Thanks for the info Kevin Bill Foster Sr. Systems Engineer, IT Infrastructure WellCare Health Plans, Inc. 8735 Henderson Road Ren1, 1st Floor Tampa, Florida 34609 Office: 813-290-6200 ext 1158 bill.foster@xxxxxxxxxxxx From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On Behalf Of Kevin Stewart Sent: Tuesday, August 18, 2009 11:32 AM To: thin@xxxxxxxxxxxxx Subject: [THIN] Re: XenServer Question I think Ron Oglesby (the guru of all things VM) would say use single proc VMs with 4gb each. As far as capacity, you need to test the app. At a minimum look at the memory on a comparable server before and while running a single, and then multiple instances. You can usually safely estimate capacity from that number. Kevin On Tue, Aug 18, 2009 at 11:24 AM, Foster, Bill <Bill.Foster@xxxxxxxxxxxx<mailto:Bill.Foster@xxxxxxxxxxxx>> wrote: Hello all, We are planning on converting our XenApp environment to VM's running on a XenServer platform deployed by Provisioning server and we want to maximize the hardware we have. We have 80 2 x Dual core P Class BL25 G2 blades with 8 GB of ram and we plan on upping the ram to 16gb. We have been debating on whether we should run 3 single processor x32 VM's with 4GB of ram each thinking that would maximize the hardware best or 1 3 processor vm with 14gb of ram. We figured leaving 1-2 GB of ram and 1 processor for the host would be sufficient. I realize this is really general and does not take application load into consideration. Any advice you can provide would be appreciated. Regards, Bill Foster Sr. Systems Engineer, IT Infrastructure WellCare Health Plans, Inc. 8735 Henderson Road Ren1, 1st Floor Tampa, Florida 34609 Office: 813-290-6200 ext 1158 bill.foster@xxxxxxxxxxxx<mailto:bill.foster@xxxxxxxxxxxx> Privacy Notice: This electronic mail message, and any attachments, are confidential and are intended for the exclusive use of the addressee(s) and may contain information that is proprietary and that may be Individually Identifiable or Protected Health Information under HIPAA. If you are not the intended recipient, please immediately contact the sender by telephone, or by email, and destroy all copies of this message. If you are a regular recipient of our electronic mail, please notify us promptly if you change your email address. -- Kevin G. Stewart Privacy Notice: This electronic mail message, and any attachments, are confidential and are intended for the exclusive use of the addressee(s) and may contain information that is proprietary and that may be Individually Identifiable or Protected Health Information under HIPAA. If you are not the intended recipient, please immediately contact the sender by telephone, or by email, and destroy all copies of this message. If you are a regular recipient of our electronic mail, please notify us promptly if you change your email address.