Copy Services

These topics include reference information for Copy Services.

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. There are, however, constraints as to how these functions can be used together.
Valid combinations of virtualization, FlashCopy, and Metro Mirror features
The following table outlines the virtualization features that are supported with specific FlashCopy and Metro Mirror functions.
Interaction of one virtualization feature with another virtualization feature
This topic contains tables that list the virtualization features that can be used in combination.
Thin-provisioned FlashCopy
You can have a mix of thin-provisioned and fully allocated volumes in FlashCopy^® mappings. One common combination is a fully allocated source with a thin-provisioned target, which enables the target to consume a smaller amount of real storage than the source.
Grains and the FlashCopy bitmap
When data is copied between volumes, it is copied in units of address space known as grains.
FlashCopy mapping events
FlashCopy mapping events detail the events that modify the state of a FlashCopy mapping.

Parent topic: Reference