From: [EMAIL PROTECTED]
Reply-To: [email protected]
To: [email protected]
Subject: Re: [ActiveDir] Exchange now supported on virtual hardware
Date: Mon, 31 Oct 2005 08:21:24 -0500
I could see virtualizing low-end Exchange systems such as FEs and
Bridgehead servers as stated earlier. The higher end databases are the
ones that I have a problem with at this point in time, but I'm sure
that the technology will evolve to where this becomes possible for
higher end databases.
It would be best in all cases to test a virtualized and non-virtualized
option with production levels before proceding in a production environment.
Chuck Gafford
Systems Architect
Unisys
-----Original Message-----
From: [EMAIL PROTECTED]
To: [email protected]
Sent: Sun, 30 Oct 2005 09:25:09 -0800
Subject: RE: [ActiveDir] Exchange now supported on virtual hardware
Perhaps some day I'll have time to run JetStress on an clustered
Exchange
server on ESX attached to a SAN to see how it performs.
Which is a good thing to do before concluding that virtualizing
exchange is a "no-no". I'm jetstressing, and doing the old, trusted
loadsim (albeit without access to a SAN) and I can't see a diff in
performance. It's easy to based our conclusions on prior (bad)
experiences and start telling people not to virtualize exc. But, until
we can see any conclusive study of a performance lag, such advice is
technically unsound and indefensible. Virtualization has evolved.
Sincerely,
Dèjì Akómöláfé, MCSE+M MCSA+M MCT
Microsoft MVP - Directory Services
www.readymaids.com - we know IT
www.akomolafe.com
Do you now realize that Today is the Tomorrow you were worried about
Yesterday? -anon
________________________________
From: [EMAIL PROTECTED] on behalf of Presley, Steven
Sent: Sun 10/30/2005 8:51 AM
To: [email protected]
Subject: RE: [ActiveDir] Exchange now supported on virtual hardware
We are quite a large ESX shop (number of guest OS's are in the 1000's I
believe) and while I fought it for quite some time we have ended up
using ESX for our 5 front-end servers and our 3 bridgehead servers.
Most ESX guest OS's don't require much tweaking, but Exchange certainly
does (at least the bridgehead servers). Once we got the settings right
for the bridgehead servers they fly like any other piece of hardware
(the FE's didn't really require much tweaking). We have roughly 4,000
POP3\IMAP users, an average of 6k-7k of unique logons into OWA weekly,
and roughly 800,000 messages going through the bridgehead servers daily.
Virtualization of Exchange does indeed work for these types of servers
when properly configured. Where I have seen ESX (and its little sister
GSX) fail is hosting for servers that run highly active databases. ESX
works great for dedicated SMTP\POP3\IMAP\HTTP servers, but I would
never put a production Exchange mail store server on ESX for
performance reasons alone. I have not specifically tested it however,
but its more of based on past experience (perhaps as virtualization
advances this will be a reality some day). Perhaps some day I'll have
time to run JetStress on an clustered Exchange server on ESX attached
to a SAN to see how it performs.
For anyone who might ask why such a large virtualization footprint in
our datacenters. The reason is simple. We have literally ran out of
space and power in our datacenters. Even as we build new datacenters
they fill up just as fast as we open them. While I don't have the
numbers to give (not my field of focus here) I seem to remember seeing
a report that virtualizing certain portions of our datacenter, where
possible, has so far saved millions in hardware costs.
It certainly is not for everything, but virtualization technology is
definitely improving to where it is definitely an option. For Exchange
and Active Directory, if ESX (or Virtual Server) is properly configured
it can work quite well.
Best regards,
Steven
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Brian
Desmond
Sent: Friday, October 28, 2005 6:49 PM
To: [email protected]
Subject: RE: [ActiveDir] Exchange now supported on virtual hardware
I disagree. Exchange on ESX can work out quite well in certain
situations...
Thanks,
Brian Desmond
[EMAIL PROTECTED]
c - 312.731.3132
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Medeiros,
Jose
Sent: Friday, October 28, 2005 5:29 PM
To: [email protected]; [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
Subject: RE: [ActiveDir] Exchange now supported on virtual hardware
I could not have worded that better.
Sincerely,
Jose Medeiros
ADP | National Account Services
ProBusiness Division | Information Services
925.737.7967 | 408-449-6621 CELL
--------------------------------------------------------
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of
[EMAIL PROTECTED]
Sent: Friday, October 28, 2005 6:53 AM
To: [email protected]; [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
Subject: Re: [ActiveDir] Exchange now supported on virtual hardware
I couldn't agree more with Tony -- Exchange is a resource hog and
should not be done on VMWare except for testing purposes. Just
because you can doesn't mean you should....
Chuck Gafford
Systems Architect
Unisys
Mobile: (405) 819-6766
-----Original Message-----
From: Medeiros, Jose <[EMAIL PROTECTED]>
To: [email protected]; [EMAIL PROTECTED]
Cc: # Jose Medeiros-IBM (E-mail) <[EMAIL PROTECTED]>
Sent: Thu, 27 Oct 2005 15:39:35 -0700
Subject: [ActiveDir] Exchange now supported on virtual hardware
Hi Tony,
I have to respond to this. Many IT managers think you can just
virtualize any application because of all the marketing hype. Be
very careful, I/O is critical to Exchange and any other database
application which may make running it on VMWARE or VIRTUAL SERVER
unpractical not to mention Exchange is also very resource intensive
and will take whatever it can. Now I am sure if you have a very
small environment that it may make sense, but with Microsoft Small
Business server why would you want to?
Any body else car e to throw in there two cents?
Sincerely,
Jose Medeiros
ADP | National Account Services
ProBusiness Division | Information Services
925.737.7967 | 408-449-6621 CELL
--------------------------------------------------------------
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-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]
Behalf Of Tony Murray
Sent: Thursday, October 27, 2005 2:49 PM
To: [email protected]
Subject: [ActiveDir] [OT] Exchange now supported on virtual hardware
Microsoft has introduced support for Exchange 2003 SP2 and later on
Virtual Server 2005 R2. This article has just been released.
http://support.microsoft.com/default.aspx?scid=kb;en-us;320220
I guess this means we can now run a DC and Exchange on the same
physical hardware without any of the previous limitations.
Tony
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