Currently Being ModeratedOct 23, 2013 9:19 AM (in response to BecGuy66)
Which mac are you trying to install Mavericks on? If it's an Xserve only the 2009 model is supported in Mavericks.
With 10.5 Server there was a separate client and server edition which is also true of 10.6 Server. From then on Apple moved to a pure client version with Server being an optional paid download so the upgrade procedure varies. So you'd either need to do a clean install of Mavericks or upgrade to Snow Leopard Server then upgrade via the app store. http://www.apple.com/uk/osx/server/how-to-upgrade/ There of course are probably other ways around it which you can google but this would be the official option. Snow Leopard server can be had reasonably cheaply on ebay now. You should also make sure your mac can run it and that you don't lose any functionality you already had.
Currently Being ModeratedOct 23, 2013 10:19 AM (in response to BecGuy66)
You can find out in a couple of ways.
1) Click on the apple symbol in the top right corner.. Click About this mac then "More Info" you'll see the serial number there which you can paste into this site https://selfsolve.apple.com/agreementWarrantyDynamic.do
Alternatively you can list the specifications System profiler gives you here and one of us can tell you.
2) On the back of an Intel Xserve is a pull out tab which lists the specifications of the server. You can post these here and one of us can get back to you..
If the processor is listed as one of the following it's a 2009 (2.26 ghz, 2.93ghz)
2ghz is a 2006, 2.66 ghz could be a 2006 or 2009, 3ghz could be a 2006 or 2008
2.8 ghz is a 2008 Xserve
To differentiate between a 2006 or 2008/2009 2.66 xserve if you look at the front and it has a firewire 400 port then it's a 2006. If it's USB it's a 2009. Same applies for a 2006 3ghz or 2008 3ghz xserve.
Hope that helps