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2.0
Drive specifications
Unless otherwise noted, all specifications are measured under ambient conditions, at 25°C, and nominal
power. For convenience, the phrases the drive and this drive are used throughout this manual to indicate the
ST9160824AS, ST9120827AS and ST980816AS models.
2.1
Specification summary table
The specifications listed in this table are for quick reference. For details on specification measurement or defi-
nition, see the appropriate section of this manual.
Table 1:
Drive specifications
Drive specification
Formatted Gbytes
(512 bytes/sector)*
Guaranteed sectors
Bytes per sector
Physical read/write heads
Discs
Cache (Mbytes)
Recording density in BPI (bits/inch max)
Track density TPI (tracks/inch max)
2
Areal density (Gbits/inch
max)
Spindle speed (RPM)
Internal transfer rate (Mbits/sec max)
I/O data transfer rate (Mbytes/sec max)
ATA data-transfer modes supported
Height (max)
Width (max)
Length (max)
Weight (typical)
Average latency (msec)
Power-on to ready (sec typical)
Standby to ready (sec typical)
Track-to-track seek time (msec typical)
Average seek, read (msec typical)
Average seek, write (msec typical)
Full-stroke seek (msec)
Momentus 5400 FDE.2 SATA Product Manual, Rev. B
ST9160824AS
ST9120827AS
160
120
312,581,808
234,441,648
512
4
3
2
2
8
870k
150k
132
5,400
352
150
SATA 1.0, Serial ATA Revision 2.5
PIO modes 0–4
Multiword DMA modes 0–2
Ultra DMA modes 0–6
9.5 +/- 0.2 mm (0.374 +/- .0078 inches)
69.85 mm (2.75 +/- 0.0098 inches)
100.50 +/- 0.25 mm (3.957 +/- 0.010 inches)
100 grams (0.22 lb)
5.6
3.0
3.0
1.0 (read), 1.5 (write)
12.5
14.5
22 (typical); 24 (max)
ST980816AS
80
156,301,488
2
1
96 grams (0.21 lb)
3
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