Exactly what it says on the tin, I’ve added a new installation cookbook for SUSE 11 SP3 which creates Violin on a set of 4k devices.
I’ve started setting the add_random tunable of the noop I/O scheduler because it seems to give a boost in performance during benchmarking runs. If I can find the time, I will blog about this at some point…
For more details read this document from Red Hat.
flashdba 
Here http://wp.me/p35SjX-1t is evidence you should follow all the best practices including the udev rules, even in a Virtual data base server.