Abstract: A method, apparatus and program storage device for allowing continuous availability of data during volume set failures in a mirrored environment. Continuous servicing of input/output request for a volume set having failed on a primary array using either portions of the failed volume set or a mirrored volume set is provided. A determination is made whether the failed volume set can service the input/output request and continuous data availability is provided by using the failed volume set to process the input/output request when the failed volume set can service the input/output request, else using a remote mirrored volume set to process the input/output request.
Type:
Grant
Filed:
May 9, 2003
Date of Patent:
August 21, 2007
Assignee:
International Business Machines Corporation
Inventors:
David Alan Burton, Noel Simen Otterness