Re: Why 4 Procs

  • From: C Drawers <cdrawers@xxxxxxxxx>
  • To: "\[ExchangeList\]" <exchangelist@xxxxxxxxxxxxx>
  • Date: Thu, 27 Jan 2005 16:12:39 -0800 (PST)

Thanks for the input Al.  

Let me ask for more focussed feedback.  

Ignore the disk issue.  I'm not asking about that. 
I'm talking about Mailbox/PF server functions on one
box.  
FE functions are handled separately.  

By strictly comparing, 4 proc vs. 2 proc (and whatever
Bus stuff might come with that or other things that
I'm not familiar with).  Why should I spend 4 times as
much for a 4 way box over a 2 way box?  



--- "Mulnick, Al" <Al.Mulnick@xxxxxxxxxx> wrote:

> http://www.MSExchange.org/
> 
> Hmm... I was with that up until the last line about
> affording it and all.  
> 
> That's fine for some orgs, but by and large it's
> best to properly size the
> servers for the task at hand and the expected
> lifecycle. 
> 
> One question that comes to mind is what is the
> planned user-density for
> these servers?  If less than 1500 medium-heavy, I'm
> not sure I'd be too
> concerned depending on the other apps.  If you want
> to scale beyond, it's
> best to do the homework though.
> 
> Some servers don't need as much processing power as
> others.  For example, FE
> servers don't typically, although in some situations
> they can benefit from
> 4-way machines. Public Folder servers rarely need 4
> way but it does happen.
> 
> When you read that link below, pay close attention
> to the thoughts on faster
> front-side bus speeds. That's there for a reason.
> 
> If you do want to scale a machine, I highly suggest
> you pay very close
> attention to the disk layout/speeds as well as the
> DR/BC planning prior to
> settling on anything.  Backplanes aren't equal
> either, but it would take
> quite a bit to get to that level of saturation.
> 
> My $0.04 anyway.
> 
> If you're interested, there's a troubleshooting
> performance doc on
> Microsoft's site. 
> http://www.microsoft.com/exchange/library
> 
> Al
>  
> 
> -----Original Message-----
> From: Danny [mailto:nocmonkey@xxxxxxxxx] 
> Sent: Thursday, January 27, 2005 4:25 PM
> To: [ExchangeList]
> Subject: [exchangelist] Re: Why 4 Procs
> 
> http://www.MSExchange.org/
> 
> On Thu, 27 Jan 2005 12:45:45 -0800 (PST), C Drawers
> <cdrawers@xxxxxxxxx>
> wrote:
> > 4 Processor servers seem to always been chosen for
> mailbox servers.  
> > Since a comparable equipped 2 processor server is
> often 1/4 the cost 
> > and it seems the latest 2 proc box has equivilant
> ghz power as a 4 
> > proc box, it sure seems like 2 proc boxes are the
> way to go.
> 
> [...] 
> 
> Not sure if this is of any help: 
> 
>
http://support.microsoft.com/default.aspx?scid=kb;en-us;827281
> 
> > Any crazy theories or even better... concrete
> theories with data to 
> > suppor the theory?
> 
> Here's one: if you can afford it, the more the
> better! :D
> 
> ...D
> 
>
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