Method and system for directly interconnecting storage devices to controller cards within a highly available storage system

摘要

Method and system for enhancing the reliability of an available storage subsystem. Data storage units (302, 316) are equipped with a number of I/O controller-card adaptors (317, 318, 308, 309) that mate with complementary adaptors (310, 311, 319, and 320) affixed to a number of redundant I/O controller cards (304, 305). The data storage devices plug directly into I/O controller cards and receive all data, control signals, and power equally from the I/O controller cards, eliminating the need for a midplane circuit card.