Information storage controller for controlling the reading/writing of information to and from a plurality of magnetic disks and an external device

摘要

An information storage controller comprises two memory groups. One memory group is used for external communication, while the other memory group communicates with a plurality of magnetic disks, so that work in each memory group is performed in parallel. Information is transmitted between the external equipment and the magnetic disk by a switch means. Further, the information storage controller comprises a redundant information generation circuit for reading information from a plurality of memories with an exclusive circuit which simultaneously generates redundant information and verifies and recovers data. Thus, a high speed information storage controller connected to a plurality of magnetic disks can be provided.