Systems and associated methods provide a level of indirection between
multiple host computers and multiple data storage resources, such as
removable media data storage devices. At least one of the hosts is not
provided with direct access to some of the removable media data storage
devices. Instead, logical addresses are provided to the host computers,
where the logical addresses can relate to physical addresses associated
with the data storage resources. A data storage resource handle or
logical proxy may be presented to a host, and a management layer
determines whether the host receives access to physical data storage
resources, or virtual resources that emulate the physical resources.