One of the hard drive in my central axis(converted from shared storage II) failed. I wipe the remaining hard drive clean, partitioned the remaining hard drive and a new hard drive, copied firmware on to both hard drive, then put them back into the casing. You can get the Central Axis firmware from seagate website, the produre to partition hard drive can be found at this website
http://scratchpad.wikia.com/wiki/Open_MSS-II
If you want to do it, make sure backup all your data, since you are going to wipe out all data on your hard drives. Post back if you have any questions during the process.
