S
EAGATE
L
APTOP
T
HIN
HDD P
RODUCT
M
ANUAL
, R
EV
. K
6
D
RIVE
S
PECIFICATIONS
2.1.1
LBA mode
When addressing these drives in LBA mode, all blocks (sectors) are consecutively numbered from 0 to
n–1,
where
n
is
the number of
guaranteed sectors as defined above.
Refer to
Configuring and Mounting the Drive
on page 16 (words 60-61 and 100-103) for additional information about 48-bit addressing
support of drives with capacities over 137 GB.
2.2
Physical organization
Drive model
Read/write heads
Number of discs
ST500LT012, ST500LT015, ST500LT025 andST500LT034
2
1
ST320LT012, ST320LT015, ST320LT025 andST320LT032
ST250LT012, ST250LT015, ST250LT025 andST250LT028
2.3
Recording and Interface Technology
Recording method
Perpendicular
Recording density
1875 Kb/in
Track density
375 ktracks/in avg
Areal density
670 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
Physical Characteristics
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)
Cache buffer
16 MB (16,192 KB)
Interface
Serial ATA (SATA)
All models
