From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Chris Vella" Subject: xen setup/config Date: Wed, 22 May 2013 12:31:57 +1000 Message-ID: <00d801ce5694$87b52fb0$971f8f10$@com.au> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Language: en-au List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: xen-devel@lists.xen.org List-Id: xen-devel@lists.xenproject.org A little help please guys or a pointer in the right direction for a configuration/setup recommendation. Whilst I have been using the XEN hypervisor in our office/dev environments for some time, I am preparing to deploy the latest XCP/Xen build for our live/collocation installation. To date I haven't used any virtualisation at all in our live environment. Our setup is relatively straightforward with a physical three tier model: . Presentation tier (web servers, smtp, etc.) . Logic tier (business and operational servers) . Data tier (database and storage) I am going to leave the Data tier non virtualised and virtualise (compress) the logic and presentation tier onto the same physical hardware. So the example scenario is: . Both the Presentation and Logic tiers currently have 6 physical servers each (12 total) in a load balanced (shared nothing) arrangement. These will be replaced with 3-4 physical servers running at least two VM's on each. . How would you set up the XEN environment for dynamic workload structures? . If spikes come through via the presentation tier how do you prioritise CPU/bandwidth to these servers/VM's? . Likewise if the presentation tier is acquiescent then how do you control it such that if the logic tier gets busy it can consume idle CPU/bandwidth? Regards, Chris