nanog mailing list archives
Re: Cable Colors
From: "Jay R. Ashworth" <jra () baylink com>
Date: Tue, 17 Jun 2008 00:31:36 -0400
On Mon, Jun 16, 2008 at 11:27:43PM -0500, Joe Greco wrote: [ quoting me ]
but doesn't *anyone* put service loops in anything anymore?Assuming you're using "service loops" in the sense of allowing enough cable to allow a server to slide out while running... usually in copper building wiring, the term loosely refers to excess cable or whathaveyou stuffed back into the conduit/cavity/box to allow for the fixture to be pulled out and worked on. When you've got a dense rack (think something like 30 1U servers, with a minimum of 4 x Cat5/6/etc to each one), "service loops" are a great way to significantly reduce your airflow. Think about how far you have to pull a server out... is anything significantly less than 30" deep these days? That means a lot of wire to store. When it isn't mission critical that downtime be minimized to the second, it changes the perspective on whether or not you need to be able to pull equipment while having it still running.
True. And I'm Mr Just Unplug It For A Second To Move The Cable, too.
Each situation will have tradeoffs. Pick appropriately, as always.
Excellent reminder. Cheers, -- jra -- Jay R. Ashworth jra () baylink com Designer +-Internetworking------+---------+ RFC 2100 Ashworth & Associates | Best Practices Wiki | | '87 e24 St Petersburg FL USA +-http://bestpractices.wikia.com-+ +1 727 647 1274 If you can read this... thank a system administrator. Or two. --me
Current thread:
- Re: Cable Colors, (continued)
- Re: Cable Colors Pete Templin (Jun 16)
- Re: Cable Colors Mark Foster (Jun 16)
- Re: Cable Colors Joe Greco (Jun 16)
- Re: Cable Colors Jay R. Ashworth (Jun 16)
- Re: Cable Colors - A Standard George Imburgia (Jun 16)
- Re: Cable Colors - A Standard JoeSox (Jun 17)
- Re: Cable Colors - A Standard Glen Turner (Jun 19)
- Re: Cable Colors - A Standard Nathan Ward (Jun 19)
- Re: Cable Colors - A Standard Tim Jackson (Jun 19)
- Re: Cable Colors Joe Greco (Jun 16)
- Re: Cable Colors Jay R. Ashworth (Jun 16)
- RE: Cable Colors Blake Pfankuch (Jun 17)
- Re: Cable Colors Christian Koch (Jun 16)
- Re: Cable Colors Michael Smith (Jun 16)
- Re: Cable Colors Owen DeLong (Jun 16)