STORAGE SUBSYSTEM AND METHOD FOR CONTROLLING THE SAME

摘要

The present invention aims at providing a storage subsystem capable of improving a backend-side I/O processing performance and enabling a single semiconductor memory adapter to be replaced at a time. Therefore, the present invention provides one or more semiconductor memory adapter boards mounting semiconductor memories each having smaller capacity than SSDs attached detachably to a drive canister, a wide port connection established to access the semiconductor memories, the semiconductor memories used as a read cache area of HDDs, and further adopts a wind direction control structure for ensuring a cooling wind path to the HDDs when an adapter board is attached.

主权项

1. A drive canister coupled to a storage subsystem, the drive canister comprising:
a connector board for coupling with a storage controller controlling the storage subsystem; one or more detachable storage drives coupled to the connector board and one or more detachable semiconductor memory adapter boards; and a wind direction plate for controlling a direction of cooling wind toward the storage drive and the semiconductor memory adapter board; wherein the wind direction plate changes its inclination according to a mounting status of the semiconductor memory adapter board so as to change the direction of cooling wind to the storage drive and the semiconductor memory adapter board; the storage drive and the storage controller are coupled via a single signal line; the semiconductor memory adapter board is coupled via multiple signal lines including two or more lines having redundancy; the semiconductor memory adapter board has a semiconductor memory, and data read from the storage drive is stored in the semiconductor memory as a read cache area.