Fujitsu MBA3147RC Product Manual - Page 65

5.4

Checking Operation after Installation and Preparing the HDDs for Use

C141-E252

61

5.4.3

Setting parameters

The user can specify the optimal operation mode for the user system environments by setting the

following parameters with the MODE SELECT or MODE SELECT EXTENDED command:

•

Error recovery parameter

•

Caching parameter

•

Control mode parameter

With the MODE SELECT or MODE SELECT EXTENDED command, specify 1 for the "SP" bit on

CDB to save the specified parameter value on the disk.

This enables the HDDs to operate by using

the parameter value set by the user when power is turned on again.

When the parameters are not set or saved with the MODE SELECT or MODE SELECT

EXTENDED command, the HDDs set the default values for parameters and operates when power is

turned on or after reset.

Although the HDD operations are assured with the default values, the

operations are not always optimal for the system.

To obtain the best performance, set the parameters

in consideration of the system requirements specific to the user.

This section outlines the parameter setting procedures.

Refer to Subsection 4.1.4 "MODE

SELECT (15)", 4.1.5 "MODE SELECT EXTENDED (55)" of the SAS INTERFACE MANUAL for

further details of the MODE SELECT and MODE SELECT EXTENDED commands and specifying

the parameters.

1.

At factory shipment of the HDDs, the saving operation for the MODE

SELECT parameter is not executed.

So, if the user does not set

parameters, the HDDs operates according to the default value of each

parameter

2.

The MODE SELECT parameter is not saved for each initiator ID but as

the common parameter for all initiator.

In the multi- initiator system,

parameter setting cannot be changed for each initiator.

3.

Once parameters are saved, the saved value is effective as long as next

saving operation is executed from the initiator.

For example, even if the

initialization of the disk is performed by the FORMAT UNIT command,

the saved value of parameters described in this section is not affected.

4.

When the HDDs, to which the saving operation has been executed on a

system, are connected to another system, the user must pay attention to

that the HDDs operate according to the saved parameter value if the

saving operation is not executed at installation.

5.

The saved value of the MODE SELECT parameter is assumed as the

initial value of each parameter after the power-on, the RESET condition..

The initiator can change the parameter value temporary (actively) at any

timing by issuing the MODE SELECT or MODE SELECT EXTENDED

command with specifying "0" to the SP bit in the CDB.

Section	Page
Front Cover	1
FOR SAFE OPERATION	2
REVISION RECORD	3
Preface	5
Important Alert Items	7
MANUAL ORGANIZATION	9
CONTENTS	11
Illustrations	15
Figures	15
Tables	16
CHAPTER 1 General Description	17
1.1 Standard Features	17
1.2 Hardware Structure	21
1.3 System Configuration	22
CHAPTER 2 Specifications	23
2.1 Hardware Specifications	23
2.1.1 Model name and order number	23
2.1.2 Function specifications	24
2.1.3 Environmental specifications	27
2.1.4 Error rate	28
2.1.5 Reliability	28
CHAPTER 3 Data Format	31
3.1 Data Space	31
3.1.1 Cylinder configuration	31
3.1.2 Alternate spare area	34
3.1.3 Track format	35
3.1.4 Sector format	36
3.1.5 Format capacity	38
3.2 Logical Data Block Addressing	38
3.3 Defect Management	40
3.3.1 Defect list	40
3.3.2 Alternate block allocation	40
CHAPTER 4 Installation Requirements	45
4.1 Mounting Requirements	45
4.1.1 Dimensions	45
4.1.2 Mounting orientations	47
4.1.3 Notes on mounting	48
4.2 Power Supply Requirements	52
4.3 Connection Requirements	54
4.3.1 Connector location	54
4.3.2 Interface connector	55
4.3.3 Ready LED output signal	57
4.3.4 Connector requirements	57
CHAPTER 5 Installation	59
5.1 Notes on Handling HDDs	59
5.2 Setting	61
5.2.1 Port Address	61
5.3 Mounting HDDs	61
5.3.1 Mounting procedures	61
5.4 Checking Operation after Installation and Preparing the HDDs for Use	62
5.4.1 Checking initial operation	62
5.4.2 Formatting	63
5.4.3 Setting parameters	65
5.5 Dismounting HDDs	68
CHAPTER 6 Diagnostics and Maintenance	69
6.1 Diagnostics	69
6.1.1 Self-diagnostics	69
6.1.2 Test programs	72
6.2 Maintenance	73
6.2.1 Precautions	73
6.2.2 Maintenance requirements	74
6.2.3 Maintenance levels	75
6.2.4 Tools and test equipment	75
6.2.5 Tests	76
6.3 Operation Check	77
6.3.1 Initial seek operation check	77
6.3.2 Operation test	77
6.3.3 Diagnostic test	77
6.4 Troubleshooting	78
6.4.1 Outline of troubleshooting procedures	78
6.4.2 Troubleshooting with HDD replacement in the field	78
6.4.3 Troubleshooting at the repair site	80
6.4.4 Troubleshooting with parts replacement in the factory	81
6.4.5 Finding possibly faulty parts	81
6.5 Packaging	81
6.5.1 Unitary packaging	81
6.5.2 Multi-box packaging	82
CHAPTER 7 Error Analysis	85
7.1 Sense Data Collection	85
7.1.1 Sense data	85
7.1.2 Sense data format	85
7.2 Sense Data Analysis	87
7.2.1 Error information indicated with sense data	87
7.2.2 Sense data (3-0C-03), (4-32-01), (4-40-xx), (4-C4-xx), and (4-44-xx)	88
7.2.3 Sense data (1-1x-xx), (3-1x-xx) and (E-1D-00): Disk read error	88
7.2.4 Sense data (5-2x-xx), (B-47-xx), (B-4B-xx) and (B-4E-00): interface error	88
Glossary	89
Acronyms and Abbreviations	91
Index	93
Comment Form	97

Fujitsu MBA3147RC Product Manual - Page 65

Setting parameters, SELECT 15, 4.1.5 MODE SELECT EXTENDED 55 of the SAS INTERFACE MANUAL

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