Guys I have an HP Proliant DL380 running Ubuntu 12.04 with ISPConfig 3 installed. I have purchased 2x146GB hot plug SCSI hard drives to replace 2x 18GB ones. I have setup HP's RAID5 on all of the drives. Is it possible to replace these drives without losing any data? I have my mail server and webserver running and is essential for our work to remain intact. Any help much appreciated