PERFORMING A REMOTE POINT-IN-TIME COPY TO A SOURCE AND TARGET STORAGES IN FURTHER MIRROR COPY RELATIONSHIPS

摘要

Provided are a computer program product, system, and method for performing a remote point-in-time copy to a source and target storages in further mirror copy relationships. Each of a plurality of source copy relationships is from the source storage to one corresponding source copy storage. Each of a plurality of target copy relationships is from the target storage to one corresponding target copy storage, where in each relationship an indicator indicates whether to use a remote first type copy operation. The first type copy operation is used to copy data from the source storage to the target storage and copy data from the source copy storage to the target copy storage for the determined source and target copy relationships having the indicator set. A second type of copy operations is used for source and target relationships not having the indicator set.

主权项

1. A computer program product for copying data in a storage computing environment having a plurality of storage servers, wherein the computer program product comprises a computer readable storage medium having program instructions embodied therewith, the program instructions executable by a processor to cause operations, the operations comprising:
establishing a plurality of source copy relationships, wherein each of the source copy relationships is from the source storage to one corresponding source copy storage, wherein data is copied from the source storage to the source copy storages in the copy relationships to provide a mirror copy of data at the source storage at the source copy storages; establishing a plurality of target copy relationships, wherein each of the target copy relationships is from the target storage to one corresponding target copy storage, wherein data is copied from the target storage to the source copy storages to provide a mirror copy at the source copy storages; maintaining, for each of the source and target copy relationships, an indicator indicating whether to use a remote first type copy operation; determining from the indicator the source and target copy relationships indicating to use the remote first type of copy operation; using the first type copy operation to copy data from the source storage to the target storage; using the first type of copy operations to copy data from the source copy storage to the target copy storage for the determined source and target copy relationships having the indicator set to use the remote first type copy operation in response to using the first type copy operation to copy data from the source storage to the target storage; and using a second type of copy operations to copy data from the source storage to the source copy storage and from the target storage to the target copy storage in the source and target relationships having the indicator set to not use the remote first type of copy operation.