M: drive on an Exchage 2000 cluster

I have an Exchange 2000 2 node Active/Active cluster that has two Exchange Virtual Servers – VS01 and VS02. Right now I can see the M: drive on VS02 but not VS01, is the M: drive only supposed to display on one node of the cluster and is it possible to display the M: drive on VS01? How can I change it to display on the first node????