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2.9
Electromagnetic immunity
When properly installed in a representative host system, the drive operates without errors or degradation in
performance when subjected to the radio frequency (RF) environments defined in the following table:
Table 5 Radio frequency environments
Test
Electrostatic discharge
Radiated RF immunity
Electrical fast transient
Surge immunity
Conducted RF immunity
Voltage dips, interrupts
2.10
Reliability
2.10.1
Annualized Failure Rate (AFR) and Mean Time Between Failures (MTBF)
The production disk drive shall achieve an annualized failure-rate of 0.44% (MTBF of 1,500,000 hours) over a 5 year
service life when used in Enterprise Storage field conditions as limited by the following:
8760 power-on hours per year.
HDA temperature as reported by the drive <= 30°C
Ambient wet bulb temp <= 26°C
Typical workload
The AFR (MTBF) is a population statistic not relevant to individual units
ANSI/ISA S71.04-2013 G2 classification levels and dust contamination to ISO 14644-1 Class 8 standards (as
measured at the device)
The MTBF specification for the drive assumes the operating environment is designed to maintain nominal drive
temperature and humidity. Occasional excursions in operating conditions between the rated MTBF conditions and
the maximum drive operating conditions may occur without significant impact to the rated MTBF. However continual
or sustained operation beyond the rated MTBF conditions will degrade the drive MTBF and reduce product reliability.
Seagate SkyHawk AI Serial ATA Product Manual, Rev. C
Description
Contact, HCP, VCP: ± 4 kV; Air: ± 8 kV
80 to 1000 MHz, 3 V/m,
80% AM with 1 kHz sine
900 MHz, 3 V/m, 50% pulse modulation @ 200 Hz
± 1 kV on AC mains, ± 0.5 kV on external I/O
± 1 kV differential, ± 2 kV common, AC mains
150 kHz to 80 MHz, 3 Vrms, 80% AM with 1 kHz sine
0% open, 5 seconds
0% short, 5 seconds
40%, 0.10 seconds
70%, 0.01 seconds
Performance level
Reference standard
B
EN 61000-4-2: 95
A
EN 61000-4-3: 96
ENV 50204: 95
B
EN 61000-4-4: 95
B
EN 61000-4-5: 95
A
EN 61000-4-6: 97
C
EN 61000-4-11: 94
C
C
B
Drive specifications
17
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