.5 inch hard disk drives with
internal SCSI controller.
The purpose of this manual is to provide specifications of each command and detailed
explanations of their functions for use of these magnetic disk drives incorporated into user
systems, and to present the information necessary for creating host system software. This
manual is written for users who have a basic knowledge of hard disk drives and their use in
computer systems.
The composition of manuals related to these disk drives and the range of subjects covered in
this manual are shown in "Manual Organization," provided on a subsequent page. Please use
these other manuals along with this manual as necessary.
Overview of Manual
This manual consists of the following six chapters, glossary, abbreviation, and index:
Chapter 1 Command Processing
This chapter describes the basic logical specifications related to SCSI command processing in
the disk drives.
Chapter 2 Data Buffer Management
This chapter describes the data buffer configuration provided in the disk drives and concerning
data transfer processing functions and cache operation.
Chapter 3 Command Specifications
This chapter describes specifications of SCSI commands provided by the disk drives and how
to use them.
Chapter 4 Parameter Data Formats
This chapter describes the parameter data formats provided by the disk drives and how to use
them.
Chapter 5 Sense Data Error Recovery Methods
This chapter describes the configuration and contents of sense data which report to the host
system when an error occurs, etc., key information necessary for error recovery, recommended
procedures for error recovery to be executed through host system software and retry processing
executed internally in the disk drives for recovery
Chapter 6 Disk Media Management
This chapter describes the procedure for initializing the disk media, methods of treating media
defects and data recovery methods for the disk drives.

Preface
ii C141-C010
Glossary
The glossary explains technical terms which are necessary to the reader's understanding when
reading this manual.
Acronyms and Abbreviations
This list shows the full spelling of abbreviations used in this manual.
The model name of disk drives covered by this manual differs in its ending suffix (Note 1)
depending on its device type (3 types), the electrical conditions of the SCSI interface used to
connect the disk drive to the host system and its capacity and data format at the time it was
shipped, but in this manual, except in cases where models need to be especially distinguished,
a representative model name (Note 2) is used. In addition, these disk drives are called
Intelligent Disk Drive (IDD), "drive" or "device" in this manual.

Preface
C141-C010 iii
CONVENTIONS USED INTHIS MANUAL
Note 1: Model Name
M AW 3 300 NC
Interface type NP: Low voltage differential 16-bit SCSI Ultra-320
68-pin connector
NC: Low voltage differential 16-bit SCSI Ultra-320
SCA2 connector
Formatted capacity (1,000 MB units)
* 1MB = 1.000.000 bytes
Disk size
Type AX: 1-inch height (15,000 rpm)
AW: 1-inch height (10,025 rpm)
Note 2: Typical model name
Type model name Model name
MAW3300 MAW3300NP, MAW3300NC
MAW3147 MAW3147NP, MAW3147NC
MAW3073 MAW3073NP, MAW3073NC
MAX3147 MAX3147NP, MAX3147NC
MAX3073 MAX3073NP, MAX3073NC
MAX3036 MAX3036NP, MAX3036NC
Warning Indications
The following warning indications are shown in this manual to prevent the user and other
nearby persons or property from being injured or damaged.
Note “Note” indicates the most effective method of use or information that is of value to the
user.
Requesting for User’s Comments
Please use the User’s Comment Form attached to the end of this manual to identify user
comments including error, inaccurate and misleading information of this manual. Contact to
your Fujitsu representative for additional comment forms if required.

