Despite being written for Debian Etch, I used the following How To to install RAID1 on an Ubuntu 8.04 LTS version. http://www.howtoforge.com/set-up-raid1-on-a-running-lvm-system-debian-etch It has been working fine for some time. Until recently, my server was limited to just two SATA drives. I recently installed another SATA controller and have the ability to add more drives. I would like to add another drive and convert the array to a RAID5 configuration. Can I modify the existing array? If so, will data on the array survive the conversion? Or do I have to (or should I) destroy and rebuild the array to accomplish this configuration? Thanks.