Data storage system having a host computer coupled to bank of disk drives through interface comprising plurality of directors, two pairs of buses, and memory sections

A data storage system wherein a host computer is coupled to bank of disk drives through an interface, such interface having a plurality of directors and a memory interconnected by four busses, such directors controlling data transfer between the host computer and the bank of disk drives as such data passed through the memory, such interface comprising:

• a printed circuit board having:
• a plurality of electrical connectors arranged in a linear array and electrically connected to the busses, such electrical connectors being adapted to receive the directors and the memory and electrically interconnect the directors and memory received therein to the bussed;
• and
• wherein alternating ones of the directors are electrically connected to a first pair of the four busses and directors interleaved with such alternation ones of the directors are electrically connected to a second pair of the four busses.

A data storage system wherein a host computer is coupled to a bank of disk drives through an interface, such interface comprising:

• a memory comprising a high address memory section and a low address memory section;
• 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;
• a plurality of busses;
• wherein each one of the memory sections is in communication with a corresponding different pair of the busses;
• and
• wherein each one of the directors is in communication with the plurality of memory sections through the busses.

A data storage system wherein a host computer is coupled to a bank of disk drives through an interface, such interface comprising:

• a memory comprising a high address memory section and a low address memory section;
• 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;
• a pair of high address busses electrically connected to the high address memory and a pair of low address busses electrically connected to the low address memory;
• and
• wherein each one of the directors is electrically connected to one of the pair of high address busses and one of the pair of low address busses.

A data storage system wherein a host computer is coupled to a bank of disk drives through a system interface, such system interface comprising:

• a memory having a high address memory section and a low address memory section;
• 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;
• a pair of high address busses electrically connected to the high address memory section and a pair of low address busses electrically connected to the low address memory section;
• each one of the directors being electrically connected to one of the pair of high address busses and one of the pair of low address busses.

A data storage system wherein a host computer is coupled to a bank of disk drives through an interface, such interface comprising:

• a memory comprising a high address memory section and a low address memory section;
• 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;
• a plurality of busses;
• wherein each one of the memory sections is in communication with a corresponding different pair of the busses;
• and
• wherein each one of the directors is in communication with the plurality of memory sections through the busses.

A data storage system wherein a host computer is coupled to a bank of disk drives through an interface, such interface comprising:

• a memory comprising a high address memory section and a low address memory section;
• 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;
• a pair of high address busses in communication with the high address memory and a pair of low address busses in communication with the low address memory;
• and
• wherein each one of the directors is in communication with one of the pair of high address busses and one of the pair of low address busses.

A data storage system wherein a host computer is coupled to a bank of disk drives through a system interface, such system interface comprising:

• a memory having a high address memory section and a low address memory section;
• 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;
• a pair of high address busses in communication with the high address memory section and a pair of low address busses in communication with the low address memory section;
• each one of the directors being in communication with one of the pair of high address busses and one of the pair of low address busses.

A data storage system, comprising:

• a host computer;
• a system interface;
• a bank of disk drives coupled to the host computer through the system interface;
• and
• wherein the system interface comprises:
• a memory having a high address memory section and a low address memory section;
• 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;
• a pair of high address busses in communication with the high address memory section;
• and
• a pair of low address busses in communication with the low address memory section.