Preface
iv C141-C010
Related Standards
Specifications and functions of products covered by this manual comply with the following
standards.
Standard (Text) No. Name Enacting Organization
ANSI X3. 131-1986 American National Standard for
Information Systems --- Small Computer
System Interface (SCSI)
American National
Standards Institute
(ANSI)
ANSI X3. 131-1994 American National Standard for
Information Systems --- Small Computer
System Interface-2 (SCSI-2)
American National
Standards Institute
(ANSI)
X3T9.2/85-52 Rev 4.B COMMON COMMAND SET (CCS) of
the Small Computer System Interface
(SCSI)
American National
Standards Institute
(ANSI)
X3T9.2 855D Rev 12 WORKING DRAFT Information
Technology SCSI-3 Parallel Interface American National Standards Institute
(ANSI)
T10/1236-D Rev 20 Information technology SCSI Primary
Commands-2 (SPC-2) American National Standards Institute
(ANSI)
T10 project 996D Rev 8C Information Technology --- SCSI-3 Block
Commands (SBC) American National Standards Institute
(ANSI)
T10/1157D Rev 24 Information technology SCSI-3
Architecture Model (SAM2) American National Standards Institute
(ANSI)
T10/1356D Rev 10 Information technology SCSI Parallel
Interface-4 (SPI4) American National Standards Institute
(ANSI)
Attention
Please forward any comments you may have regarding this manual.
To make this manual easier for users to understand, opinions from readers are needed. Please
write your opinions or requests on the Comment at the back of this manual and forward it to
the address described in the sheet.

C141-C010 v
Product/
Maintenance Manual
(C141-E234/C141-E235)
1. General Description
2. Specifications
3. Data Format
4. Installation Requirements
5. Installation
6. Diagnostics and Maintenance
7. Error Analysis
SCSI Physical
Interface Specifications
(C141-C011)
1. SCSI Bus
2. SCSI Message
3. Error Recovery
SCSI Logical Interface Specifications
(C141-C010)
(This Manual)
1. Command Processing
2. Data Buffer Management
3. Command Specifications
4. Parameter Data Formats
5. Sense Data Error Recovery Methods
6. Disk Media Management
MANUAL ORGANIZATION

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C141-C010 vii
Contents
CHAPTER 1 Command Processing...................................................................................................................1-1
1.1 Command Format.....................................................................................................................................1-1
1.2 Status ........................................................................................................................................................ 1-6
1.3 Outline of Command Processing.............................................................................................................. 1-8
1.3.1 Single commands .............................................................................................................................. 1-8
1.3.2 Command link...................................................................................................................................1-9
1.3.3 Disconnect/reconnect processing ....................................................................................................1-11
1.3.4 Synchronous mode data transfer/wide mode data transfer.............................................................. 1-15
1.4 Command Queuing Function.................................................................................................................. 1-16
1.4.1 Untagged queuing............................................................................................................................ 1-16
1.4.2 Tagged queuing...............................................................................................................................1-18
1.5 UNIT ATTENTION Condition.............................................................................................................. 1-19
1.5.1 Generation of the UNIT ATTENTION condition........................................................................... 1-19
1.5.2 Response and release condition at UNIT ATTENTION condition hold state.................................1-20
1.5.3 UNIT ATTENTION condition multiple hold..................................................................................1-22
1.6 Sense Data Hold State ............................................................................................................................ 1-22
1.6.1 Sense data hold condition................................................................................................................1-22
1.6.2 Response and release conditions at sense data hold state................................................................ 1-22
1.7 Command Processing Exceptions...........................................................................................................1-23
1.7.1 Overlapping commands................................................................................................................... 1-23
1.7.2 Illegal LUN specification ................................................................................................................ 1-24
1.7.3 Reserved operation code..................................................................................................................1-24
1.7.4 Command processing in the not ready state.................................................................................... 1-24
1.7.5 Error recovery processing ............................................................................................................... 1-26
1.7.6 Reset processing.............................................................................................................................. 1-28
1.7.7 Fatal hardware errors.......................................................................................................................1-29
1.8 Data Block Addressing........................................................................................................................... 1-30
1.8.1 Definition of data space................................................................................................................... 1-30
1.8.2 Logical block addressing................................................................................................................. 1-32
CHAPTER 2 Data Buffer Management............................................................................................................2-1
2.1 Data Buffer............................................................................................................................................... 2-1
2.1.1 Data buffer configuration and basic operation.................................................................................. 2-1

