Electrical computers and digital processing systems: memory – Storage accessing and control – Hierarchical memories
Patent
1997-03-27
1998-09-22
Chan, Eddie P.
Electrical computers and digital processing systems: memory
Storage accessing and control
Hierarchical memories
711113, 711145, 711147, 39520043, 39518209, 39518211, 395726, G06F 1202
Patent
active
058130322
ABSTRACT:
A system and method for destaging changed data from a shared cache castout in a shared data environment distributes castout ownership for a dataset among a plurality of systems having an update interest in the dataset. One system is designated as having castout ownership of the dataset in a primary state. All other systems having an update interest in the dataset hold castout ownership for the dataset in a backup state. When the primary owner relinquishes ownership, primary ownership is passed to one of the backup systems. A structure castout owner for the entire cache assumes the responsibility of castout of changed data for a dataset for which the primary castout owner has had a failure.
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Bhargava Gautam
Narang Inderpal Singh
Teng James Z.
Chan Eddie P.
Dawkins Marilyn Smith
International Business Machines - Corporation
Kim Hong C.
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