Patent ID: 7441052
Filing Date: 2008-10-21
Classification: G06F,Y10S

Abstract:
1. In a system comprising a first computer coupled to first and second storage devices, a method for providing copies of data, the method comprising: cross-referencing (a) a hardware address identifying the first storage device and (b) a first device identifier for representing the first storage device to a program in the first computer; cross-referencing (a) a hardware address identifying the second storage device and (b) a first device identifier for representing the second storage device to a program in the first computer; pairing the first and second storage devices; adding the pair, by information other than first device identifiers, to a copy group already containing another storage-device pair; identifying the copy group; cross-referencing the copy-group identifier and the first device identifiers of the pair; and preparing to copy data, using the cross-reference.