Valid combinations of FlashCopy and Metro Mirror or Global Mirror functions
You can have both the FlashCopy® function and either Metro Mirror or Global Mirror operating concurrently on the same volume. However, you must observe the following constraints as to how these functions can be used together.
The descriptions for the mkrcrelationship, mkfcmap, startfcmap, startfcconsistgrp, startrcrelationship, and startrcconsistgrp command-line interface (CLI) commands include information about the constraints. The following list describes the constraints:
- A FlashCopy mapping must be in the idle_copied state when its target volume is the secondary volume of a Metro Mirror or Global Mirror relationship.
- A FlashCopy mapping cannot be manipulated to change the contents of the target volume of that mapping when the target volume is the primary volume of a Metro Mirror or Global Mirror relationship that is actively mirroring.
- The I/O group for the FlashCopy mappings must be the same as the I/O group for the FlashCopy target volume.