I have been setting up a two machines with software raid to use as Xen virtual environments. The two machines have 5 and 4 500GB disks. I decided to run Gentoo as the Dom0 OS because there is lots of good documentation for it and it has always been my favorite GNU/Linux distribution. The install of the OS and xen is easy. I opted for the latest Xen 4.0.1rc3-pre code. Just emerge xen and xen-tools to get all the prerequisites and the unmerge them and build the latest source. Creating the RAID arrays was also easy. I did the following.
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