4
Barracuda 7200.7 Product Manual, Rev. D
ATA data-transfer modes
supported
PIO modes 0–4
Multiword DMA modes 0–2
Ultra DMA modes 0–5
Cache buffer
2 Mbytes (2,048 kbytes) on ST3160021A, ST3120022A,
ST380011A, and ST340014A models
8 Mbytes (8,192 kbytes) on ST3160023A, ST3120026A, and
ST380013A models
Height (mm max)
26.035 mm (1.028 inches)
Width (mm max)
101.6 mm (4.000 inches)
Length (mm max)
146.99 mm (5.787 inches)
Weight (typical)
635 grams (1.4 lb)
Average latency (msec)
4.16
Power-on to ready
(sec typical)
10 sec
Standby to ready
(sec typical)
10 sec
Startup current (typical)
12V (peak)
2.8 amps
Track-to-track seek time
(msec typical)
<1.0 (read), <1.2 (write)
Average seek time
(msec typical)
8.5
9.0
Average seek,
read (msec typical)
8.5
8.5
Average seek, write
(msec typical)
9.5
9.5
Seek power
(typical)
12.5 watts
Read/write power (typical)
12.0 watts
Idle mode (typical)
7.5 watts
Standby mode
0.9 watts (typical)
Sleep mode
0.9 watts (typical)
Voltage tolerance
(including noise)
5V ± 5%
12V ± 10%
Drive specification
ST3160021A
ST3160023A
ST3120022A
ST3120026A
ST380011A
ST380013A
ST340014A
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