Home » Fujitsu Manuals » Hard Drives » Fujitsu MAP3367NC » Manual Viewer

Fujitsu MAP3367NC Manual/User Guide - Page 45

Format capacity, 3.2 Logical Data Block Addressing

UPC - 000004119623

Add to My Manuals
Save this manual to your list of manuals

Page 45 highlights

3.1.5 Format capacity The size of the usable area for storing user data on the IDD (format capacity) varies according to the logical data block or the size of the spare sector area. Table 3.4 lists examples of the format capacity when the typical logical data block length and the default spare area are used. The following is the general formula to calculate the format capacity. [Number of sectors of each zone] = [number of sectors per track × number of tracks per cell - number of alternate spare sectors per cell] × [number of cells in the zone] [Formatted capacity] = [total of sectors of all zones] ÷ [number of physical sectors in logical block] × [logical data block length] The following formula must be used when the number of logical data blocks are specified with the parameter in the MODE SELECT or MODE SELECT EXTENDED command. [Format capacity] = [logical data block length] × [number of logical data blocks] The logical data block length, the maximum logical block address, and the number of the logical data blocks can be read out by a READ CAPACITY, MODE SENSE, or MODE SENSE EXTENDED command after initializing the disk medium. Table 3.4 Format capacity Model Data heads Data block length MAP3147NC/NP 8 MAP3735NC/NP 4 512 MAP3367NC/NP 2 User blocks 287,132,440 143,571,316 71,775,284 Format capacity (GB) 147.01 73.50 36.74 Note: Total number of spare sectors is calculated by adding the number of spare sectors in each primary cylinder and the number of sectors in the alternate cylinders. 3.2 Logical Data Block Addressing Independently of the physical structure of the disk drive, the IDD adopts the logical data block addressing as a data access method on the disk medium. The IDD relates a logical data block address to each physical sector at formatting. Data on the disk medium is accessed in logical data block units. The INIT specifies the data to be accessed using the logical data block address of that data. The logical data block addressing is a function whereby individual data blocks are given addresses of serial binaries in each drive. C141-E166 3-9

