Seagate ST920814AM manual Electromagnetic immunity, Reliability, Measurement type Specification

2.13Electromagnetic immunity

When properly installed in a representative host system, the drive operates without errors or degradation in performance when subjected to the rradio frequency (RF) environments defined in the following table:

Test	Description	Performance	Reference
		level	standard
Electrostatic discharge	Contact, HCP, VCP: ± 4 kV; Air: ± 8 kV	B	EN 61000-4-2: 95
Radiated RF immunity	80 to 2,000 MHz, 10 V/m,	A	EN 61000-4-3: 96
	80% AM with 1 kHz sine
	900 MHz, 3 V/m, 50% pulse modulation @ 200 Hz		ENV 50204: 95
Electrical fast transient	± 1 kV on AC mains, ± 0.5 kV on external I/O	B	EN 61000-4-4: 95
Surge immunity	± 1 kV differential, ± 2 kV common, AC mains	B	EN 61000-4-5: 95
Conducted RF immunity	150 kHz to 80 MHz, 3 Vrms, 80% AM with 1 kHz	A	EN 61000-4-6: 97
	sine
Power Frequency H-field	1 A/m, 50Hz/60Hz, 3 axes	A	EN 61000-4-8: 97
immunity
Voltage dips, interrupts	30% Reduction for 25 cycles	C	EN 61000-4-11: 94
	>95% Reduction for 250 cycles	C
	>95%, 0.5 cycles	B

A - 1) No upset or degradation in performance beyond manufacturer’s specified limits. 2) No data loss.

B - 1) Unit self recovers without user intervention. 2) No data loss.

C - 1) Upset OK provided that unit will function after user intervention.

2.14	Reliability
Measurement type		Specification
Nonrecoverable read errors		1 per 1014 bits read, max.
Mean time between failures		550,000 power-on hours
(MTBF)		At 8,760 POH (Power On Hours) per year
		Max case temperature: 70°C at the case measurement location shown in Figure 4.
Load/Unload (U/UL)
25°C, 50% relative humidity		600,000 software-controlled power on/off cycles
		30,000 hard power on/off cycles
32°C, 80% relative humidity		600,000 software-controlled power on/off cycles
5°C, 80% relative humidity		30,000 hard power on/off cycles
5°C, 10% relative humidity
60°C, 20% relative humidity
Service Life		10 years, form, fit, and function replacement
Warranty		1 year standard (up to 5 years with additional warranty purchase).
		To determine the warranty for a specific drive, use a web browser to access the fol-
		lowing web page:
		www.seagate.com/support/service/
		From this page, click on the “Verify Your Warranty” link. You will be asked to pro-
		vide the drive serial number, model number (or part number) and country of pur-
		chase. The system will display the warranty information for your drive.

EE25 Series Product Manual, Rev. E 17