초록 ▼

A disk array controller or a disk array system includes a disk array control unit having an MPU 8 and a user data transfer control unit having host interfaces 3 and 4 with a host computer 17, a memory 5 for temporarily storing data, a redundant data generator 7 for generating redundant data, multi-c

A disk array controller or a disk array system includes a disk array control unit having an MPU 8 and a user data transfer control unit having host interfaces 3 and 4 with a host computer 17, a memory 5 for temporarily storing data, a redundant data generator 7 for generating redundant data, multi-channel disk device interfaces 16a.about.16e and 12a.about.12e and a data transfer control circuit (DMAC) 6 for controlling the data transfer between the host interface, the memory, the redundant data generator and the disk device interface. Internal buses are of at least three-bus structure including a control bus (for MPU) 15, a host data bus 13 and a drive data bus 14.

대표청구항 ▼

[ What is claimed is:] [1.] A disk array controllers comprising:a disk array control unit having one or more MPUs; anda user data transfer control unite including:a host interface controller which interfaces with a host computer,a memory which temporarily stores data,a redundant data generator which

[ What is claimed is:] [1.] A disk array controllers comprising:a disk array control unit having one or more MPUs; anda user data transfer control unite including:a host interface controller which interfaces with a host computer,a memory which temporarily stores data,a redundant data generator which generates redundant data,disk device interface controllers, anda data transfer controller having one or more channels which controls data transfer between said host interface controller and said memory, between said redundant data generator and said memory, and between said disk device interface controllers and said redundant data generator;a control bus which conducts data transfer among said disk device interface controllers, said redundant data generator and said data transfer controller;a host data bus which conducts data transfer between said host interface controller and said memory by said data transfer controller; anda drive data bus which conducts data transfer between said disk device interface controllers and said memory by said data transfer controller.