You
can have both the FlashCopy® function
and either Metro Mirror or Global Mirror operating
concurrently on the same volume. There are, however, 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, which are:
- 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.