Fujitsu MAN3367FC Manual/User Guide - Page 51

3.3

Defect Management

C141-E133-02EN

3-11

When the logical data block is allocated, some sectors (track skew and cylinder skew) shown in

Figure 3.5 are provided to avoid waiting for one turn involving head and cylinder switching at the

location where the track or the cylinder is physically switched.

See Subsection 3.3.2 for defective/alternate block treatment and the logical data block allocation

method in case of defective sectors exist on the disk.

(2)

Alternate area

Alternate areas in the user space (spare sectors in the cylinder and alternate cylinders) are not

included in the above logical data block addresses.

Access to sectors which are allocated as an

alternate block in the alternate area is made automatically by means of IDD sector slip treatment or

alternate block treatment (explained in Subsection 3.3.2), so the user does not have to worry about

accessing the alternate area.

The user cannot access with specifying the data block on the alternate

area explicitly.

3.3

Defect Management

3.3.1

Defect list

Information of the defect location on the disk is managed by the defect list.

The following are defect

lists which the IDD manages.

•

P list (Primary defect list):

This list consists of defect location information available at the disk

drive shipment and is recorded in a system space.

The defects in this list are permanent, so the

INIT must execute the alternate block allocation using this list when initializing the disk.

•

D list (Data defect list):

This list consists of defect location information specified in a FORMAT

UNIT command by the INIT at the initialization of the disk.

This information is recorded in the

system space of the disk drive as the G list.

To execute the alternate block allocation, the

FORMAT UNIT command must be specified.

•

G list (Growth defect list):

This list consists of defective logical data block location information

specified in a REASSIGN BLOCKS command by the INIT, information on defective logical data

blocks assigned alternate blocks by means of IDD automatic alternate block allocation,

information specified as the D list, and information generated as the C list.

They are recorded in

the system space on the disk drive.

The INIT can read out the contents of the P and G lists by the READ DEFECT DATA command.

3.3.2

Alternate block allocation

The alternate data block is allocated to a defective data block (= sectors) in defective sector units by

means of the defect management method inside the IDD.

The INIT can access all logical data blocks in the user space, as long as there is no error.

Spare sectors to which alternate blocks are allocated can be provided in either "spare sectors in a

cylinder" or "alternate cylinders".

See Subsection 3.1.2 for details.

The INIT can specify the size and area for spare sectors by the MODE SELECT command at the

time of the initialization of the disk.

Section	Page
Front Cover	1
FOR SAFE OPERATION	2
Revision History	5
Preface	7
Important Alert Items	11
MANUAL ORGANIZATION	13
REFERENCED STANDARDS	15
CONTENTS	17
CHAPTER 1 General Description	25
1.1 Standard Features	26
1.2 Hardware Structure	29
CHAPTER 2 Specifications	33
2.1 Hardware Specifications	33
2.1.1 Model name and part number	33
2.1.2 Function specifications	34
2.1.3 Environmental specifications	36
2.1.4 Error rate	37
2.1.5 Reliability	37
CHAPTER 3 Data Format	41
3.1 Data Space	41
3.1.1 Cylinder configuration	41
3.1.2 Alternate spare area	44
3.1.3 Track format	45
3.1.4 Sector format	47
3.1.5 Format capacity	49
3.2 Logical Data Block Addressing	50
3.3 Defect Management	51
3.3.1 Defect list	51
3.3.2 Alternate block allocation	51
CHAPTER 4 Installation Requirements	57
4.1 Mounting Requirements	57
4.1.1 External dimensions	57
4.1.2 Mounting	59
4.1.3 Notes on mounting	59
4.2 Power Supply Requirements	63
4.3 Connection Requirements	65
4.3.1 Connector	65
4.3.2 Interface connector	65
CHAPTER 5 Installation	67
5.1 Notes on Handling Drives	67
5.2 Setting	69
5.2.1 Loop ID setting	69
5.2.2 Mode settings	69
5.3 Mounting Drives	70
5.3.1 Mounting procedures	70
5.4 Dismounting Drives	71
5.5 Checking Operation after Installation and Preparing the IDD for Use	72
5.5.1 Checking initial operation	72
5.5.2 Checking connection	73
5.5.3 Formatting	76
5.5.4 Setting parameters	78
5.6 Spare Disk Drive	82
CHAPTER 6 Diagnostics and Maintenance	83
6.1 Diagnostics	83
6.1.1 Self-diagnostics	83
6.1.2 Test programs	86
6.2 Maintenance Information	87
6.2.1 Precautions	87
6.2.2 Maintenance requirements	88
6.2.3 Maintenance levels	90
6.2.4 Revision numbers	91
6.2.5 Tools and test equipment	92
6.2.6 Tests	92
6.3 Operation Check	94
6.3.1 Initial seek operation check	94
6.3.2 Operation test	94
6.3.3 Diagnostic test	94
6.4 Troubleshooting Procedures	95
6.4.1 Outline of troubleshooting procedures	95
6.4.2 Troubleshooting with disk drive replacement in the field	95
6.4.3 Troubleshooting at the repair site	97
6.4.4 Troubleshooting with parts replacement in the factory	98
6.4.5 Finding possibly faulty parts	98
CHAPTER 7 Error Analysis	99
7.1 Error Analysis Information Collection	99
7.1.1 Sense data	99
7.1.2 Sense key, sense code, and subsense code	99
7.2 Sense Data Analysis	101
7.2.1 Error information indicated with sense data	101
7.2.2 Sense data (3-0C-03), (4-40-xx), (4-44-xx), and (4-C4-xx)	102
7.2.3 Sense data (1-1x-xx), (3-1x-xx) and (E-1D-00): Disk read error	102
7.2.4 Sense data (5-2x-xx), (5-3D-00), (5-90-00), (B-47-xx), (B-49-00), (B-4D-xx) and (B-4E-00): fibre channel interface erro	102
CHAPTER 8 Principle of Operation	103
8.1 Outline	103
8.2 Disk Drive Configuration	103
8.2.1 Disks	104
8.2.2 Heads	104
8.2.3 Spindle mechanism	104
8.2.4 Actuator	104
8.2.5 Air filters	104
8.3 Circuit Configuration	105
8.4 Power-On Sequence	107
8.5 Factory-Calibration	108
8.6 Read/Write Circuit	109
8.6.1 Head IC	109
8.6.2 Write circuit	109
8.6.3 Read circuit	111
8.7 Servo Control	111
8.7.1 Servo control circuit	111
8.7.2 Servo format	112
8.7.3 Servo frame format	114
8.7.4 Spindle motor control	114
8.7.5 Voice coil motor control	115
APPENDIX A Locations of Connector	117
A.1 Locations of Connector	118
APPENDIX B Connector Signal Allocation	119
B.1 Interface (FC-SCA) Connector Signal Allocation	120
APPENDIX C Model Names and Product Numbers	121
C.1 Model Names and Product Numbers	122
APPENDIX D Fibre Channel Interface Functions	123
D.1 Fibre Channel Interface Function Specifications	124
Glossary	133
Acronyms and Abbreviations	137
Index	139
READER’S COMMENT FORM	143

Fujitsu MAN3367FC Manual/User Guide - Page 51

Defect Management

Page 51 highlights