Maxtor STM3250310AS, STM3160815AS, STM3160215AS DiamondMax 21 Serial ATA Product Manual, Rev. C

Drive specification	STM3320820AS	STM3320620AS
Vibration, operating	5–22 Hz: 0.25 Gs, Limited displacement
	22–350 Hz: 0.50 Gs
	350–500 Hz:: 0.25 Gs
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**	2.5 bels (typical)
	2.9 bels (max)
Performance seek	3.0 bels (typical)
	3.2 bels (max)
Nonrecoverable read errors	1 per 1014 bits read
Annualized Failure Rate (AFR)	0.34%
Warranty	3 years on distribution units.
Contact start-stop cycles	50,000 at 25°C, 50% rel. humidity
Supports Hotplug operation per the Serial ATA Revision 2.5 specification	Yes

*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.

DiamondMax 21 Serial ATA Product Manual, Rev. C 7