nanog mailing list archives
Re: What is the limit? (was RE: multi-homing fixes)
From: Vadim Antonov <avg () exigengroup com>
Date: Thu, 30 Aug 2001 21:34:43 -0700 (PDT)
On Thu, 30 Aug 2001, Larry Sheldon wrote:
I have been trying to avoid saying this, but this is just nonsense with a little srinkle of "doesn't matter" here and there.
You're not the first to tell that i'm talking nonsense; but i had both experience with a water-cooled computer (not something i wish to repeat), _and_ designing hardware for COs (heck, the first computer i laid my hands on was using thyratrones (sp?) for triggers, and quite a few relays).
Actually, talking about water/electricity interaction in refrigerators, lab equipment, etc, misses the very simple point - a probability of a leak is proportional (as a good approximation :) to the number of moveable components (PCBs, connectors, etc) in the system. In a typical CO it's tens or hundreds of thousands.I don't remember seeing anybody talking about lab equipment and refrigerators here.
Archives are at www.nanog.org.
We (some of us) were talking about liquid-cooled electronics, some of them were talking about actual experience--mine with water-cooled CPU's.
Not everything which works in one-of-a-kind supercomputers is workable in your average central office. People who build equipment which has to work for years w/o interruptions, survive quakes, power faliures and thick-fingered technicans are not idiots; and if water cooling was a real solution for CO environmental control woes, they'd use it. In an average CO a poodle on a floor has a risk of not being noticed for a couple of months. It doesn't have an alarm relay, you see? (Have you ever seen a blast of H2/O2 mix resulting from electrolysis? No?) --vadim
Current thread:
- Re: What is the limit? (was RE: multi-homing fixes), (continued)
- Message not available
- Re: What is the limit? (was RE: multi-homing fixes) Joe Loiacono (Aug 30)
- Re: What is the limit? (was RE: multi-homing fixes) Christian Nielsen (Aug 30)
- Re: What is the limit? (was RE: multi-homing fixes) Joel Jaeggli (Aug 30)
- RE: What is the limit? (was RE: multi-homing fixes) M. David Leonard (Aug 30)
- RE: What is the limit? (was RE: multi-homing fixes) Vadim Antonov (Aug 30)
- Re: What is the limit? (was RE: multi-homing fixes) David Howe (Aug 31)
- Re: What is the limit? (was RE: multi-homing fixes) Vadim Antonov (Aug 30)
- Re: What is the limit? (was RE: multi-homing fixes) Jim Popovitch (Aug 30)
- Re: What is the limit? (was RE: multi-homing fixes) Valdis . Kletnieks (Aug 30)
- Re: What is the limit? (was RE: multi-homing fixes) Stephen Kowalchuk (Aug 31)
- Re: What is the limit? (was RE: multi-homing fixes) Leo Bicknell (Aug 31)
- Re: What is the limit? (was RE: multi-homing fixes) Valdis . Kletnieks (Aug 31)