I think my gmail barfed. -----Original Message----- From: Martin Blackstone [mailto:[EMAIL PROTECTED] Sent: Thursday, July 31, 2008 6:05 PM To: NT System Admin Issues Subject: Re: VMWare and Exchange
What speed fiber? 4gb? On 7/31/08, Fogarty, Richard R Mr CTR USA USASOC <[EMAIL PROTECTED]> wrote: > I've worked with the VMWare engineer. His statement was pretty much what I > expected - he stated that the capacity planner usually is pretty much dead > on for most people. Those numbers indicated no issues that we didn't > expect. We analyzed the numbers of the IOPs and determined that a Fiber > Channel environment would be better (as space wasn't really an issue for us) > and decided upon that instead of ISCSI. > > I think the only issue that I can recall with MS clusters in a vmware > environment was that iSCSI was not supported. That was one of the other > reasons we went with FC. > > Still looking for stress testing our environment to get a more accurate > picture.... > > -----Original Message----- > From: Steven Peck [mailto:[EMAIL PROTECTED] > Sent: Thursday, July 31, 2008 7:13 PM > To: NT System Admin Issues > Subject: Re: VMWare and Exchange > > Multiple sites. Largest site runs 4,000 mailboxes (users + resource) > active/active/passive cluster, Hitachi SAN > > The SAN is shared across multiple resources through fiber switches. A > load in one environment (SQL, FPS, etc) can have a significantly > negative effect elsewhere. Not virtualized performance is barely > acceptable and our SQL clusters (databases in the hundreds of GB and > TB range) have to really watch disk IO as well. Mailbox size not > really regulated by fiat. > > That's why I have the caveats about your environment being key. > Checking your performance numbers in consideration with the VMware is > crucial. Your size though should really get you a VMware engineer to > personally chat with. We're being pushed in this direction as well > but we would be switching back ends. Until I actually see what that > will be I will remain somewhat cynical. :) > > I remember some reading some issues with running Microsoft clusters in > virtualized environments but cannot find the references and it was a > year or two ago I researched it so it may have changed since then. > > Steven > > On Thu, Jul 31, 2008 at 3:42 PM, Fogarty, Richard R Mr CTR USA USASOC > <[EMAIL PROTECTED]> wrote: >> Care to share the size of your environment? >> >> -----Original Message----- >> From: Steven Peck [mailto:[EMAIL PROTECTED] >> Sent: Thursday, July 31, 2008 5:28 PM >> To: NT System Admin Issues >> Subject: Re: VMWare and Exchange >> >> We have a test environment with Exchange clusters and it is very >> sensitive and stops occasionally and is small (100 test users). I >> doubt our production environment would survive virtualization with the >> number of users we have. >> >> Search for 'VMware Dell Exchange white paper" and you will find the >> white paper with information on Exchange 2003. VMware itself claims >> to be running all their Exchange servers in a VMware environment (big >> shock I know) and they are more then happy to provide access to >> reps/engineers to talk about it pretty much anytime. >> >> I myself am not comfortable with the concept of running an Exchange >> mailbox server on VMware due to disk i/o concerns in my environment >> but yours may be different. Things I have heard about Exchange 2007 >> will cause me to research that as a separate issue because the IO load >> is supposed to have been significantly reduced so the impact will >> probably be less. >> >> Any MS support concerns are a separate issue and for the most part can >> be dealt with if you are of sufficiently sized support contract. >> >> Virtualization depends on your environment. There are to many test >> environments alone out there proving it will work, it depends on will >> it work in your environments supporting your users and their >> expectations. >> >> Steven Peck >> >> On Thu, Jul 31, 2008 at 1:15 PM, Fogarty Richard MR - CONTR - Team >> EITC <[EMAIL PROTECTED]> wrote: >>> Has anyone virtualized their whole Exchange environment? Any issues? >>> >>> Has anyone had issue particularly with a backend box being virtualized? >>> What about if it is clustered with MS Clustering services. >>> >>> >>> >>> Rick Fogarty >>> Team EITC, Senior Systems Engineer >>> Planning & Systems Engineering Coordinator >>> US Army Special Operations Command >>> (910) 396-0501 >>> [EMAIL PROTECTED] >>> >>> [EMAIL PROTECTED] >>> >>> >>> >> >> ~ Upgrade to Next Generation Antispam/Antivirus with Ninja! ~ >> ~ <http://www.sunbelt-software.com/SunbeltMessagingNinja.cfm> ~ >> >> >> ~ Upgrade to Next Generation Antispam/Antivirus with Ninja! ~ >> ~ <http://www.sunbelt-software.com/SunbeltMessagingNinja.cfm> ~ >> > > ~ Upgrade to Next Generation Antispam/Antivirus with Ninja! ~ > ~ <http://www.sunbelt-software.com/SunbeltMessagingNinja.cfm> ~ > > > ~ Upgrade to Next Generation Antispam/Antivirus with Ninja! ~ > ~ <http://www.sunbelt-software.com/SunbeltMessagingNinja.cfm> ~ > -- Sent from Gmail for mobile | mobile.google.com ~ Upgrade to Next Generation Antispam/Antivirus with Ninja! ~ ~ <http://www.sunbelt-software.com/SunbeltMessagingNinja.cfm> ~ ~ Upgrade to Next Generation Antispam/Antivirus with Ninja! ~ ~ <http://www.sunbelt-software.com/SunbeltMessagingNinja.cfm> ~
