Seagate U7 ST3120020A, Product Manual

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4 U7 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 1 Mbyte (1,024 kbytes)
Height (mm max) 26.1
Width (mm max) 101.85
Length (mm max) 147.0
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)
9.4 9.0
Average seek,
read
(msec typical)
9.4 9.0
Average seek,
write
(msec typical)
10.5 10.0
Seek power
typical)
13 watts
Read/write power
(typical)
12 watts
Idle mode (typical) 9.5 watts
Standby mode 0.7 watts (typical), 0.75 watts (max)
Sleep mode 0.7 watts (typical), 0.75 watts (max)
Voltage tolerance
(including noise)
5V ± 5%
12V ± 10%
Drive
specification
ST3120020A ST380022A ST360012A ST340012A ST330012A