Patrick, There is no harm running Exchange in ESX/Vmware environment Only thing since it is high I/O operations application Microsoft will not suggest to Install SQl/Exchange in Vmware Environment. Note: If you have any problem with Exchange, Microsoft PSS will not support you :-) Thanks and Regards PRABHAKAR KAMUNI | ECG- De Beers Project | Tech Lead Unisys Global Services India | 135/1 Residency Road | Bangalore | Business Phone +91 4159 4828|Net 759 4828 Mobile: 0091-9945333367 THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers. ________________________________ From: exchangelist-bounce@xxxxxxxxxxxxx [mailto:exchangelist-bounce@xxxxxxxxxxxxx] On Behalf Of Patrick Sent: Friday, January 30, 2009 6:12 PM To: exchangelist@xxxxxxxxxxxxx Subject: [ExchangeList] Exchange and virtualization Hi Guys, We have an exchange 2003 server in a VMware environment. I am sure I have read somewhere that it is not adviceable to run either Exchange or Sql on VM's. Anyone got any documentaion / whitepaper to back that up, or have I got it wrong. Thanks Patrick