I've been rather sad at the lack of XenServer stuff on here, so I thought I'd create my own thread. I've been stuck at work with not being limited in my choices for budgeting - I'd love a better version of VMware but instead to get the features I want (mainly live VM migration) I've turned to XenServer. To get things started I built a storage box just using FreeNAS - quick and simple to do, just running off a USB stick. Got about a dozen 1TB drives mirrored in one big zpool, with two large zvols. Box has 6 gigabit connections to a switch dedicated to iSCSI usage. Next step was to install XenServer - installing from USB is simple and quick enough. Then installed XenCenter on a Windows machine. Interface is nice and simple, seems easy enough to use without having to read endless documentation. First hiccup was that I cannot use the nifty VMware->XenServer conversion tool, as I have a "free" edition of ESXi. Bummer Alternative is to either use their P2V tool, copy the VMDK files, or "Export" to OVF. Spent my Saturday creating a few Windows VM's, copying files around and testing general performance - in general very good, no lag while using remote desktop and moving multiple files at 90mb/s. Sunday was VM migration day - moved some Linux VM's to XenServer (voip, web test, web production, nagios/rt/sugarcrm) - took a little while but everything went smoothly. Once the old ESXi host was empty I shut it down and installed XenServer so I would have 2 hosts. Then came my next problem - the old ESXi box only had dual onboard NICs - crack it open and its PCIX... off to ebay for some cards. Once they arrive (probably Wednesday) I can migrate the VMs, shut down the box, and install the card. I'll probably put one of my spare Intel dual-gig cards in the other box as well. The real fun begins when I migrate my two best ESXi hosts which run mainly Windows guests - the domain controllers will be re-created from scratch, mainly because they are still 2003, but I'm not sure how to handle our SQL server... I'm hoping the P2V works! Anyone else out there using XenServer? What do you like, what do you dislike? Any gotchas or issues I need to watch out for?