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From Andrija Panic <>
Subject Physical network design options - which crime to comit
Date Fri, 26 Dec 2014 15:05:49 GMT
Hi folks,

I'm designing some stuff - and wondering which crime to commit - I have 2
posible scenarios in my head
I have folowing NICs available on compute nodes:
1 x 1G NIC
2 x 10G NIC

I was wondering which approach would be better, as I', thinking about 2
possible sollutions at the moment, maybe 3.

*First scenario:*

1G = mgmt network (only mgmt)
10G = Primary and Secondary storage traffic
10G = Guest and Public traffic

*Second scenario*

1G = not used at all
10G = mgmt,primary,secondary storage
10G = Guest and Public

And possibly a 3rd scenario:

1G = not used at all
10G = mgmt+primary storage
10G = secondary storage, guest,public network

I could continue here with different scenarios - but I'm wondering if 1G
dedicated for mgmt would make sense - I know it is "better" to have it
dedicated if possible, but folowing "KISS" and knowing it's extremely light
weight traffic - I was thinkin puting everything on 2 x 10G interfaces.

Any opinions are most welcome.


Andrija Panić

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