Contents
viii C141-C010
2.1.2 Operation mode setting......................................................................................................................2-5
2.2 Look-Ahead Cache Feature......................................................................................................................2-6
2.2.1 Caching operation..............................................................................................................................2-6
2.2.2 Caching parameters ...........................................................................................................................2-9
2.2.3 Look-Ahead operation, Look-Ahead volume..................................................................................2-10
2.3 Write Cache............................................................................................................................................2-11
CHAPTER 3 Command Specifications.............................................................................................................3-1
3.1 Control/Sense Commands.........................................................................................................................3-1
3.1.1 TEST UNIT READY (00).................................................................................................................3-1
3.1.2 INQUIRY (12)...................................................................................................................................3-2
3.1.3 READ CAPACITY (25)..................................................................................................................3-13
3.1.4 CHANGE DEFINITION (40) .........................................................................................................3-14
3.1.5 MODE SELECT (15)......................................................................................................................3-19
3.1.6 MODE SELECT EXTENDED (55)................................................................................................3-27
3.1.7 MODE SENSE (1A)........................................................................................................................3-30
3.1.8 MODE SENSE EXTENDED (5A)..................................................................................................3-38
3.1.9 REZERO UNIT (01) .......................................................................................................................3-41
3.1.10 START/STOP UNIT (1B)...............................................................................................................3-41
3.1.11 RESERVE (16)................................................................................................................................3-43
3.1.12 RESERVE EXTENDED (56).........................................................................................................3-46
3.1.13 RELEASE (17)................................................................................................................................3-47
3.1.14 RELEASE EXTENDED (57)..........................................................................................................3-48
3.1.15 REQUEST SENSE (03) ..................................................................................................................3-48
3.1.16 LOG SELECT (4C).........................................................................................................................3-50
3.1.17 LOG SENSE (4D) ...........................................................................................................................3-54
3.1.18 PERSISTENT RESERVE IN (5E)..................................................................................................3-55
3.1.18.1 PERSISTENT RESERVE IN service actions...........................................................................3-56
3.1.18.1.1 READ KEYS ......................................................................................................................3-56
3.1.18.1.2 READ RESERVATIONS...................................................................................................3-57
3.1.18.2 PERSISTENT RESERVE IN parameter data for READ KEYS ...............................................3-57
3.1.18.3 PERSISTENT RESERVE IN parameter data for READ RESERVATIONS............................3-58
3.1.18.3.1 Persistent reservation scope ................................................................................................3-59
3.1.18.3.2 Persistent reservations type.................................................................................................3-60
3.1.19 PERSISTENT RESERVE OUT (5F) ..............................................................................................3-62
3.1.19.1 PERSISTENT RESERVE OUT service actions........................................................................3-63
3.1.19.2 PERSISTENT RESERVE OUT parameter list..........................................................................3-64
3.1.20 REPORT LUNS (A0)......................................................................................................................3-66

Contents
C141-C010 ix
3.1.21 REPORT DEVICE IDENTIFIER (A3)...........................................................................................3-68
3.1.22 SET DEVICE IDENTIFIER (A4)................................................................................................... 3-69
3.2 Data Access Commands.........................................................................................................................3-71
3.2.1 READ (08) ...................................................................................................................................... 3-71
3.2.2 READ EXTENDED (28) ................................................................................................................ 3-72
3.2.3 WRITE (0A).................................................................................................................................... 3-73
3.2.4 WRITE EXTENDED (2A).............................................................................................................. 3-74
3.2.5 WRITE AND VERIFY (2E) ...........................................................................................................3-75
3.2.6 VERIFY (2F)................................................................................................................................... 3-76
3.2.7 SEEK (0B).......................................................................................................................................3-77
3.2.8 SEEK EXTENDED (2B).................................................................................................................3-77
3.2.9 SET LIMITS (33) (Not Supported).................................................................................................3-78
3.2.10 SYNCHRONIZE CACHE (35).......................................................................................................3-80
3.3 Format Commands .................................................................................................................................3-81
3.3.1 FORMAT UNIT (04)......................................................................................................................3-81
3.3.2 REASSIGN BLOCKS (07).............................................................................................................3-91
3.3.3 READ DEFECT DATA (37) ..........................................................................................................3-94
3.3.4 READ DEFECT DATA (B7) .........................................................................................................3-98
3.4 Maintenance, Diagnostic Commands..................................................................................................... 3-99
3.4.1 SEND DIAGNOSTIC (1D).............................................................................................................3-99
3.4.2 RECEIVE DIAGNOSTIC RESULTS (1C)...................................................................................3-106
3.4.3 WRITE BUFFER (3B)..................................................................................................................3-110
3.4.4 READ BUFFER (3C)....................................................................................................................3-115
3.4.5 READ LONG (3E)........................................................................................................................ 3-119
3.4.6 WRITE LONG (3F) ......................................................................................................................3-120
3.4.7 WRITE SAME (41)....................................................................................................................... 3-121
CHAPTER 4 Parameter Data Formats.............................................................................................................4-1
4.1 Mode Parameters......................................................................................................................................4-1
4.1.1 Read/Write error recovery parameters (page code = 1).....................................................................4-1
4.1.2 Disconnect/reconnect parameters (page code = 2).......................................................................... 4-10
4.1.3 Format parameter (page code = 3)...................................................................................................4-14
4.1.4 Drive parameter (page code = 4)..................................................................................................... 4-18
4.1.5 Verify error recovery parameters (page code = 7) ......................................................................... 4-19
4.1.6 Caching parameters (page code = 8)...............................................................................................4-21
4.1.7 Control mode parameters (page code = 0A)................................................................................... 4-27
4.1.8 Notch parameter (page code = 0C)..................................................................................................4-31
4.1.9 Port control parameter (page code = 19).........................................................................................4-33

