Patent ID: 6493795
Filing Date: 2002-12-10
Classification: G06F

Abstract:
A data storage system wherein a host computer is coupled to a bank of disk drives through an interface, such interface comprising:a system memory comprising a pair of system memory sections, each one of the memory sections having a plurality of addressable locations for storing data written into such one of the memory sections at the addressable locations; a system bus coupled to the pair of system memory sections; a plurality of directors coupled to the system memory through the system bus, such directors controlling data transfer between the host computer and the bank of disk drives as such data passes through the system memory; and wherein when the system is in a dual-write mode, one of the directors stores therein data to be transferred between the host computer and the bank of disk drives, transfers such stored data sequentially during a pair of system memory cycles to the system bus, and enables both of the memory sections coupled to such system bus to have written therein, at the same one of the addressable locations, the data transferred sequentially during the pair of system memory cycles to the system bus.