Patent Number: 7,711,683

Title: Method and system for maintaining disk location via homeness

Abstract: A method and system manages ownership information about disks in a storage network without the need for an emulated, partner mode system. The method and system provides for ownership information, including a current owner and a home owner for resources, such as disks, to be stored on each disk in a storage system, as well as to be stored in memory on each storage system node in the network. A further aspect of the invention is a disk homeness application program interface (API), which provides commands that can be utilized by an administrator at a host computer to set, modify and display ownership information about each disk in the cluster. Upon a takeover, any node in the network can takeover one or more disks by reading the ownership information stored on the disks or in the tables.

Inventors: Watanabe; Steven S. (San Jose, CA), Strange; Stephen H. (Mountain View, CA), Coatney; Susan M. (Cupertino, CA)

Assignee: NetApp, Inc.

International Classification: G06F 17/30 (20060101)

Expiration Date: 5/04/12018