Contents
x C141-C010
4.1.10 Informational exceptions control page (page code = 1C)................................................................4-43
4.1.11 Background control mode parameter (page code = 1C/subpage = 01)............................................4-47
4.1.12 Additional error recovery parameters (page code = 21)..................................................................4-48
4.2 Log Parameters.......................................................................................................................................4-49
4.2.1 Supprot log page (X'00')..................................................................................................................4-49
4.2.2 Buffer overrun / underrun page (X'01')...........................................................................................4-50
4.2.3 Write error count page (X'02').........................................................................................................4-51
4.2.3.1 Write errors recovered without delays (Page 02, Code 0000)..................................................4-51
4.2.3.2 Write errors recovered with possible delays (Page 02, Code 0001).........................................4-52
4.2.3.3 Total posted write errors (Page 02, Code 0002).......................................................................4-52
4.2.3.4 Total posted recoverable write errors (Page 02, Code 0003) ...................................................4-53
4.2.3.5 Total write bytes processed (Page 02, Code 0005)...................................................................4-53
4.2.3.6 Total posted unrecoverable write errors (Page 02, Code 0006) ...............................................4-54
4.2.4 Read error count page (X'03')..........................................................................................................4-54
4.2.4.1 Read errors recovered without delays (Page 03, Code 0000)...................................................4-55
4.2.4.2 Read errors recovered with possible delays (Page 03, Code 0001)..........................................4-55
4.2.4.3 Total posted read errors (Page 03, Code 0002)........................................................................4-56
4.2.4.4 Total posted recoverable read errors (Page 03, Code 0003).....................................................4-56
4.2.4.5 Total read bytes processed (Page 03, Code 0005)....................................................................4-57
4.2.4.6 Total posted unrecoverable read errors (Page 03, Code 0006).................................................4-57
4.2.5 Verify error count page (X'05')........................................................................................................4-58
4.2.5.1 Verify errors recovered without delays (Page 05, Code 0000) ................................................4-58
4.2.5.2 Vefiry errors recovered with possible delays (Page 05, Code 0001)........................................4-59
4.2.5.3 Total posted verify errors (Page 05, Code 0002)......................................................................4-59
4.2.5.4 Total posted recoverable verify errors (Page 05, Code 0003)..................................................4-60
4.2.5.5 Total verify bytes processed (Page 05, Code 0005).................................................................4-60
4.2.5.6 Total posted unrecoverable verify errors (Page 05, Code 0006)..............................................4-61
4.2.6 Non-medium error count page (X'06').............................................................................................4-61
4.2.7 Temperature page (X'0D') ...............................................................................................................4-62
4.2.7.1 Temperature (Page 0D, Code 0000).........................................................................................4-62
4.2.7.2 Reference temperature (Page 0D, Code 0001).........................................................................4-63
4.2.8 Start-stop cycle counter page (X'0E') ..............................................................................................4-63
4.2.8.1 Date of manufacture (Page 0E, Code 0001).............................................................................4-64
4.2.8.2 Accounting date (Page 0E, Code 0002) ...................................................................................4-64
4.2.8.3 Specified cycle count over device lifetime (Page 0E, Code 0003)...........................................4-65
4.2.8.4 Start-stop cycle counter (Page 0E, Code 0004)........................................................................4-65
4.2.9 Application client page (X'0F')........................................................................................................4-66

