Seagate Surveillance HDD Product Manual, Rev. H
14
www.seagate.com
Drive Specifications
2.11 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
Table 5
.
2.12 MTBF and Warranty
The product will achieve an Mean Time Between Failure (MTBF) of 1,000,000 hours when operated in an environment of ambient air
temperatures of 25°C. Operation at temperatures outside the specifications shown in Section 2.9, "Environmental specifications." may
decrease the product MTBF. MTBF is a population statistics that is not relevant to individual units.
MTBF specifications are based on the following assumptions for Surveillance environments:
• 8760 power-on-hours per year
• 10,000 average motor start/stop cycles per year
• Operations at nominal voltages
• Temperatures outside the specifications in Environmental specifications on page 12 may reduce the product reliability.
• Normal I/O duty cycle for Surveillance environments. Operation at excessive I/O duty cycle may degrade product reliability.
The Surveillance environment of power-on-hours, temperature, and I/O duty cycle affect the product MTBF. The MTBF will be degraded
if used in an enterprise application.
2.12.1
Storage
Maximum storage periods are 180 days within original unopened Seagate shipping package or 60 days unpackaged within the defined
non-operating limits (refer to environmental section in this manual). Storage can be extended to 1 year packaged or unpackaged under
optimal environmental conditions (25°C, <40% relative humidity non-condensing, and non-corrosive environment). During any storage
period the drive non-operational temperature, humidity, wet bulb, atmospheric conditions, shock, vibration, magnetic and electrical
field specifications should be followed.
Table 5
Radio frequency environments
Test
Description
Performance
level
Reference
standard
Electrostatic discharge
Contact, HCP, VCP: ± 4 kV; Air: ± 8 kV
B
EN61000-4-2: 95
Radiated RF immunity
80MHz to 1,000MHz, 3 V/m,
80% AM with 1kHz sine
900MHz, 3 V/m, 50% pulse modulation @ 200Hz
A
EN61000-4-3: 96
ENV50204: 95
Electrical fast transient
± 1 kV on AC mains, ± 0.5 kV on external I/O
B
EN61000-4-4: 95
Surge immunity
± 1 kV differential, ± 2 kV common,
AC mains
B
EN61000-4-5: 95
Conducted RF immunity
150kHz to 80MHz, 3 Vrms, 80% AM with 1kHz sine
A
EN61000-4-6: 97
Voltage dips, interrupts
0% open, 5 seconds
0% short, 5 seconds
40%, 0.10 seconds
70%, 0.01 seconds
C
C
C
B
EN61000-4-11: 94
