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4.0 Fixed disk characteristics
4.1 Formatted capacity
61,492,838,400
41,174,138,880
30,738,677,760
20,576,747,520
10,278,051,840
Total logical data bytes
120,103,200
80,418,240
60,036,480
40,188,960
20,074,320
Number of sectors
16,383
16,383
16,383
16,383
16,383
Number of cylinders (2)
63
63
63
63
63
Number of sectors/track
16
16
16
16
16
Number of heads
Logical layout (1)
1100–2700
1100–2700
1100–2700
1100–2700
1100–2700
Data cylinders per zone
2238–4680
1492–3120
1119–2340
746–1560
373–780
Data sectors per
cylinder
3
2
2
1
1
Number of data disks
6
4
3
2
1
Number of data heads
373–780
373–780
373–780
373–780
373–780
Sectors per track
512
512
512
512
512
Bytes per sector
61.5
41
30.7
20.5
10
Label capacity (GB)
Physical Layout
60 GB
40 GB
30 GB
20 GB
10 GB
Drive capacity
Figure 1. Formatted Capacity
Note (1): Logical Layout
Logical layout is an imaginary HDD parameter (that is the number of Heads) which is used to access the
HDD from the system interface. The Logical layout to Physical layout (that is the actual number of Head
and Sectors) translation is done automatically in the HDD. The default setting can be obtained by issuing
an IDENTIFY DEVICE command.
Note (2): 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.
4.2 Data sheet
18
Data Bands
14.8 (Gb/in
2
)
Areal Density
34 (kTPI)
Track Density
Up to 44 (kBPI)
Recording Density
Up to 44
Number of Buffer segments (write)
Up to 12
Number of Buffer segments (read)
2,048 (KB)
Data buffer size
1
100 (MB/s)
Data transfer rates (host to/from buffer)
—Interface transfer rate
495 (Mb/s)
Data transfer rates (buffer to/from media)
7,200 (RPM)
Rotational Speed
Figure 2. Mechanical positioning performance
1
The Upper 132 KB is used for firmware
.
Deskstar 60 GXP Hard disk drive specification
9
Содержание IC35L020 - Deskstar 20 GB Hard Drive
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