Computer program product for continuous destaging of changed dat

Details Computer program product for continuous destaging of changed dat Computer program product for continuous destaging of changed dat

1995-05-31

1998-05-12

Chan, Eddie P.

395440, 395672, 39520008, G06F 1202

Patent

active

057519927

ABSTRACT:
A computer program product for 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 out changed data for a dataset for which the primary castout owner has had a failure.

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