Contents
C141-C010 xi
4.2.9.1 General usage application client parameter data (Page 0F, Code 0000-003F)......................... 4-66
4.2.10 Self-test result page (X'10') ............................................................................................................. 4-67
4.2.10.1 Self-test result parameter data (Page 10, Code 0001-0014)....................................................... 4-67
4.2.11 Background medium scan page (X'15')........................................................................................... 4-69
4.2.11.1 Background medium scan status parameter.............................................................................4-69
4.2.11.2 Background medium scan parameter....................................................................................... 4-70
4.2.12 SMART status page (X'2F').............................................................................................................4-71
4.2.13 SMART data page (X'38')............................................................................................................... 4-72
CHAPTER 5 Sense Data Error Recovery Methods.........................................................................................5-1
5.1 Sense Data ................................................................................................................................................5-1
5.1.1 Sense data format ..............................................................................................................................5-1
5.1.2 Sense data basic information............................................................................................................. 5-2
5.1.3 Sense data additional information ................................................................................................... 5-12
5.2 INIT Error Recovery Methods (Recommended).................................................................................... 5-12
5.2.1 Termination status analysis and error recovery methods ................................................................5-12
5.2.2 Sense data analysis and error recovery methods.............................................................................5-15
5.2.3 Error logging ...................................................................................................................................5-22
5.3 Disk Drive Error Recovery Processing...................................................................................................5-23
5.3.1 Error states and retry processing procedures...................................................................................5-23
5.3.2 Auto alternate block allocation processing......................................................................................5-24
5.3.3 Error recovery processing control...................................................................................................5-26
CHAPTER 6 Disk Media Management............................................................................................................. 6-1
6.1 Defect Management..................................................................................................................................6-1
6.2 Disk Media Initialization.......................................................................................................................... 6-3
6.2.1 Initialization during installation.........................................................................................................6-3
6.2.2 Re-initialization.................................................................................................................................6-5
6.3 Data Block Verification Methods (Recommended) .................................................................................6-6
6.4 Alternate Block Allocation Processing.....................................................................................................6-7
Glossary ............................................................................................................................................................GL-1
Acronyms and Abbreviations............................................................................................................................AB-1
Index ...................................................................................................................................................................IN-1

