Momentus 5400.6 SATA Product Manual, Rev. A
2.4 Physical organization 2.5 Recording and interface tech no logy2.6 Physical characteristics
Drive model Read/write heads Number of discs
ST9500325AS and ST9500325ASG 4 2
ST9320325AS and ST9320325ASG 3 2
ST9250315AS and ST9250315ASG 2 1
ST9160314AS and ST9160314ASG 2 1
ST9120315AS 1 1
Interface Serial ATA (SATA)
Recording method Perpendicular
Recording density BPI (bits/inch avg) 1,490k
Track density TPI (tracks/inch avg) 265k
Areal density (Gbits/inch2 avg) 394
Spindle speed (RPM) (± 0.2%) 5,400
Maximum Internal transfer rate (Mbits/sec) 1,175
I/O data-transfer rate (Mbytes/sec max) 300
Interleave 1:1
Cache buffer 8 Mbytes (8,192 kbytes)
Drive specification
Height (mm)
(inches) 9.5 +/-0.2
0.374 +/-0.0078
Width (mm)
(inches) 69.85 +/-0.25
2.75 +/-0.0098
Length (mm)
(inches) 100.35 +0.55 / -0.25
3.957 +0.079 / -0.0098
Weight (max)
ST9500325AS
ST9500325ASG
ST9320325AS
ST9320325ASG
ST9250315AS
ST9250315ASG
ST9160314AS
ST9160314ASG
ST9120315AS
98.8 grams
0.218 pounds
93.5 grams
0.206 pounds