Fujitsu MBA3147RC, MBC2036RC, MBC2073RC, MBA3300RC, MBA3073RC Defect Management, Defect lists

Models: MBA3300RC MBA3147RC MBA3073RC MBC2073RC MBC2036RC

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CHAPTER 7 Disk Media Management

7.1Defect Management

7.2Disk Media Initialization

7.3Alternate Block Allocation Processing

7.4Background Media Scan (BMS)

7.5Drive Self-Test (DST)

7.6SMART (Self-Monitoring Analysis and Reporting Technology)

In this chapter, disk media defect management methods, treatment methods for media defects which occur during operation, reinitialization procedures and other disk media management methods are discussed. Furthermore, see Chapter 3, "Data Format" in the "Product Manual" concerning details of the data recording format on the disk media.

7.1 Defect Management

(1) Defect lists

Information on the positions of defects in the disk media is managed by the types of defect list shown below. See the description of the FORMAT UNIT command (Section 4.3.1) concerning methods for using the defect lists.

∙ P List Defect position information at the point when the disk drive was shipped from the factory is recorded in this list. The defective portions included in this list are permanent defects, and when the disk media is initialized, it is necessary that this list is used and alternate block processing is executed.

D List This list includes defect position information specified by the INIT in the FORMAT UNIT command when initializing the disk media.

G List This list is composed from the defective logical data block position information specified by the INIT in the REASSIGN BLOCKS command, defective logical data block position information from alternate blocks which have been allocated by the HDD's auto alternate block allocation processing, information specified as the D List and information generated as the C List.

The P List and G List are recorded in the system space on the disk media. The INIT can read the contents of these lists by the READ DEFECT DATA command.

C141-C013

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Fujitsu MBA3147RC, MBC2036RC, MBC2073RC, MBA3300RC, MBA3073RC specifications Defect Management, Defect lists