LAN and Telecom Cabling Long patch cables vs. patch panel

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Subject Author Date
Long patch cables vs. patch panel Jamie 08-18-04
Posted by Jamie on August 18, 2004, 9:21 pm
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Hello,
I have two rows of servers and fiber must come from one row to another
row to connect to the core switch. Does anyone know if the standards
dictate wheather I should use 35' patch cables to connect accross rows
or use a patch panel and short patch cables? I think using a patch
panel is much cleaner and easier to maintain then long patch cables.
Thanks,
Jamie
Please reply to jfigursky@hotmail.com


Posted by Dmitri(Cabling-Design.com on August 19, 2004, 6:44 am
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If this would have been copper, I would just say "of course short cords
with patch panel-to-patch panel tie cables are so much easier to manage".
However, fiber patch panels are rather big deal of money/time/effort to
install, and it may not be feasible for you. I have never seen people
doing 35' fiber tie cables though they do it with CAT5E/CAT6 all the time
in larger data centers.

Anyways, if you go with long fiber patch cords, make sure you have enough
cable managers (both horizontal and vertical) to store excess lengths:
there is a considerable difference in distances between different ports on
the same panel, so you need to be able to dress it in somewhere. Otherwise
after 5-10 patch cord re-connections it will just become unmanageable
tangled web of cords.


--
Dmitri Abaimov, RCDD
http://www.cabling-design.com
Cabling Forum, color codes, pinouts and other useful resources for
premises cabling users and pros
http://www.cabling-design.com/homecabling
Residential Cabling Guide
-------------------------------------
Jamie wrote:




> Hello,
> I have two rows of servers and fiber must come from one row to another
> row to connect to the core switch. Does anyone know if the standards
> dictate wheather I should use 35' patch cables to connect accross rows
> or use a patch panel and short patch cables? I think using a patch
> panel is much cleaner and easier to maintain then long patch cables.
> Thanks,
> Jamie
> Please reply to jfigursky@hotmail.com








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Posted by Manfred Kwiatkowski on August 20, 2004, 11:55 am
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info_at_cabling-design_dot_com@foo.com (Dmitri(Cabling-Design.com)) writes:
>If this would have been copper, I would just say "of course short cords
>with patch panel-to-patch panel tie cables are so much easier to manage".
>However, fiber patch panels are rather big deal of money/time/effort to
>install, and it may not be feasible for you. I have never seen people
>doing 35' fiber tie cables though they do it with CAT5E/CAT6 all the time
>in larger data centers.

Why not use pre-fabicated cable with 12 or 24 strands of fiber
ending in ST or SC and snap it into a simple patch panel with
the appropriate couplings? This is not that expensive, takes little
time and needs less skills than doing a proper CAT5/6 panel.

--
Manfred Kwiatkowski kwiatkowski@zrz.tu-berlin.de


Posted by Justin T. Clausen on August 20, 2004, 11:51 am
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kwia4000@bronto.zrz.TU-Berlin.DE (Manfred Kwiatkowski) wrote in message
> info_at_cabling-design_dot_com@foo.com (Dmitri(Cabling-Design.com)) writes:
> >If this would have been copper, I would just say "of course short cords
> >with patch panel-to-patch panel tie cables are so much easier to manage".
> >However, fiber patch panels are rather big deal of money/time/effort to
> >install, and it may not be feasible for you. I have never seen people
> >doing 35' fiber tie cables though they do it with CAT5E/CAT6 all the time
> >in larger data centers.
>
> Why not use pre-fabicated cable with 12 or 24 strands of fiber
> ending in ST or SC and snap it into a simple patch panel with
> the appropriate couplings? This is not that expensive, takes little
> time and needs less skills than doing a proper CAT5/6 panel.

Another option is the pre-connectorized MPO cables. I've considered
them for our data center when it gets remodeled soon. It reduces the
time/effort thing for internal fiber patching. Haven't done a
complete cost study yet, so I don't know how they come out cost wise.


Posted by Jamie on September 5, 2004, 3:59 pm
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Thanks for the ALL the info.

The MPO option is something that I haven't heard before. It sounds
interesting and I'm trying to find general info on it but it doesn't
seem to be too common. If I'm interpretting it's use correctly, you
buy an MPO cable that is pre-terminated on both ends then plug both
sides into a patch panel. This would provide exactly what I'm after
and avoid the cost of terminating fiber. Hopefully the cost of it
isn't too excessive. I will definately check into it.


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