So, what with the first gen to next gen migrations ongoing, a lot of people may need to upgrade their xen server tools to the most recent version. Anyone who is running 5.5 or lower should upgrade to xs tools 6.2.0 pronto, it’s much more stable and fixes a lot of bugs that might exist in the earlier tool verisons. Here is how to do it.

But first ALWAYS TAKE A BACKUP IMAGE

Just in case. Remember installing XEN TOOLS can break your container if done incorrectly or if god hates you .

wget http://boot.rackspace.com/files/xentools/xs-tools-6.2.0.iso

mkdir -p tmp; mount -o loop xs-tools-6.2.0.iso tmp; cd tmp/Linux; ./install.sh; cd ../..; umount tmp

An excellent guide

https://support.rackspace.com/how-to/installing-xenserver-tools-on-next-generation-windows-cloud-servers/