IBM DS8880 Series Introduction And Planning Manual page 80

v The size limit for volumes or extents in a Copy Service relationship is 2 TB.
v Thin provisioning functions in open-system environments are supported for the
v PPRC supports any intermix of T10-protected or standard volumes. FlashCopy
v PPRC supports copying from standard volumes to ESE volumes, or ESE
The following Copy Services functions are available as optional features:
v Point-in-time copy, which includes IBM FlashCopy.
v Remote mirror and copy, which includes the following functions:
v Remote mirror and copy for IBM Z environments, which includes z/OS Global
Note: When FlashCopy is used on FB (open) volumes, the source and the target
volumes must have the same protection type of either T10 DIF or standard.
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DS8880 Introduction and Planning Guide
following Copy Services functions:
– FlashCopy relationships
– Global Mirror relationships if the Global Copy A and B volumes are Extent
Space Efficient (ESE) volumes. The FlashCopy target volume (Volume C) in
the Global Mirror relationship can be an ESE volume or standard volume.
does not support intermix.
volumes to Standard volumes, to allow migration with PPRC failover when both
source and target volumes are on a DS8000 version 8.2 or higher.
The FlashCopy function allows you to make point-in-time, full volume copies of
data so that the copies are immediately available for read or write access. In IBM
Z environments, you can also use the FlashCopy function to perform data set
level copies of your data.
– Metro Mirror
Metro Mirror provides real-time mirroring of logical volumes between two
storage system that can be located up to 300 km from each other. It is a
synchronous copy solution where write operations are completed on both
copies (local and remote site) before they are considered to be done.
– Global Copy
Global Copy is a nonsynchronous long-distance copy function where
incremental updates are sent from the local to the remote site on a periodic
basis.
– Global Mirror
Global Mirror is a long-distance remote copy function across two sites by
using asynchronous technology. Global Mirror processing is designed to
provide support for unlimited distance between the local and remote sites,
with the distance typically limited only by the capabilities of the network and
the channel extension technology.
– Metro/Global Mirror (a combination of Metro Mirror and Global Mirror)
Metro/Global Mirror is a three-site remote copy solution. It uses synchronous
replication to mirror data between a local site and an intermediate site, and
asynchronous replication to mirror data from an intermediate site to a remote
site.
– Multiple Target PPRC
Multiple Target PPRC builds and extends the capabilities of Metro Mirror and
Global Mirror. It allows data to be mirrored from a single primary site to two
secondary sites simultaneously. You can define any of the sites as the primary
site and then run Metro Mirror replication from the primary site to either of
the other sites individually or both sites simultaneously.
Mirror.