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Momentus Product Manual, Rev. B 7
3.5 Recording and interface technology
Interface Serial ATA (SATA)
Recording method Perpendicular
Recording density BPI (bits/in max) 1,586k
Track density TPI (tracks/in max) 341k
Areal density (Gb/in
2
max) 541
Spindle speed (RPM) (± 0.2%)
(ST9750423AS, ST9750423ASG, ST9640424AS, ST9640423AS
an
d ST9640423ASG models only)
5400
Spindle speed (RPM) (± 0.2%) (all other models) 7200
Maximum Internal transfer rate (Gb/s)
(ST9750423AS and ST9750423ASG models)
1130
Maximum Internal transfer rate (Gb/s)
(ST9750422AS, ST9750420AS, ST9750420ASG, ST9500424AS,
ST9500423AS and ST9500423ASG models)
1305
Maximum Internal transfer ra
te (Gb/s)
(ST9640424AS, ST9640423AS and ST9640423ASG models)
950
I/O data-transfer rate (Gb/s max) 3.0
Interleave 1:1
Cache buffer 16MB (16,384KB)
3.6 Physical characteristics
Drive specification
Height (mm)
(in)
9.5 +/-0.2
0.370 +/-0.008
Width (mm)
(in)
69.85 +/-0.25
2.750 +/-0.010
Length (mm)
(in)
100.35 +0.20 / -0.25
3.951 +0.008 / -.010
Typical weight
all models
115 g
0.254 lb