Contents
xii C141-C010
Illustrations
Figures
Figure 1.1 6-Byte CDB Basic Format.................................................................................................................1-1
Figure 1.2 10-Byte CDB Basic Format...............................................................................................................1-2
Figure 1.3 12-Byte CDB Basic Format...............................................................................................................1-2
Figure 1.4 Status .................................................................................................................................................1-6
Figure 1.5 Data space configuration.................................................................................................................1-31
Figure 2.1 Data buffer configuration (in the case of 8 cache segments)............................................................2-2
Figure 2.2 Example of data buffer operation during read...................................................................................2-3
Figure 2.3 Example of data buffer operation during write..................................................................................2-4
Figure 2.4 Parameters for controlling reconnection timing ................................................................................2-5
Figure 2.5 Cache control parameters ..................................................................................................................2-9
Figure 3.1 Standard INQUIRY data....................................................................................................................3-4
Figure 3.2 Command support data......................................................................................................................3-9
Figure 3.3 VPD information: VPD identifier list.............................................................................................3-11
Figure 3.4 VPD information: device serial No. ...............................................................................................3-11
Figure 3.5 VPD information: operation mode .................................................................................................3-12
Figure 3.6 READ CAPACITY data..................................................................................................................3-14
Figure 3.7 CHANGE DEFINITION command: operation mode parametor...................................................3-16
Figure 3.8 MODE SELECT parameter structure..............................................................................................3-21
Figure 3.9 MODE SELECT command (Group 0) parameter configuration.....................................................3-23
Figure 3.10 MODE SELECT EXTENDED command (Group 2) parameter configuration...............................3-29
Figure 3.11 MODE SENSE command (Group 0) parameter configuration .......................................................3-34
Figure 3.12 MODE SENSE EXTENDED command (Group 2) parameter configuration.................................3-39
Figure 3.13 LOG, SELECT command: parameter list........................................................................................3-51
Figure 3.14 LOG SELECT command: log parameter.........................................................................................3-52
Figure 3.15 PERSISTENT RESERVE IN command: parameter data (READ KEYS)......................................3-57
Figure 3.16 PERSISTENT RESERVE IN command: parameter data (READ RESERVATIONS)...................3-58
Figure 3.17 PERSISTENT RESERVE IN Reservation Descriptor ....................................................................3-59
Figure 3.18 PERSISTENT RESERVE OUT command: parameter list..............................................................3-64
Figure 3.19 REPORT LUNS command: parameter list......................................................................................3-67
Figure 3.20 REPORT DEVICE IDENTIFIER: parameter list............................................................................3-68
Figure 3.21 SET DEVICE IDENTIFER: parameter list.....................................................................................3-70
Figure 3.22 SET LIMITS command: Specifying the range where access is permitted .....................................3-79
Figure 3.23 FORMAT UNIT command parameter list configuration................................................................3-84
Figure 3.24 Defect descriptor: Byte distance from index format.......................................................................3-87
Figure 3.25 Defect descriptor: physical sector address format..........................................................................3-88
Figure 3.26 REASSIGN BLOCK command: defect data list configuration......................................................3-92
Figure 3.27 READ DEFECT DATA command (37): Defect data configuration..............................................3-95
Figure 3.28 READ DEFECT DATA command (B7): Defect data configuration..............................................3-99
Figure 3.29 SEND DIAGNOSTIC command: parameter list configuration ...................................................3-102
Figure 3.30 SEND DIAGNOSTIC parameters: page code list........................................................................3-103
Figure 3.31 SEND DIAGNOSTIC parameters: logical/physical address conversion .....................................3-104
Figure 3.32 RECEIVE DIAGNOSTIC RESULTS command: Response data configuration..........................3-107
Figure 3.33 RECEIVE DIAGNOSTIC RESULTS response data: page code list ...........................................3-108
Figure 3.34 RECEIVE DIAGNOSTIC RESULTS response data: logical/physical address conversion.........3-108
Figure 3.35 WRITE BUFFER command: buffer data (Mode = 000, 001)......................................................3-111
Figure 3.36 READ BUFFER command: buffer data (Mode = 0000, 0001)....................................................3-116
Figure 3.37 READ BUFFER command: buffer descriptor................................................................................3-117
Figure 3.38 READ BUFFER command: Echo buffer descriptor.......................................................................3-118

