FBCJohn, The VD was missing when you removed the 73GB drives it resided on.  The reason you see VD Missing is due to the fact that the VD configuration information is stored on both the drives and controller. When the controller see's that there is no drive with the matching configuration as it has, it will show as VD Missing. The easiest way for them to just be seen by the controller would be to simply create a new VD with the larger drives. Then reinstall OS and reimage.  If you are intending on trying to maintain the existing VD then let me know and we can go from there, as the process is more elaborate. Let me know.
I have an 8 year old PowerEdge 2900 that the OS hard drives are almost full (73GB drives mirrored @ 95% full)  I want to replace them with 300GB drives to buy me another year.  I have an image of the drives but when I put the new drives in the Raid controller said I was missing the VD.  How can I get the Raid controller to recognize the new drives so I can put the image on them?
Replacing 73GB drives with 300GB Drives on a PowerEdge 2900