I have an IBM x360 with a 4MX conroller card attached to an EXP300. I have 2 internal 18GB drives in a RAID1 config. In the EXP300, I have 10, 73GB drives in a RAID10 configuration. I need to add 4 additional 73GB drives to the RAID10 configuration as the data files have grown faster than we anticipated. Is this easily done without losing data or having to move the data off and re-create the entire array? I've searched IBMs website and am not having any luck with documentation remotely close to this. I'd appreciate any help anyone can give me!