Physical Organization; Recording And Interface Technology; Physical Characteristics - Seagate ST9120823AS - Momentus 7200.2 120 GB Hard Drive Product Manual

2.4

Physical organization

Drive model
ST9200420AS and ST9200420ASG
ST9160823AS and ST9160823ASG
ST9120823AS
ST9100821AS
ST980813AS and ST980813ASG
2.5

Recording and interface technology

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

Physical characteristics

Drive specification
Height (mm)
(inches)
Width (mm)
(inches)
Length (mm)
(inches)
Typical weight (grams)
(pounds)
6
max)
9.5 +/-0.2
0.374 +/-0.0078
69.85 +/-0.25
2.75 +/-0.00984
100.5+/- 0.25
3.957 +/- 0.00984
115 grams
(0.254 lb)
Read/write heads
4
3
2
200 GB models
Serial ATA (SATA)
1,014,000
162,600
169.4
7,200
850
69.5
300 (can also be configured for 150MB/s operation)
1:1
16 Mbytes (16,384 kbytes)
Momentus 7200.2 SATA Product Manual, Rev. D
Number of discs
2
1
160 - 80 GB models
853,000
155,000
131
711
59
8 Mbytes (8,192 kbytes)