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RE: [ActiveDir] Stress testing and performance analysis of domain controllers

Ayers, Diane
Mon, 06 Dec 2004 11:52:02 -0800

Wouldn't this be dependent on the volume of changes that you see in your
environment?  With Exchange and its accompanying volume of changes,
moving the log files to separate spindles is as you say, a no
no-brainer.  However in our AD environment, we see very low volume of
changes. We get maybe 50 MB of log files a day at most..  

Our server design for our Win2K AD deployment was to design a DC like an
Exchange server with oddles of disks and separate spindle sets for the
OS, DB and logs but we found that this layout was a major overkill. For
our Win2K3 upgrades to our domain controllers, we are using less dsiks
and combining the OS and log spindles.  We are still beefing up the
memory and processors which in our environment seem to be the most
critical components.  Our DIT is ~1 GB.

Diane

-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Gil Kirkpatrick
Sent: Monday, December 06, 2004 10:21 AM
To: [EMAIL PROTECTED]
Subject: RE: [ActiveDir] Stress testing and performance analysis of
domain controllers

Definitely, putting DIT and logs on separate spindles is a no-brainer
and guaranteed to improve things.

Gil "I agree with everything Al has ever said" Kirkpatrick CTO, NetPro

-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Mulnick, Al
Sent: Monday, December 06, 2004 10:54 AM
To: [EMAIL PROTECTED]
Subject: RE: [ActiveDir] Stress testing and performance analysis of
domain controllers

I think you can get what you want using the below tool in conjunction
with
http://www.microsoft.com/downloads/details.aspx?FamilyID=4814fe3f-92ce-4
871-
b8a4-99f98b3f4338&DisplayLang=en

Using the /3gb switch is often recommended, but your biggest benefit
will likely come from the disk layout.  If you can get both, that's
great, but the disk would be the one to really fight for if something
has to give.

That said, it's rumored that 64bit Windows does a nice job as well.  I
couldn't speak that however.  

Al 

-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of John Singler
Sent: Monday, December 06, 2004 12:04 PM
To: [EMAIL PROTECTED]
Subject: Re: [ActiveDir] Stress testing and performance analysis of
domain controllers

maybe the Server Performance Advisor? :

http://www.microsoft.com/downloads/details.aspx?FamilyID=61a41d78-e4aa-4
7b9-
901b-cf85da075a73&displaylang=en

or

http://tinyurl.com/46wd3

hth,

john

Ruston, Neil wrote:
> 
> 
> As part of a more general AD design refresh, I am re-visiting the DC 
> hardware and OS configuration.
> 
> I am proposing several changes to the DC spec, including the adoption 
> of the following:
> 
>     * Use 4Gb RAM
>     * Use /3gb switch
>     * Place AD logs and database on separate disk spindles
> 
> In order to 'sell' this idea, I would like to demonstrate the 
> effective increase in 'horse power' that the above offers. I am 
> therefore looking for a tool which can help me to show that a DC with 
> config A can handle load x whilst DC spec B can handle load y.
> 
> Ideally, this tool will act much like loadsim and simulate a load on 
> the DC so as to identify the maximum load that each config is capable 
> of handling.
> 
> Is there such a tool available on the market?
> 
> Thanks in advance,
> Neil
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