Physical Organization; Recording And Interface Technology; Physical Characteristics; Seek Time - Seagate Video 2.5 HDD Product Manual

2.2

Physical organization

Drive model
ST500VT000 and ST500VT001
ST320VT000
ST250VT000
2.3

Recording and Interface Technology

Interface
Recording method
Recording density
Track density
Areal density
Spindle speed
Sustained data transfer rate
I/O data-transfer rate
2.4

Physical Characteristics

All models
ST500VT000, ST320VT000
and ST250VT000
ST500VT001
2.5

Seek time

Seek measurements are taken with nominal power at 25°C ambient temperature. All times are measured using drive diagnostics. The specifications
in the table below are defined as follows:
 Track-to-track seek time is an average of all possible single-track seeks in both directions.
 Average seek time is a true statistical random average of at least 5000 measurements of seeks between random tracks, less overhead.
Table 2 Typical seek times
Typical seek times (ms)
Track-to-track
Average
Average latency
These drives are designed to consistently meet the seek times represented in this manual. Physical seeks,
regardless of mode (such as track-to-track and average), are expected to meet the noted values. However,
Note
due to the manner in which these drives are formatted, benchmark tests that include command overhead
or measure logical seeks may produce results that vary from these specifications.
Seagate Video 2.5 HDD Product Manual, Rev. J (Draft 1)
Read/write heads
2
Serial ATA (SATA)
Perpendicular
1875 Kb/in
375 ktracks/in avg
2
670 Gb/in avg
5400 RPM +/- 0.2%
100 MB/s max
600 MB/s max
Height 6.8 +/- 0.2 mm (0.268 +/-.008 in)
Width 69.85 +/- 0.25 mm (2.750 +/- 0.010 in)
Length 100.35 +0.20 / -0.25 mm (3.951 +0.008 / -0.010 in)
Typical weight <95 g (0.209 lb)
16 MB (16,192 KB)
Cache buffer
32MB (32,384 KB)
Read
1.5
12.0
5.6
Number of disks
1
Drive Specifications
9