Fujitsu MAX3147RC, MAX3036RC, MAX3073RC manual Setting parameters

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5.4Checking Operation after Installation and Preparing the HDDs for Use

5.4.3Setting 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 Interface Specifications 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 INIT ID but as the common parameter for all INIT. In the multi-INIT System, parameter setting cannot be changed for each INIT.

3.Once parameters are saved, the saved value is effective as long as next saving operation is executed from the INIT. 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 INIT 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.

C141-E237

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Contents C141-E237-01EN For Safe Operation Revision Record Related Standards Overview of Manual PrefaceConventions for Alert Messages PrefaceImportant Alert Messages Important Alert ItemsData loss Important Alert ItemsSpecifications Maintenance ManualManual Organization Product InterfaceThis page is intentionally left blank Contents Contents InstallationGL-1 Figures Tables This page is intentionally left blank Standard Features Standard Features Hardware Structure System ConfigurationGeneral Description Standard Features General Description Hardware Structure System Configuration Hardware Specifications Model name and order number Hardware SpecificationsModel names and order numbers Function specifications SpecificationsMAX3147RC MAX3073RC MAX3036RC Hardware Specifications Environmental/Power requirements Environmental specificationsReliability Error rateMtbf = Specifications Data Space Logical Data Block Addressing Defect Management Cylinder configurationData Space Data Format Data Space Spare area in cell Alternate spare areaTrack format Sector format Track skew/head skewData Space Format capacity Logical Data Block Addressing Alternate block allocation Defect Management Defect listDefect Management Alternate block allocation by Format Unit commandAlternate block allocation by Reassign Blocks command Write Write Extend Write Write Extended Format Unit Mounting Requirements Dimensions Installation RequirementsMounting orientations Installation RequirementsMounting frame structure example Mounting RequirementsLimitation of side-mounting HDC Surface temperature check point and maximum temperatureMPU Service clearance area Current waveform +12V DC Power Supply RequirementsInterface connector CN1 power lines included Connection Requirements Interface connectorInterface connector SAS plug signal allocationCN1 11 Recommended external circuit for Ready LED output Ready LED output signalThis page is intentionally left blank Installation Installation Setting Port Address SettingMounting Drives Mounting procedures Installation Formatting Installation Setting parameters Arre AwreArre Awre PER Xffff DiscXxxx Dismounting Drives Self-diagnostic functions Diagnostics Self-diagnosticsDiagnostics and Maintenance Diagnostics Test programs Precautions Maintenance InformationMaintenance requirements Revision numbers Maintenance levelsIndicating revision numbers Tools and test equipment Tests Test flowchartOperation Check Initial seek operation check Diagnostic testOperation test Troubleshooting with disk drive replacement in the field Troubleshooting ProceduresSystem-level field troubleshooting Disk drive troubleshooting Troubleshooting at the repair siteFinding possibly faulty parts Troubleshooting with parts replacement in the factoryError Analysis Information Collection Sense data Error Analysis Information Collection Sense Data AnalysisILI Error AnalysisLSB SksvDefinition of sense data Sense Data AnalysisSense data 3-0C-03, 4-32-01, 4-40-xx, 4-C4-xx, Sense data 1-1x-xx, 3-1x-xx and E-1D-00 Disk read errorGlossary Target Targ GlossaryAcronyms and Abbreviations VPD Acronyms and AbbreviationsECC BcrcIndex Mode SELECT/MODE SelectMtbf Mttr PADC141-E237 IN-3 This page is intentionally left blank Comment Form This page is intentionally left blank