I am about to install my first ESX Server. Due to budget constraints we are only implementing the single ESX box now, with plans to add a second host and VirtualCenter next year. Will there be any problems getting VirtualCenter installed and configured to manage the first ESX host if it is installed after that first ESX host is already up and running stand-alone? Will there be any problems "converting" the stand-alone host to a VC-managed host?
You shouldn't have any problems. After you install VC, you'll want to convert your current host based license file to a license file that will run on the VC licensing service and then update your current ESX host to got it's license info from the VC license server.
Once you have VC up and running, besides the change in licensing, you'll just have to add your existing ESX host.
Let me add my question to this topic ...
I am planning the same mikera.
Our route will be similar to this;
\- Install second esx server on the new hardware
\- Create new vm for ms os for vc in the one of the esx server.
\- Create license server in one of the esx server.
\- Point vc and esx's to license server.
\- Add both esx servers to vc
I have done exactly this and it works fine. Moved from a standalone ESX server to an ESX server and VC install on a VM.
You will need a Windows 2003 license for the VC VM, and a MS SQL 2000 (SP4) or MS SQL 2005 license for the VC database. Or you can use an Oracle DB.
You can run SQL in the same VM as VC or on a seperate server (VM or physical). Unless you're looking at a large farm, you would be fine running it all within one VM.
I have been doing the same planing since last year and now got approve for second server. I already install VC and 1st ESX last year back but nothing is configured on VC.
I am planing to install 2nd ESX server first and then configure VC with our central SQL 2000 database cluster server which we are upgrading to SQL 2005 in next 6 months also.
I don't think so there is any problem if you do it correctly and get stuck come back to discussion for help.