Default Logical Drive Parameters; Data Sheet; Drive Characteristics; Table 1.Mechanical Positioning Performance - Hitachi T7K250 - Deskstar - Hard Drive Specifications

4.0 Drive characteristics

4.1 Default logical drive parameters

Physical Layout
Label capacity (GB)
Bytes per sector
Sectors per track
Number of heads
Number of disks
Data sectors per cylinder
Data cylinders per zone
1
Logical layout
Number of heads
Number of Sectors per track
2
Number of Cylinders
Number of sectors
Total logical data bytes
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 1: Mechanical positioning performance
Description
Data transfer rates (Mbps)
Interface transfer rates (Mb/s)
1
Data buffer size (KB)
Rotational speed (RPM)
Number of buffer segments (read)
Number of buffer segments (write)
Recording density - max (Kbpi)
Track density [TPI]
Areal density - max (Gbits/in
Number of data bands
HDT722516DLxxxx
160
512
594-1242
3
2
1782-3726
601-7060
16
63
16,383
321,672,960
164,696,555,520
250 GB Model
843.2
133
8192
7200
up to 128
up to 63
767.7
120
2
92.1
)
30
Deskstar T7K250 Hard Disk Drive Specification
HDT722525DLxxxx
250
512
630-1296
4
2
2520-5184
1810-8341
16
63
16,383
488,397,168
250,059,350,016
200 GB Model
807.8
133
8192
7200
up to 128
up to 63
718.8
110
79.1
30
11
HDT722520DLxxxx
200
512
594-1242
4
2
2376-4968
500-6500
16
63
16, 383
390,721,968
200,049,647,616
160 GB Model
807.8
133
8192
7200
up to 128
up to 63
712.4
114
81.21
30