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I just got the official release of vSphere 4 today and finally got it work on my test lab. 1st thing before I upgraded my ESX servers is I need to upgrade my vCenter. If you are running RC now, you may not able to manage the official release vSphere 4 host by RC version of vCenter you had. I reinstall fresh for my vCenter 4 on Windows 2003. Since is a test lab, I do not build the DB on SQL Server as I did for production. I am using the default sql express as part of the installation.The installation process will not be much different compare to RC, but the resource utilization of the vCenter 4 will make the different.

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As vSphere is on the way, many of you may had experienced to test the RC release now. 1 of the thing you may notice is about the performance on vCenter 4 which bundle as part of the vSphere infrastructure in the coming release. I had personally compared the system performance within vCenter 2.5 and 4, and I found the vcenter 4 will require more resource to satisfy the system to run smoothly. The resource require to run the SQL server will not make any big different in this case, but you will notice the tomcat process in the task manager will take up quite a number of resources from your vCenter server.

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