ESTABLISHING A POINT-IN-TIME COPY RELATIONSHIP BETWEEN SOURCE LOGICAL ADDRESSES AND TARGET LOGICAL ADDRESSES

ESTABLISHING A POINT-IN-TIME COPY RELATIONSHIP BETWEEN SOURCE LOGICAL ADDRESSES AND TARGET LOGICAL ADDRESSES

Provided are a computer program product, system, and method for establishing a point-in-time copy relationship between source logical addresses and target logical addresses. A point-in-time (PiT) copy establish command specifies a source set comprising a subset of source logical addresses in at leas...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: MELLGREN CAROL S, SABA RAUL E, MINCH JARED M, BROWN THERESA M, FRANCISCO NEDLAYA Y
Format: Patent
Sprache:eng
Schlagworte:
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Beschreibung
Zusammenfassung:Provided are a computer program product, system, and method for establishing a point-in-time copy relationship between source logical addresses and target logical addresses. A point-in-time (PiT) copy establish command specifies a source set comprising a subset of source logical addresses in at least one storage and a target set comprising a subset of target logical addresses in the at least one storage. The source set of source logical addresses are copied to the target set of target logical addresses. The source logical addresses map to source tracks and wherein the target logical addresses map to target tracks. Copy information is generated indicating whether the source logical addresses in the source set have been copied to the target set. Complete is returned to the PiT copy establish command after generating the copy information and before copying all the source logical addresses to the target logical addresses.