we have an exch 2007 ccr server thats virtual, the vm admin added space to a couple of the drives to make two SG's larger. server a see's both new drive extensions for two SG's. server b see's only on drive extension on a SG. so in server manager, disk management the lower pane shows the extended space but the upper pane doesnt. (volume list + graphical view)

This is something related with disk assign by storage. Did you tried to rescan disk. Also rebooting host sometime resolve this kind of issue. Anil

yes. no reboot didnt resolve.

answer: suspend replication format drive reseed