ass6.5-hint - if the disk has 8 usable surfaces, see below....

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Hit for 6.5 Concepts Logical record : in bank system, a logical record may be The following is 22 logical records …… Physical record: in hard disk, a sector is a physical record, see next page.
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A sector is a physical record
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but 8 sectors on the same cylinder is another kind of physical record
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Unformatted text preview: if the disk has 8 usable surfaces, see below. So, 8 red sectors form a physical record. 2 read/write heads . . . . . . . . This is a physical record In this problem, each physical record contains thirty 120-byte logical records. So, a physical record has 30x120 bytes which need 3600/512 sectors. The 8 sectors can be put on the same cylinder....
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This note was uploaded on 03/31/2010 for the course SOFTWARE I c0327 taught by Professor Li during the Spring '09 term at Nanjing University.

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ass6.5-hint - if the disk has 8 usable surfaces, see below....

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