Seagate ST500LX015 ユーザーズマニュアル
S
EAGATE
U
LTRA
M
OBILE
SSHD P
RODUCT
M
ANUAL
, R
EV
. D
6
D
RIVE
S
PECIFICATIONS
2.2
P
HYSICAL ORGANIZATION
Drive model
Read/write heads
Number of discs
All models
2
1
2.3
R
ECORDING AND
I
NTERFACE
T
ECHNOLOGY
Recording method
Perpendicular
Recording density
1885 Kb/in
Track density
366 ktracks/in avg
Areal density
690 Gb/in
2
avg
Spindle speed
5400 RPM +/- 0.2%
Sustained data transfer rate
100 MB/s max
I/O data-transfer rate
600 MB/s max
2.4
P
HYSICAL
C
HARACTERISTICS
Height
5.0 +/- 0.2 mm (0.197 +/-.008 in) (Standard models)
5.2 +/- 0.2 mm (0.205 +/-.008 in) (FIPS models only)
5.2 +/- 0.2 mm (0.205 +/-.008 in) (FIPS models only)
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
93 g (0.205 lb)
Cache buffer
64 MB (64,768 KB)
2.5
S
EEK 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.
Interface
Serial ATA (SATA)
All models
Table 2
Typical seek times
Typical seek times (ms)
Read
Track-to-track
1.5
Average
13.0
Average latency
5.6
N
OTE
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, 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.
Physical seeks, regardless of mode (such as track-to-track and average), are expected to meet
the noted values. However, 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.