Deskstar 7K400 Hard Disk Drive specification
11
4.0 Drive characteristics
4.1 Default logical drive parameters
Notes:
1. Number of cylinders: For drives with capacities greater than 8.45 GB the Identify Device information word 01 limits the number of cylinders to 16, 383 per
the ATA specification.
2.
Logical layout: Logical layout is an imaginary drive parameter (that is, the number of heads) which is used to access the
drive from the system interface. The logical layout to Physical layout (that is, the actual Head and Sectors ) translation is done
automatically in the drive. The default setting can be obtained by issuing an IDENTIFY DEVICE command.
Table 1: Formatted capacity
HDS724040KLAT20 / HDS724040KLSA80
Physical Layout
Label capacity (GB)
400
Bytes per sector
512
Sectors per track
567-1170
Number of heads
10
Number of disks
5
Data sectors per cylinder
5670-11700
Data cylinders per zone
1200 - 4900
Logical layout
1
Number of heads
16
Number of Sectors per track
63
Number of Cylinders
2
16,383
Number of sectors
781,422,768
Total logical data bytes
400,088,457,216
Summary of Contents for Deskstar 7K400
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