[c-nsp] 8 Racks of Servers and Growing; switch/layout recommendations

[Michael Balasko]

We are a pretty small enterprise(100 racks, ~300servers and lots of
Cisco gear) and we are "consolidated" end of row. That means we have
aggregated our switches in a few central racks and haul all of the
copper to each rack.

Our datacenter is extremely nice and we pride ourselves on how the place
is organized and how clean the cabling is kept. Thank being said if we
were greenfield we'd probably go true top of rack because of the cabling
densities in the racks are getting difficult to manage with EOR. We are
looking at up to 60 copper connections per rack and at least 24 FC
fiber. 

The EOR consolidation of copper is a massive chokepoint/headache and
we'd likely not do it again:) 

There are dozens of technical arguments either way, but our "issue" is
primarily cable density....

YMMV....  

Mike

-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Nick Hilliard
Sent: Wednesday, December 23, 2009 9:02 AM
To: Doug Warner
Cc: cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] 8 Racks of Servers and Growing;switch/layout
recommendations

On 23/12/2009 15:13, Doug Warner wrote:
> What's a good method for growing here?  Do people like top-of-rack for
> situations where we have a cage (all the racks are side-by-side), or
do you
> prefer end-of-row?

There was an interesting presentation at NANOG last June about the
various
top-of-rack models:

>
http://www.nanog.org/meetings/nanog46/abstracts.php?pt=MTQwOCZuYW5vZzQ2&
nm=nanog46

Nick
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