摘要：

A data storage system wherein a host computer is in communication with a bank of disk drives through an interface. The interface includes: a memory; a plurality of directors for controlling data transfer between the host computer and the bank of disk drives as such data passes through the memory; and a plurality of busses in communication with the directors and the memory. Each one of the directors includes a central processing unit. The central processing unit includes: (A) a microprocessor; (B) a main memory; and (C) a microprocessor interface. The microprocessor interface includes: (i) a data rebuffering section disposed in the chip and adapted to couple data from a one of a plurality of data ports to a data port of the microprocessor selectively in accordance with a control signal; and (ii) a main memory interface adapted for coupling to a main memory for the microprocessor, such main memory interface being adapted for coupling to the microprocessor and being coupled to the data rebuffering section for providing control signals to the main memory section for enabling data transfer between the main memory and the microprocessor through the data rebuffering section. A controller is coupled to the data rebuffering section for producing the control signal. The central processing unit main memory is a selected one of a plurality of memory types each type having a different data transfer protocol and the main memory interface is configured in accordance with the selected one of the plurality of memory types to provide a proper memory protocol to data being transferred between the microprocessor and the main memory through the main memory interface. One main memory is an SDRAM and another a RDRAM.

展开