A method and apparatus for providing mirroring of off-line storage data in a computer system. In one embodiment of the present invention, a computer system includes an application program, a plurality of storage devices, at least one storage driver that provides an interface between the application program...http://www.google.ca/patents/US6477591?utm_source=gb-gplus-sharePatent US6477591 - Method and apparatus for storing and copying data via a first path and a second path wherein second path bypasses mirror driver