Contents
C141-C010 xiii
Figure 4.1 MODE SELECT parameters: read/write error recovery parameters................................................ 4-2
Figure 4.2 MODE SELECT parameters: disconnect/reconnect parameters.....................................................4-10
Figure 4.3 MODE SELECT parameters: format parameters...........................................................................4-14
Figure 4.4 MODE SELECT parameters: each parameters of pages 3, 4, and C in detail................................ 4-17
Figure 4.5 MODE SELECT parameters: drive parameters..............................................................................4-18
Figure 4.6 MODE SELECT parameters: verify error recovery parameters .................................................... 4-20
Figure 4.7 MODE SELECT parameters: caching parameters .......................................................................... 4-22
Figure 4.8 MODE SELECT parameters: control mode parameters..................................................................4-27
Figure 4.9 MODE SELECT parameters: notch parameter ............................................................................... 4-31
Figure 4.10 MODE SELECT parameters: port control parameter...................................................................... 4-33
Figure 4.11 MODE SELECT parameters: informational exception control....................................................... 4-43
Figure 4.12 MODE SELECT parameters: additional error recovery parameters..............................................4-48
Figure 5.1 Expanded sense data format..............................................................................................................5-2
Figure 5.2 Sense key inherent information......................................................................................................... 5-4
Figure 5.3 Analysis of the termination status ................................................................................................... 5-13
Tables
Table 1.1 Responses to Link Specification Commands .................................................................................. 1-10
Table 1.2 Types of Command and Disconnect Processing .............................................................................1-12
Table 1.3 Sense data in not ready state............................................................................................................1-25
Table 1.4 Outline of SCSI Bus Error Recovery Processing............................................................................1-27
Table 1.5 Outline of disk drive error recovery processing.............................................................................. 1-27
Table 1.6 Reset processing during write..........................................................................................................1-29
Table 3.1 MODE SENSE Data Type Specifications....................................................................................... 3-33
Table 3.2 Persistent reservation type codes..................................................................................................... 3-61
Table 3.3 PERSISTENT RESERVE OUT command service action codes .................................................... 3-64
Table 3.4 PERSISTENT RESERVE OUT service actions and valid parameters ........................................... 3-66
Table 3.5 FORMAT UNIT command defect processing ................................................................................3-89
Table 3.6 Error recovery control flags during the self-diagnosis test............................................................ 3-101
Table 4.1 Combinations of error recovery flags ...............................................................................................4-7
Table 4.2 MRIE (Methods of reporting informational exception conditions).................................................4-45
Table 4.3 Self-test results values.....................................................................................................................4-68
Table 5.1 Sense key........................................................................................................................................... 5-5
Table 5.2 Additional sense code and additional sense code qualifier................................................................ 5-6
Table 5.3 Sense data error classification ....................................................................................................... 5-15
Table 5.4 Error recovery processing procedures.............................................................................................5-18
Table 5.5 Disk drive errors and number of retries...........................................................................................5-27

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C141-C010 1-1
CHAPTER 1 Command Processing
1.1 Command Format
1.2 Status
1.3 Outline of Command Processing
1.4 Command Queuing Function
1.5 UNIT ATTENTION Condition
1.6 Sense Data Hold State
1.7 Command Processing Exceptions
1.8 Data Block Addressing
This chapter describes the basic logical specifications of the IDD command processing functions.
Note: The IDD operates as the target (TARG) on the SCSI bus. In the explanations in this chapter, the IDD
is mentioned as “TARG”, except in cases where a particularly clear distinction is necessary.
1.1 Command Format
Input/output operation commands from INIT (initiator) to the IDD are accomplished by the CDB
(Command Descriptor Block). The CDB is information transferred from INIT to TARG in the
COMMAND phase. In a number of commands, the parameters which are necessary for command
execution in the DATA OUT phase may be specified in addition to the CDB specification. Details
concerning these are described in the specifications for each individual command in Chapter 3.
The CDB used by the IDD has 3 formats, these formats have length of 6, 10 and 12 bytes.
The basic format of each respective CDB is shown in Figures 1.1, 1.2 and 1.3.
Bit
Byte 7 6 5 4 3 2 1 0
0 Operation Code
1 LUN Logical Block Address (MSB)
2 Logical Block Address
3 Logical Block Address (LSB)
4 Transfer Data Length
5 Control Byte
Figure 1.1 6-Byte CDB Basic Format

Command Processing
1-2 C141-C010
Bit
Byte 7 6 5 4 3 2 1 0
0 Operation Code
1 LUN 0 0 0 0 0
2 Logical Block Address (MSB)
3 Logical Block Address
4 Logical Block Address
5 Logical Block Address (LSB)
6 0 0 0 0 0 0 0 0
7 Transfer Data Length (MSB)
8 Transfer Data Length (LSB)
9 Control Byte
Figure 1.2 10-Byte CDB Basic Format
Bit
Byte 7 6 5 4 3 2 1 0
0 Operation Code
1 LUN 0 0 0 0 0
2 Logical Block Address (MSB)
3 Logical Block Address
4 Logical Block Address
5 Logical Block Address (LSB)
6 Transfer Data Length (MSB)
7 Transfer Data Length (LSB)
8 Transfer Data Length (MSB)
9 Transfer Data Length (LSB)
10 0 0 0 0 0 0 0 0
11 Control Byte
Figure 1.3 12-Byte CDB Basic Format
The meanings of each of the fields in the CDB are explained below. Depending on the type of command,
the basic format of the CDB, the definitions of fields and their meanings may differ. Details are
described in the specifications for each individual command in Chapter 3.