Section	Page
Front Cover	1
FOR SAFE OPERATION	2
REVISION RECORD	3
PREFACE	5
Important Alert Items	7
CONTENTS	11
FIGURES	15
TABLES	17
CHAPTER 1 GENERAL DESCRIPTION	19
1.1 Standard Features	20
1.2 Hardware Structure	24
1.3 System Configuration	27
CHAPTER 2 SPECIFICATIONS	29
2.1 Hardware Specifications	29
2.1.1 Model name and order number	29
2.1.2 Function specifications	30
2.1.3 Environmental specifications	32
2.1.4 Error rate	33
2.1.5 Reliability	33
2.2 SCSI Function Specifications	35
CHAPTER 3 DATA FORMAT	37
3.1 Data Space	37
3.1.1 Cylinder configuration	37
3.1.2 Alternate spare area	40
3.1.3 Track format	41
3.1.4 Sector format	43
3.1.5 Format capacity	45
3.2 Logical Data Block Addressing	45
3.3 Defect Management	47
3.3.1 Defect list	47
3.3.2 Alternate block allocation	47
CHAPTER 4 INSTALLATION REQUIREMENTS	53
4.1 Mounting Requirements	53
4.1.1 External dimensions	53
4.1.2 Mounting	56
4.1.3 Notes on mounting	56
4.2 Power Supply Requirements	60
4.3 Connection Requirements	63
4.3.1 68 pin connector 16-bit SCSI model (NP model)	63
4.3.2 SCA2 type SCSI model (NC model)	71
4.3.3 Cable connector requirements	72
4.3.4 External operator panel (on NP model drives only)	74
CHAPTER 5 INSTALLATION	75
5.1 Notes on Handling Drives	75
5.2 Connections	77
5.3 Setting Terminals	79
5.3.1 SCSI ID setting (NP model only)	80
5.3.2 Each mode setting (NP model only)	81
5.3.3 Mode settings	83
5.4 Mounting D ives	84
5.4.1 Check before mounting	84
5.4.2 Mounting p ocedures	84
5.5 Connecting Cables	85
5.6 Confirming Operations after Installation and Preparation for use	86
5.6.1 Confirming initial operations	86
5.6.2 Checking SCSI connection	87
5.6.3 Formatting	90
5.6.4 Setting parameters	92
5.7 Dismounting Drives	96
5.8 Spare Disk Drive	96
CHAPTER 6 DIAGNOSTICS AND MAI TENANCE	97
6.1 Diagnostics	97
6.1.1 Self-diagnostics	97
6.1.2 Test programs	100
6.2 Maintenance Information	101
6.2.1 Precautions	101
6.2.2 Maintenance requirements	102
6.2.3 Maintenance levels	104
6.2.4 Revision numbers	105
6.2.5 Tools and test equipment	106
6.2.6 Tests	106
6.3 Operation Check	108
6.3.1 Initial seek operation check	108
6.3.2 Operation test	108
6.3.3 Diagnostic test	108
6.4 Troubleshooting Procedures	109
6.4.1 Outline of troubleshooting procedures	109
6.4.2 Troubleshooting with disk drive replacement in the field	109
6.4.3Troubleshooting at the repair site	111
6.4.4 Troubleshooting with parts replacement in the factory	112
6.4.5 Finding possibly faulty parts	112
CHAPTER 7 ERROR ANALYSIS	113
7.1 Error Analysis Information Collection	113
7.1.1 Sense data	113
7.1.2 Sense key,sense code,and subsense code	113
7.2 Sense Data Analysis	115
7.2.1 Error information indicated with sense data	115
7.2.2 Sense data (3-0C-03),(4-40-xx),(4-44-xx),and (4-C4-xx)	116
7.2.3 Sense data (1-1x-xx),(3-1x-xx)and (E-1D-00):Disk read error	116
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): SCSI interface error	116
APPENDIX A SETTING TERMINALS	117
A.1 Setting Terminals (on NP model only)	118
APPENDIX B CONNECTOR SIGNAL ALLOCATION	119
B.1 SCSI Connector Signal Allocation:68 pin type LVD 16-bit SCSI	120
B.2 SCSI Connector Signal Allocation:SCA2 type LVD 16-bit SCSI	121
INDEX	123
Addresses	127
Reader Comment Form	129

Match case Limit results 1 per page

C141-E166

3-9

3.1.5

Format capacity

The size of the usable area for storing user data on the IDD (format capacity) varies according to

the logical data block or the size of the spare sector area.

Table 3.4 lists examples of the format

capacity when the typical logical data block length and the default spare area are used.

The

following is the general formula to calculate the format capacity.

[Number of sectors of each zone] = [number of sectors per track

number of tracks per cell –

number of alternate spare sectors per cell]

[number of cells in the zone]

[Formatted capacity] = [total of sectors of all zones]

[number of physical sectors in logical

block]

[logical data block length]

The following formula must be used when the number of logical data blocks are specified with the

parameter in the MODE SELECT or MODE SELECT EXTENDED command.

[Format capacity] = [logical data block length]

[number of logical data blocks]

The logical data block length, the maximum logical block address, and the number of the logical

data blocks can be read out by a READ CAPACITY, MODE SENSE, or MODE SENSE

EXTENDED command after initializing the disk medium.

Table 3.4

Format capacity

Model

Data heads

Data block length

User blocks

Format capacity (GB)

MAP3147NC/NP

287,132,440

147.01

MAP3735NC/NP

143,571,316

73.50

MAP3367NC/NP

512

71,775,284

36.74

Note:

Total number of spare sectors is calculated by adding the number of spare sectors in each

primary cylinder and the number of sectors in the alternate cylinders.

3.2

Logical Data Block Addressing

Independently of the physical structure of the disk drive, the IDD adopts the logical data block

addressing as a data access method on the disk medium.

The IDD relates a logical data block

address to each physical sector at formatting.

Data on the disk medium is accessed in logical data

block units.

The INIT specifies the data to be accessed using the logical data block address of that

data.

The logical data block addressing is a function whereby individual data blocks are given addresses

of serial binaries in each drive.