Momentus 4200.2 Product Manual, Rev. D
3
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
ST9100822A, ST9808210A, ST960821A, ST950212A, ST9402113A, and ST930219A 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
Drive specification
ST9100822A ST9808210A ST960821A
ST950212A
ST9402113A
ST930219A
Formatted Gbytes
(512 bytes/sector)
100
80
60
50
40
30
Guaranteed sectors
195,371,568
156,301,488
117,210,240
97,696,368
78,140,160
58,605,120
Bytes per sector
512
Physical read/write heads
4
3
3
2
2
2
Discs
2
2
2
1
1
1
Cache (Mbytes)
8
2
Recording density, BPI
(bits/inch typical)
703,000
Track density. TPI
(tracks/inch typical
115,000
Areal density (Gbits/inch
2
max)
86
Spindle speed (RPM)
4,200 RPM-Class Performance (Actual spin speed 5,400 RPM)
Internal data transfer rate OD
(Mbytes/sec max)
48.25
I/O data-transfer rate
(Mbytes/sec max)
100
ATA data-transfer
modes supported
PIO modes 0–4; Multiword DMA modes 0–2; Ultra DMA modes 0–5
Height
9.5+/–0.2 mm (0.374 +/–.008 inches)
Width
69.85 +/–0.25 mm (2.750 +/–0.010 inches)
Length
100.2 +/–0.25 mm (3.945 +/–0.010 inches)
Weight (typical)
100 grams (0.22 lb)
Average latency (msec)
5.6
Power-on to ready (sec typical)
3.5
Standby to ready (sec typical)
3.0
Startup current 5V (typical)
1.0 amps
Track-to-track seek time
(msec typical)
1.0 (read), 1.5 (write)
