Patent ID: 6732243
Filing Date: 2004-05-04
Classification: G06F

Abstract:
A method for mirroring data in a storage system including a storage array, comprising:providing a first controller management module having a number of components including a first direct memory access engine and a first memory, said first controller management module for controlling read/write operations involving said storage array; providing a second controller management module having a number of components including a second direct memory access engine and a second memory, said second controller management module for controlling read/write operations involving said storage array, wherein said first direct memory access engine is used in mirroring data to said second controller management module and said second direct memory access engine is used in mirroring data to said first controller management module; and mirroring first data from said first memory of said first controller management module to said second memory of said second controller management module using said first direct memory access engine and using at least one of said number of components of said is second controller management module but not using said second direct memory access engine.