Storage system having plural controllers and an expansion housing with drive units

摘要

The storage system includes a first controller adapted to transfer/receive data to/from a host computer and to receive/transfer data from/to first type drive units via a first type interface of the first controller; a second controller adapted to transfer/receive data to/from the host computer and/or another host computer and to receive/transfer data from/to the first type drive units via a first type interface of the second controller, the first type drive units each having a converter and a first type drive, the converter converting between a first type protocol and a second type protocol, the first type drive having a second type interface and storing data converted to the second type protocol by the converter; and an expansion housing including the first type drive units. Each of the first type drive units are coupled to both the first and second controllers.