[c-nsp] 10Gb for VSAN

[Doug McIntyre]

You don't want to "cheap out" on VSAN. It is designed to work with a
highly specific set of enterprise/datacenter grade hardware. Do not
venture off the HCL or the design guides at all. If you do, you are in
for a world of hurt. If you are considering doing things not on the
HCL of off the given designs, I would suggest not bothering with VSAN
and go with a different solution. It is not a cheap solution.

Nexus switches are quite suitable. (NB: Nexus is just any of Cisco's
Datacenter switches now-a-days). Catalyst is for Enterprise/midsized office.
The Nexus 9300 series switches would work just fine in my experience as well.



On Wed, Jul 25, 2018 at 01:39:47PM +0000, Nick Cutting wrote:
> Nexus 93xx are also suitable for this task. We have tested VSAN on these.
> They talk about buffers in the VSAN Docs?
> 
> -----Original Message-----
> From: cisco-nsp <cisco-nsp-bounces at puck.nether.net> On Behalf Of Tom Hill
> Sent: Tuesday, July 24, 2018 8:20 PM
> To: cisco-nsp at puck.nether.net
> Subject: Re: [c-nsp] 10Gb for VSAN
> 
> This message originates from outside of your organisation.
> 
> On 24/07/18 23:02, Michael Malitsky wrote:
> > I have a Cat 4506 (Sup7L-E) serving a medium-sized business.  We are 
> > looking to overhaul the server side and add VSAN on 4-5 hosts, for 
> > which we'll need a handful (8-10) 10Gb ports.  I see the only option 
> > for the 4506 chassis is the 4712-SFP module, and the combination seems 
> > underwhelming, even before I look up the pricing. As I understand it, 
> > the TOR option from Cisco would be a Nexus, which seems overkill for 
> > the application?
> 
> There are suitably-reliable 20-port Nexus 5010s you can pick-up for peanuts. I don't believe you can still get support, but maybe you can get the latest software via PSIRT.
> 
> Lots of noise made and power utilised with those, so someone with more money would obviously punt you towards the [actually white-box] N3k line for Cisco hardware that does the same thing "in support".
> 
> Certainly, that Cat 4500 wasn't made for it with a 48Gbit/sec backplane.
> Amazingly, the Cat 4500-X seems to have better density, as well as being from the same gen of supervisor.
> 
> 
> > For those who have invented this wheel already, please share the 
> > wisdom. For now, I am seriously considering putting in a 10Gb Ubiquity 
> > switch...
> 
> If that's all you need to do this 'VSAN' thing, then why not. See-also:
> 
>  Cisco 3650/3850
>  Cisco 4500-X
>  Extreme X620/X670/X690
>  Various Quantas, EdgeCores, Mellanox, ad infinitum.
>  Netgear? lol
> 
> Have fun!
> 
> --
> Tom
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