4
Momentus Thin Product Manual, Rev. E
3.0
Drive specifications
Unless otherwise noted, all specifications are measured under ambient conditions, at 25°C, and nominal
power. For convenience, the phrases
the drive
and
this drive
are used throughout this manual to indicate all
models.
3.1
Specification summary table
The specifications listed in this table are for quick reference. For details on specification measurement or defi-
nition, see the appropriate section of this manual
Table 1:
Drive specifications
Drive specification
ST320LT020 - 9YG142
ST250LT003 - 9YG14C
ST160LT003 - 9YG141
Formatted capacity (GB)*
320
250
160
Guaranteed logical blocks (LBA)
625,142,448
488,397,168
312,581,808
Bytes per physical sector
4096
Physical read/write heads
2
1
Disks
1
Cache (MB)
16
Recording density in BPI (bits/in avg)
1397k
Track density TPI (tracks/in avg)
315k
Areal density (Gb/in
2
avg)
425
Spindle speed (RPM)
5400
Average latency (ms)
5.6
Internal transfer rate (Mb/s max)
1044
I/O data transfer rate (Gb/s max)
3.0
ATA data-transfer modes supported
SATA 1.0, Serial ATA Revision 2.6
PIO modes 0–4
Multiword DMA modes 0–2
Ultra DMA modes 0–6
Height (max)
7.0 mm (0.276 in)
Width (max)
70.10 mm (2.76 in)
Length (max)
100.55 mm (3.959 in)
Weight (max)
<92.0 g (<0.203 lb)
Power-on to ready (sec typical)
3.5
Standby to ready (sec typical)
3.0
Track-to-track seek time, read (ms typical) 1.5
Average seek, read (ms typical)
11
Startup current, +5V (max)
1.0A
Read/write power (typical)
Read: 1.30W; Write: 1.65W
Idle mode, low power (typical)
0.48W
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