Disclosed is apparatus and methods for enabling an appliance to receive
data being sent between any host of a host cluster to a specified storage
device's logical unit (LUN) in a single stream or session. In one
embodiment, a data virtual target is initially set up for a specified
storage device LUN so that data written from a host to the specified
storage device LUN is received by the DVT. An appliance then sends a
session request to mirror data that is sent to the DVT (and specified
storage device LUN) to a specified LUN of the appliance. The session
request is not host specific. That is, data that is sent by any host to
the DVT is mirrored to the same appliance LUN.