Business was better than expected at Citrix Systems in its first quarter of 2011, with revenues up 18.5 percent to $490.9m and net income rocketing up 54.9 per cent to $73.5m. Thanks to its expanding business, Citrix raised its revenue guidance for the full year by $30m, and now expects 2011 sales to come in at between $2.14bn …
"XenServer is free and so does not drive much revenue on its own at Citrix – there is some support stream for customers who use it as their server virtualization layer"
$5000/server doesn't seem like free to me:
Sure, there IS a free version, but you don't get all of the features. There's also XCP (the OSS spinoff), but you don't get support for that at all!
Not just that
But Xen is still immature in some ways. They just recently added memory ballooning and they STILL don't have a virtual network environment (VMWare has configurable VSwitches that support VLAN and the like). It's ridiculous to leave one server NIC empty just so your P2V machines can be given a NIC, but not exposed to the network prematurely. A detached VSwitch in VMWare solves this problem easily. Even allows for a completely isolated network all internal to the system. Another sign of ad-hoc immaturity? XenConvert: Makes a MS VDisk image of the machine, remounts that and /requires/ DHCP for a transfer VM to copy the contents of the mounted VDisk image (yes, it mounts it and requires you to enable auto driveletter assignment). In contrast, VMWare Converter images directly to the VM server and can resync changes post-copy. If Xen fixed these issues, I'd be more tempted to use it over ESXi.
Wow for all of the noise of Citrix in the market, they have an annual revenue about 1/2 of IBM Australia - http://www.theaustralian.com.au/australian-it/ibm-first-to-crack-4bn-goal/story-e6frgalo-1225708576233
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