IHSE USA 480c Series Draco tera compact - Manual (Page 186)

Draco tera
186
2013-08-14
7.9 MTBF
The following table contains the mean time between failure (MTBF) in
power-on hours (POH). The estimate is based on the FIT rates of the
parts included. FIT rates are based on normalized environmental
conditions of T = 60°C and activation energy (E
a
) of 0.7 eV. Calculations
are based on 90% confidence limit.
We estimate that inside the housing, temperature will be 15°C higher than
the ambient temperature. Therefore, the MTBF calculation refers to an
ambient temperature of 45°C. The humidity is limited to 60%.
Matrix Chassis Per Fan Per PSU
Draco tera 80C 90,690 280,000 238,800
Draco tera 48C32F 87,250 280,000 238,800
Draco tera 64C 97,300 280,000 238,800
Draco tera 48C16F 95,600 280,000 238,800
Draco tera 48C 140,000 280,000 295,700
Draco tera 32C 165,300 280,000 295,700
Draco tera 16C 208,322 280,000 295,700
Draco tera 8C / 8F 684,700 280,000 309,700
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