METHOD, SYSTEM AND PROGRAM FOR FORMING A CONSISTENCY GROUP

METHOD, SYSTEM AND PROGRAM FOR FORMING A CONSISTENCY GROUP

Provided are a method, system, and program for forming a consistency group of data. Information is provided on a consistency group relationship indicating a plurality of slave controllers and, for each indicated slave controller, a slave storage unit managed by the slave controller. A command is tra...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: LIN EDWARD H, SPEAR GAIL A, BARTFAI ROBERT F, ZLOTNICK AVIAD, GLUCK OLYMPIA, JARVIS THOMAS C, WERNER SAM C, FACTOR MICHAEL E, MICKA WILLIAM F
Format: Patent
Sprache:eng
Schlagworte:
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Beschreibung
Zusammenfassung:Provided are a method, system, and program for forming a consistency group of data. Information is provided on a consistency group relationship indicating a plurality of slave controllers and, for each indicated slave controller, a slave storage unit managed by the slave controller. A command is transmitted to each slave controller in the consistency group relationship to cause each slave controller to transmit data in the slave storage unit to a remote storage in a manner that forms the consistency group. A determination is made as to whether all the slave controllers successfully transmitted the data in the slave storage units that is part of the consistency group to the remote storage.