Fujitsu MCF3064AP, MCE3064AP manual Defect Management 2.3.1 Defect management schematic diagram

Models: MCE3130AP MCE3064AP MCF3064AP

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2.3Defect Management

2.3Defect Management

2.3.1Defect management schematic diagram

Defective sectors on the disk shall be replaced by good sectors according to the defect management scheme as follows: Defective sectors found during surface certification are handled by a sector slipping algorithm. Defective sectors found after initialization are handled by a linear replacement algorithm.

Figure 2.2 shows the algorithms for alternate processing.

(a) Sector slipping algorithm

(b) Linear replacement algorithm

Figure 2.2 Algorithms for alternate processing

The user area is divided into several groups during media initialization. Each group contains data sectors and spare sectors. Spare sectors are used as replacements for defective data sectors. Media initialization can include a certification of the user area.

Figure 2.3 shows an example of alternate processing.

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C156-E142-02EN

Page 45
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Fujitsu MCF3064AP manual Defect Management 2.3.1 Defect management schematic diagram, 2 Algorithms for alternate processing