Storage subsystem with management site changing function
AssigneeHitachi, Ltd.
InventorsKiyohiro Obara, Yoshifumi Takamoto
Life of this patent
Estimating the term…
Abstract
A storage subsystem which includes a plurality of disk controllers, a plurality of disk drives connected via a network to the plurality of disk controllers, and a path controller connected to the plurality of disk controllers. The path controller changes a management site, which manages a volume in each disk drive managed by each disk controller, from one disk controller to another. The path controller has a correspondence table which stores a correspondence between a volume number of a volume in each disk drive and identification information of the disk controller which manages a volume corresponding to the volume number.
Claims2
A disk storage subsystem comprising:
- a plurality of disk controllers;
- a plurality of disk drives;
- an internal network or switch interconnecting said plurality of disk controllers and said plurality of disk drives;
- management site changing means, connected to said plurality of disk controllers, for changing a management site of one disk controller managing a plurality of disk drives to another management site;
- access path changing means for changing access paths between a host computer connected to said plurality of disk controllers and each of said plurality of disk controllers;
- and
- means for storing a correspondence table between a volume number in each of said plurality of disk drives and each of the access paths.
Dependencies are inferred from the claim text.