I have an HP DL380G5 with (8) 146G drives in a RAID 5 configuration. My OS is Windows 2008 Enterprise and I have 4 virtual machines with the VHD files stored on the drives. I am currently running out of space on the array and need to increase the size of the drives. Since I have no expansion bays, I was wondering...can I replace the drives, one at a time, with 600G drives, letting each one rebuild before installing another, until all 8 slots are populated with the new drives? TIA for any suggestions.