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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
Formatted capacity (GB)*
Guaranteed logical blocks (LBA)
Bytes per physical sector
Physical read/write heads
Disks
Cache (MB)
Recording density in BPI (bits/in avg)
Track density TPI (tracks/in avg)
2
Areal density (Gb/in
avg)
Spindle speed (RPM)
Average latency (ms)
Internal transfer rate (Mb/s max)
I/O data transfer rate (Gb/s max)
ATA data-transfer modes supported
Height (max)
Width (max)
Length (max)
Weight (max)
Power-on to ready (sec typical)
Standby to ready (sec typical)
Track-to-track seek time, read (ms typical)
Average seek, read (ms typical)
Startup current, +5V (max)
Read/write power (typical)
Idle mode, low power (typical)
4
ST320LT020 - 9YG142
320
625,142,448
4096
2
1
16
1397k
315k
425
5400
5.6
1044
3.0
SATA 1.0, Serial ATA Revision 2.6
PIO modes 0–4
Multiword DMA modes 0–2
Ultra DMA modes 0–6
7.0 mm (0.276 in)
70.10 mm (2.76 in)
100.55 mm (3.959 in)
<92.0 g (<0.203 lb)
3.5
3.0
1.5
11
1.0A
Read: 1.30W; Write: 1.65W
0.48W
ST250LT003 - 9YG14C
250
488,397,168
Momentus Thin Product Manual, Rev. E
ST160LT003 - 9YG141
160
312,581,808
1
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