nanog mailing list archives
Re: Famous operational issues
From: Justin Streiner <streinerj () gmail com>
Date: Tue, 23 Feb 2021 16:40:33 -0500
On Thu, Feb 18, 2021 at 5:38 PM Warren Kumari <warren () kumari net> wrote:
2: A somewhat similar thing would happen with the Ascend TNT Max, which had side-to-side airflow. These were dial termination boxes, and so people would install racks and racks of them. The first one would draw in cool air on the left, heat it up and ship it out the right. The next one over would draw in warm air on the left, heat it up further, and ship it out the right... Somewhere there is a fairly famous photo of a rack of TNT Maxes, with the final one literally on fire, and still passing packets.
We had several racks of TNTs at the peak of our dial POP phase, and I believe we ended up designing baffles for the sides of those racks to pull in cool air from the front of the rack to the left side of the chassis and exhaust it out the back from the right side. It wasn't perfect, but it did the job. The TNTs with channelized T3 interfaces were a great way to terminate lots of modems in a reasonable amount of rack space with minimal cabling. Thank you jms
Current thread:
- Re: Famous operational issues, (continued)
- Re: Famous operational issues Suresh Ramasubramanian (Feb 18)
- Re: Famous operational issues Sabri Berisha (Feb 19)
- Re: Famous operational issues Suresh Ramasubramanian (Feb 19)
- Re: Famous operational issues Mark Tinka (Feb 19)
- Re: Famous operational issues Jen Linkova (Feb 19)
- Re: Famous operational issues Andrey Kostin (Feb 19)
- Re: Famous operational issues Owen DeLong (Feb 22)
- Re: Famous operational issues tim () pelican org (Feb 22)
- Re: Famous operational issues Warren Kumari (Feb 22)
- Re: Famous operational issues Patrick W. Gilmore (Feb 22)
- Re: Famous operational issues Justin Streiner (Feb 23)
- Re: Famous operational issues Seth Mattinen (Feb 18)
- Re: Famous operational issues Erik Sundberg (Feb 18)
- Re: Famous operational issues tim () pelican org (Feb 18)
- Re: Famous operational issues Alain Hebert (Feb 18)
- Re: Famous operational issues Eric Kuhnke (Feb 20)
- Re: Famous operational issues Jörg Kost (Feb 20)
- Re: Famous operational issues Henry Yen (Feb 18)
- Re: Famous operational issues bzs (Feb 18)
- Re: Famous operational issues Owen DeLong (Feb 19)