How can I share a disk resoruce between a clustered sql serer and a standalone remote sql server? I do not want the disk resource to be part of the cluster either? Is this possible? Win 2003/R2

1 active-passive clustered sql server
1 standalone sql server

I want to be able to share one-off backup files created on cluster to standalone ss05 for test/qa .. no maint plans, occasional on request use.

drive will be temporary scratch pad facility, not permenant part of infra.

Is this possible ??