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4 Momentus Thin Product Manual, Rev. C Gen-2
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
ST320LT007 - 9ZV142
ST320LT009 - 9WC142
ST320LT011 - 9ZVG42
ST320LT014 - 9YK142
ST250LT007 - 9ZV14C
ST250LT009 - 9WC14C
ST250LT011 - 9ZVG4C
ST250LT014 - 9YK14C
ST160LT007 - 9ZV14D
ST160LT009 - 9WC14D
ST160LT011 - 9ZVG4D
ST160LT014 - 9YK14D
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) 7200
Average latency (ms) 4.17
Internal transfer rate (Mb/s max) 1247
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