I know first hand how cabling can fail. When I first got into this arena I was taught by the person I was hired to replace how to do patch cords. Now I didn't know any better and continued his mistakes until a more qualified person explained the proper way. At that point I started purchasing cables or having wiring contracted out where possible. As the years have gone on (here now 12+ years) I find my early work had to be replaced or I get a call from a school with problems and I say replace the patch cord and bingo things work. So I don't even trust my work when it comes to cabling. Also I have seen how poorly created cables in a not so climate controlled environment fail over time.
I am a firm believer that something will fail at the precise moment you don't want anything to fail. Like at 4 PM on the day before you are heading out for vacation or 5 minutes before you enter airport security for a long trip. John J. Boris, Sr. JEN-A-SyS Administrator Archdiocese of Philadelphia "Remember! That light at the end of the tunnel Just might be the headlight of an oncoming train!" >>> Andrew Hume <[email protected]> 11/30/2010 12:32 PM >>> On Nov 29, 2010, at 2:56 PM, Dan Foster wrote: > Hot Diggety! Luke S Crawford was rumored to have written: >> >> Now, for the reasons other people on the list have stated, I do >> prefer >> fiber for long runs, or through electrically uncertain areas, but my >> personal experience? copper usually wins in terms of reliability, >> for >> the two above reasons. > > That reliability can certainly be undone by, well, less familiar > people. ;-) > > David Nolan was rumored to have written: >> Cabling typically doesn't just fail spontaneously... ha!! all bets are off when cable are not properly or adequately dressed. then you can have all sorts of effects, transient and systemic (like only failing when the rack door is closed). also, for RJ connectors, sometime the little tabs break off or don't engage; these too are problems waiting to happen. i have found that in environments where cabling is done poorly, cable failures are our second biggest failure cause (after disk). ------------------ Andrew Hume (best -> Telework) +1 623-551-2845 [email protected] (Work) +1 none currently AT&T Labs - Research; member of USENIX and LOPSA _______________________________________________ Tech mailing list [email protected] https://lists.lopsa.org/cgi-bin/mailman/listinfo/tech This list provided by the League of Professional System Administrators http://lopsa.org/
