Deskstar 7K250 Hard Disk Drive Specification
12
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.
4.2 Data sheet
Table 2: Mechanical positioning performance
Data transfer rates (Mbps)
757
Interface transfer rates (Mb/s)
100
Data buffer size
1
(KB)
2048 / 8192
Rotational speed (RPM)
7200
Number of buffer segments (read)
up to 128
Number of buffer segments (write)
up to 63
Recording density - max (Kbpi)
689
Track density [TPI]
87/90 (40/80GB)
90 (120/160GB)
90/93.5 (250GB)
Areal density - max (Gbits/in
2
)
62
Number of data bands
30
Содержание Deskstar 7K250
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