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- Path: 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
-
- 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.
-