Patent ID: 6910101
Filing Date: 2005-06-21
Classification: G06F

Abstract:
1. A storage subsystem comprising: a plurality of disk controllers including a first disk controller and a second disk controller; a plurality of disk drives; an internal network or switch interconnecting said plurality of disk controllers and said plurality of disk drives; and a channel path controller connectable to said plurality of disk controllers and a host computer, wherein said channel path controller receives a first and a second frame from the host computer and sends the first and second frame to said first disk controller, wherein said first disk controller sends the first frame to a first portion of said plurality of disk drives and the second frame to a second portion of said plurality of disk drives, wherein said channel path controller changes a first access path using the first disk controller of the first frame into a second access path using the second disk controller and sends the first frame to the second disk controller and the second frame to the first disk controller, wherein said first disk controller sends the second frame to the second portion of said plurality of disk drives and said second disk controller sends the first frame to the first portion of the plurality of disk drives after changing the first access path into the second access path.