Abstract: Methods and apparatus for migrating data with minimal disruption in a storage virtualization system. In one embodiment, a method includes collecting information on a backend logical unit (LUN) having a direct path from a host, presenting the backend LUN to the host through a virtual target via the storage virtualization application, disconnecting the direct path from the host to the backend LUN so that the backend LUN is accessed by the host via the storage virtualization application transparently to the host, and migrating data from the backend LUN to a destination storage transparently to the host.

Abstract: The capacity of a data storage management system may be increased with disclosed methods and systems. One method may increase the capacity of a data storage management system that polls a plurality of monitored elements in a data storage environment. The method includes creating a flag for a poll request and associating a first value for the flag with a first subset of the plurality of monitored elements. The method further includes interpreting a first poll request that includes the first value for the flag as directed to the first subset and interpreting a second poll request that does not include the first value for the flag as not directed to the first subset.