Question

Noice from Extreme switches

  • 27 May 2019
  • 1 reply
  • 247 views

Hi
White paper on Summit X460-G2-48p-10GE4 gives max 64.3-70.8dB(A) in noice depending on F/B or B/F fan. How can I calculate the total noice in a stack of 4 switches ?
Can't find any noice data in tech spec for VSP7400 switches

Any info will be very appreciated

1 reply

Userlevel 2
For noise, if you have 4 noise sources of equal volume (db level) the total noise volume is +6dB. so f you have 4 sources of 50dB, then the total volume is 56dB.
if you have noise sources of unequal volumes then you need logarithmic addition.
dB=10 * Log10 (10^(N1/10)+10^(N2/10)+...+10^(Nx/10))

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