Drive Specifications; Specification Summary - Seagate ST9120822A - Momentus 5400.3 120 GB Hard Drive Product Manual

2.0

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
ST9160821A, ST9120822A, ST9100828A, ST980815A, ST960815A, and ST940815A model drives.
2.1

Specification summary

The specifications listed in this table are for quick reference. For details on specification measurement or
definition, see the appropriate section of this manual.
Table 1: Specifications for 160 and 120 Gbyte models
Drive specification
Formatted Gbytes (512 bytes/sector)*
Guaranteed sectors
Bytes per sector
Physical read/write heads
Discs
Cache (Mbytes)
Recording density, BPI (bits/inch typical)
Track density, TPI (tracks/inch typical)
2
Areal density (Gbits/inch max)
Spindle speed (RPM)
Internal data transfer rate (Mbits/sec max)
I/O data-transfer rate (Mbytes/sec max)
ATA data-transfer modes supported
Height
Width
Length
Weight (typical)
Average latency (msec)
Power-on to ready (sec typical)
Standby to ready (sec typical)
Track-to-track seek time (msec typical)
Average random seek , write (msec typical)
Average random seek, read (msec typical)
Average random seek, (msec typical)
Full-stroke seek (msec)
Startup current 5V (typical)
Momentus 5400.3 PATA Product Manual, Rev. C
ST9160821A
160
312,581,808
512
4
2
8
835k
150k
132
5,400
352
100
PIO modes 0–4
Multiword DMA modes 0–2
Ultra DMA modes 0–5
9.5 +/-0.2 mm (0.374 +/-.008 inches)
69.85 +/-0.25 mm (2.750 +/-0.010 inches)
100.50 +/-0.25 mm (3.957 +/-0.010 inches)
102 grams (0.22 lb)
5.6
3.0
3.0
1.0 (read), 1.5 (write)
13.0
11.0
12.5
22 (typical); 24 (max)
1.0 amps
ST9120822A
120
234,441,648
3
3