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Article #224

Re: AGS fan noise

#224
From: Charles Hedrick
Date: Tue, 18 Aug 1992 07:41
18 lines
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eckert@immd4.informatik.uni-erlangen.de (Toerless Eckert) writes:

>When i was testing routers and had multiple of them in my office i
>noticed Cisco routers to be the loudest of them all, due to this
>enormous noise their fans produce. I actually had to switch them off
>each time i wanted to phone. I still don't know where cisco buys these
>buzzers. Maybe these are remainders from scrap aircraft turbojet engines.
>Incredible.

Much of the early design work at Cisco was done by the same person who
did a lot of the design work on the KL-10 (which became the
DECSYSTEM-20).  A representative of DEC was asked the same question
about the KL-10 at a meeting of DECUS (the DEC Users' Society): Why is
the KL-10 so noisy?  His response was: "You're got to realize that the
KL-10 cabinet was originally designed as a hovercraft."  I believe the
AGS+ continues the same technology: It was intended for use in
situations where it is not practical to use a rack -- just face the
fans down and let it hang in the air.
Technical Details
Message-ID: <Aug.18.03.41.42.1992.28562@aramis.rutgers.edu>
Path: arc1-ca.pugleaf.net!sparky!uunet!cis.ohio-state.edu!rutgers!igor.rutgers.edu!aramis.rutgers.edu!hedrick
References: <920816195848.35a004bc@DIR.TEXAS.GOV> <Bt5u5o.JK5@immd4.informatik.uni-erlangen.de>

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Path: arc1-ca.pugleaf.net!sparky!uunet!cis.ohio-state.edu!rutgers!igor.rutgers.edu!aramis.rutgers.edu!hedrick
From: hedrick@aramis.rutgers.edu (Charles Hedrick)
Newsgroups: comp.dcom.sys.cisco
Subject: Re: AGS fan noise
Message-ID: <Aug.18.03.41.42.1992.28562@aramis.rutgers.edu>
Date: 18 Aug 92 07:41:42 GMT
References: <920816195848.35a004bc@DIR.TEXAS.GOV> <Bt5u5o.JK5@immd4.informatik.uni-erlangen.de>
Organization: Rutgers Univ., New Brunswick, N.J.
Lines: 18