Hitachi 7K400 Specifications - Page 27
Cylinder allocation
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UPC - 000053412935
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4.4.2 Cylinder allocation Table 4: Cylinder allocation Data Zone 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 Physical Cylinders 2,783 4,500 4,800 4,900 4800 4900 4900 4300 4200 3900 3900 3100 3300 2700 3200 2600 3000 2200 2000 2600 1600 2300 1400 1800 1400 1700 1700 1200 1200 1400 Blk/Trk 1170 1134 1080 1080 1012 1012 990 945 918 900 877 877 855 855 810 810 742 742 742 742 720 675 648 648 648 630 607 607 594 567 Physical cylinder is calculated from the starting data track of 0. It is not relevant to logical CHS. Depending on the capacity some of the inner zone cylinders are not allocated. Data cylinder This cylinder contains the user data which can be sent and retrieved via read/write commands and a spare area for reassigned data. Spare cylinder The spare cylinder is used by Hitachi Global Storage Technologies manufacturing and includes data sent from a defect location. Deskstar 7K400 Hard Disk Drive specification 13
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