IBM DS8000 Copy Services: Updated for IBM DS8000 Release 9.1

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How z/OS Global Mirror maintains consistency

This chapter describes the characteristics of time stamping and z/OS Global Mirror (zGM) consistency group formation processing.

Important: The IBM DS8900F family will be the last platform to support z/OS Global Mirror. There will not be any new z/OS Global Mirror functions provided with IBM DS8900F. Therefore, we have not updated the information in this edition. Please refer to IBM Announcement Letter 920-001.

This chapter includes the following topics:

•25.1, “Consistency group” on page 326

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