Patent ID: 6360306
Filing Date: 2002-03-19
Classification: G06F,Y10S

Abstract:
A method of copying data, comprising:using a first storage controller at a first location to create a set of copies of first data in a plurality of storage devices at the first location; suspending the set of copies while one of the plurality of storage devices is transported to a second, remote location; maintaining in the first storage controller a record of changes made to the data while the set of copies is suspended; receiving a unique identifier of said one of the storage devices from a second storage controller located at the second, remote location, the unique identifier having been transmitted from the second storage controller in response to the second storage controller determining that said one of the storage devices is newly connected to the second storage controller; and transmitting second data representing the record of changes from the first storage controller to the second storage controller in response to receiving the unique identifier, the second data for re-establishing the set of copies, such that one of the re-established set of copies is located in said one of said storage devices after said one of the storage devices has been transported to the remote location and connected to the second storage controller.