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Re: NANOGers home data centers - What's in your closet?
From: Matthew Petach <mpetach () netflight com>
Date: Sun, 14 Aug 2011 19:07:49 -0700

On Sun, Aug 14, 2011 at 2:21 PM, Jake Khuon <khuon () neebu net> wrote:
On Sun, 2011-08-14 at 13:11 -0700, Leo Bicknell wrote:

So, there you go, a way to star 8 8-port switches off a central switch
with the remote switches needing no power.  This allows UPS'ing the
central switch only, while knowing they will all stay up.

In some cases, that's not always a great idea.  Consider the situation
whereby a remote "site" served by a remote switch has two or more
network devices that rely on another in a local fashion... such as in
the case of a NAS or SAN serving a local workgroup of machines.  If you
have to take down the central switch for whatever reason then you cut
power to the remote switch and all the associated end-station lose local
network connectivity as well.

Of course you can always resort to manually plugging in the remote
switches.  Can those GS108T-200 perform auto-cutover to AC power?  That
would be ideal.

Of course, if he had local AC power available, it would kinda defeat one of
the points of having PoE, which is to be able to put switches where there
isn't a convenient AC drop to begin with.  ^_^;


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