[Info-vax] eva and switch zoning

[Forster, Michael]

Do you set command delay? What do you mean by 30 minute Cache freeze - does this mean it takes Cache 30 minutes to freeze after you issue request and before you issue snap requests? Or total freeze, snap, thaw, verify completion?

I've supported and advised best practices across many Cache sites across USA. I don't recognize your name except for info VAX. 

Michael Forster
________________________________________
From: Info-vax [info-vax-bounces at rbnsn.com] on behalf of pcoviello at gmail.com [pcoviello at gmail.com]
Sent: Friday, October 05, 2012 3:12 PM
To: info-vax at rbnsn.com
Subject: Re: [Info-vax] eva and switch zoning

On Wednesday, October 3, 2012 10:18:05 AM UTC-4, Stephen Hoffman wrote:
> On 2012-10-03 14:06:18 +0000, pcoviello at gmail.com said:
>
>
>
> > Hi, I found out that my brocade 4gb switches are not zoned for my
>
> > eva6400 in production, I only have 2 vms systems attached to it, so a
>
> > is it necessary and b would it help performance?  and if I should have
>
> > them zoned what does it entail? do I lose anything.
>
>
>
> With two OpenVMS boxes on one fibre channel switch and assuming there
>
> are no plans to toss other random additional gear onto the same switch
>
> and the same SAN, zoning is irrelevent.
>
>
>
> If you have just VMS boxes and that EVA, then you're using your SAN
>
> like a CI.  As a private storage connection.
>
>
>
> As for why fibre channel configurations are zoned, see
>
> <http://en.wikipedia.org/wiki/Fibre_Channel_zoning>,
>
> <www.enterprisenetworkingplanet.com/netsp/article.php/3695836> and
>
> other applicable resources available via your preferred web search
>
> engine.
>
>
>
> In general, zoning gets way more interesting as you toss more and more
>
> and different and disparate gear onto the switch, and it helps keep
>
> different environments from seeing or stomping on each other.
>
>
>
>
>
>
>
> --
>
> Pure Personal Opinion | HoffmanLabs LLC

I don't disagree, we have no plans in place to put anything else on these switches, but HP's position is it is our recommendation and that we should also change parameters for vms that may not exist. no one can verify them!
so I have a 30 minute cache freeze when I do my snapclones and the copy command is the right way.

and by zoning it will/might improve performance

sorry I'm not buying it..

thanks for your input
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