Default Logical Geometry; Physical Organization; Recording And Interface Technology - Seagate Momentus ST9120411AS Product Manual

2.3

Default logical geometry

Cylinders Read/write heads
16,383 16
LBA mode
When addressing these drives in LBA mode, all blocks (sectors) are consecutively numbered from 0 to n–1,
where n is the number of guaranteed sectors as defined above.
2.4

Physical organization

Drive model
ST9320421AS and ST9320421ASG
ST9250421AS and ST9250421ASG
ST9200421AS and ST9200423ASG
ST9160411AS and ST9160411ASG
ST9120411AS and ST9120411ASG
ST980411AS and ST980411ASG
2.5

Recording and interface technology

Interface
Recording method
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 (Gbits/sec)
I/O data-transfer rate (Gbits/sec max)
Interleave
Cache buffer
6
Sectors per track
63
Read/write heads
4
3
3
2
2
1
max)
Number of discs
2
2
2
1
1
1
Serial ATA (SATA)
Perpendicular
1,334k
190k
253
7,200
1.1
3.0
1:1
16 Mbytes (16,384 kbytes)
Momentus 7200.3 SATA Product Manual, Rev. B