Fujitsu MAV2073RC, MAV2036RC manual Alternate spare area, Spare area in cell

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Data Format

3.1.2Alternate spare area

The alternate spare area consists of the last track of each cell in the user space and an alternate cylinder allocated to the last cylinder of each zone.

The spare area in each cell is placed at the end of the last track as shown in Figure 3.2. These spare sectors are located in the end of the track logically, not necessarily located at the end physically because of track skew or cylinder skew. (Details are explained on Subsection 3.1.3.)

Size can be specified by the MODE SELECT command.

The number of spare sectors per cell can be specified from 0 to 200. The default for the spare sectors number is 200.

Cell

Note: This drive manages alternate spare areas for each cell, which is a set of cylinders. One cell consists of 27 cylinders.

Figure 3.2 Spare area in cell

An alternate cylinder is used when spare sectors in a cell are used up or 0 is specified as the number of spare sectors in a cell. 1 cylinder at the end of each zone of the user space is allocated as alternate cylinders as shown in Figure 3.3.

The user space and the CE space share the alternate cylinders.

Zone

Note: The number of alternate cylinders cannot be changed.

Figure 3.3 Alternate cylinder

3-4

C141-E219

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Contents C141-E219-01EN For Safe Operation Revision Record Related Standards Preface Overview of ManualPreface Conventions for Alert MessagesImportant Alert Items Important Alert MessagesImportant Alert Items Data lossMaintenance Manual SpecificationsManual Organization Product InterfaceThis page is intentionally left blank Contents Installation ContentsSense data 4-44-xx, 5-2x-xx, B-44-xx, B-47-xx, B-4B-xx Troubleshooting with disk drive replacement in the fieldTroubleshooting with parts replacement in the factory Figures Tables This page is intentionally left blank Standard Features Hardware Structure System Configuration General DescriptionStandard Features General DescriptionStandard Features General Description Hardware Structure System Configuration Model names and order numbers Hardware SpecificationsHardware Specifications Model name and order number Specifications Function specificationsMAV2073RC MAV2036RC 32/34 MeeprmlHardware Specifications Environmental specifications Environmental/Power requirementsMTBF= Error rateReliability Specifications Data Space Cylinder configurationData Space Logical Data Block Addressing Defect Management Data Format Data Space Alternate spare area Spare area in cellTrack format Track skew/head skew Sector formatData Space Format capacity Logical Data Block Addressing Defect Management Defect list Alternate block allocationAlternate block allocation by Format Unit command Defect ManagementAlternate block allocation by Reassign Blocks command Write Write Extend Write Write Extended Format Unit Installation Requirements Mounting Requirements DimensionsInstallation Requirements Mounting orientationsMounting Requirements Mounting frame structure Surface temperature check point and maximum temperature Connection RequirementsHDC MPUService clearance area Power Supply Requirements Current waveform +12V DCConnector location Interface connector 10 SAS plug connector overviewInterface connector SAS plug signal allocationCN1 Installation Installation Mounting Drives Mounting procedures SettingSetting Port Address Installation Formatting Installation Setting parameters Arre Awre PER AwreArre Xxxx DiscXffff Dismounting Drives Diagnostics Self-diagnostics Self-diagnostic functionsDiagnostics and Maintenance Diagnostics Test programs Maintenance Information PrecautionsMaintenance requirements Maintenance levels Revision numbersIndicating revision numbers Tools and test equipment Test flowchart TestsOperation test Diagnostic testOperation Check Initial seek operation check Troubleshooting Procedures Troubleshooting with disk drive replacement in the fieldSystem-level field troubleshooting Troubleshooting at the repair site Disk drive troubleshootingTroubleshooting with parts replacement in the factory Finding possibly faulty partsError Analysis Information Collection Sense Data Analysis Error Analysis Information Collection Sense dataError Analysis ILILSB SksvSense Data Analysis Definition of sense dataSense data 1-1x-xx, 3-1x-xx and E-1D-00 Disk read error Sense data 3-0C-03, 4-40-xx, and 4-C4-xxGlossary Glossary Target TargAcronyms and Abbreviations Acronyms and Abbreviations SASBcrc ECCMode SELECT/MODE Select IndexMtbf Mttr PADC141-E219 IN-3 This page is intentionally left blank Comment Form This page is intentionally left blank