[c-nsp] Redundancy vs. Paranoia

[Ted Mittelstaedt]

> -----Original Message-----
> From: cisco-nsp-bounces at puck.nether.net
> [mailto:cisco-nsp-bounces at puck.nether.net]On Behalf Of Reuben Farrelly
> Sent: Sunday, May 15, 2005 1:31 PM
> To: Hank Nussbacher
> Cc: John Neiberger; cisco-nsp at puck.nether.net
> Subject: Re: [c-nsp] Redundancy vs. Paranoia
> 
> 
> As a field engineer, I have to disagree with (only) one point 
> Hank made.  We 
> replace blown power supplies on a fairly regular basis 
> (although the number of 
> units replaced is probably quite small compared to the number 
> of chassis' out 
> there), but the number of Sup's and PA's replaced due to 
> failure is tiny. 

And, unfortunately, I have to disagree with you and agree with Hank -
I'd gladly take dead power supplies instead of the dead PA-A3-T3
and the dead processing card I have here on my desk.  (both of
which were not under service when they failed)

Of course, all our routers are on UPSes which are on generator power-
expensive UPS'es that - which might account for why we also have never
had a dead power supply.

Ted