Physical Organization; Recording And Interface Technology; Physical Characteristics - Seagate ST9120824A - Momentus 4200.2 120 GB Hard Drive Product Manual

2.4

Physical organization

Model Read/write heads
ST9120824A 4
ST9100825A 4
ST980829A 3
ST960812A 2
ST9402112A 2
ST930218A 1
2.5

Recording and interface technology

Technology
Interface
Recording method
Recording density BPI (bits/inch typical)
Track density TPI (tracks/inch typical)
2
Areal density (Mbits/inch
Spindle speed (RPM) (± 0.2%)
Internal data-transfer rate OD (Mbytes/sec max)
I/O data-transfer rate (Mbytes/sec max)
Interleave
Cache buffer
2.6

Physical characteristics

Height (mm)
(inches)
Width (mm)
(inches)
Length (mm)
(inches)
Typical weight (grams)
(pounds)
6
Number of discs
2
2
2
1
1
1
Specification
Parallel ATA
RLL 0,11
778k
126k
max) 98.2
4,200 RPM-class performance (actual spin speed: 5,400 RPM)
37
100 (Ultra DMA mode 5)
1:1
8 Mbytes (8,184 kbytes)
9.5 +/-0.2
0.374 +/-0.008
69.85 +/-0.25
2.750 +/-0.010
100.2 +/-0.25
3.945 +/-0.010
100
0.22
Momentus 4200.2 Product Manual, Rev. A