Seagate ST3320820ACE, ST3250820ACE, ST3300820ACE manual DB35.3 Series Pata Product Manual, Rev. C

Drive specification	ST3750840ACE	ST3500830ACE	ST3400820ACE
Vibration, nonoperating	5–22 Hz: 0.25 Gs, Limited displacement
	22–350 Hz: 5.0 Gs
	350–500 Hz:: 1.0 Gs
Drive acoustics, sound power
Idle**	2.8 bels (typical)		2.7 bels (typical)
	3.0 bels (max)		2.9 bels (max)
CE seek profile	2.9 (typical)		2.8 (typical)
	3.0 (max)		2.9 (max)
Nonrecoverable read errors	1 per 1014 bits read
Annualized Failure Rate (AFR)	0.68%
Warranty	5 years on distribution units.
	To determine the warranty for a specific drive, use a web browser to
	access the following web page:
	www.seagate.com/support/service/
	From this page, click on the “Verify Your Warranty” link. You will be asked
	to provide the drive serial number, model number (or part number) and
	country of purchase. The system will display the warranty information for
	your drive.
Contact start-stop cycles (25°C, 50% rel. humidity)	50,000

*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment and formatting.

**During periods of drive idle, some offline activity may occur according to the S.M.A.R.T. specification, which may increase acoustic and power to operational levels.

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