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470 IBM System Storage DS6000 Series: Copy Services with IBM System z
Note that TPC for Replication does not support Global Copy.
Figure 31-2 is a screen capture from the TPC for Replication GUI, showing the different
session types, or Copy Services functions, supported.
Figure 31-2 Management of Copy Services functions supported by TPC for Replication
TPC for Replication is designed to simplify management of Copy Services by:
Automating administration and configuration of Copy Services functions with
wizard-based session and copy set definitions.
Providing simple operational control of Copy Services tasks, which includes starting,
suspending, and resuming Copy Services tasks.
Offering tools to monitor and manage Copy Services sessions.
Note that TPC for Replication also manages FlashCopy and Metro Mirror for IBM SAN
Volume Controller, SVC.
31.4 Copy Services terminology
Although it is covered in a previous part of this book, we have included here, for convenience
and to keep it in context with TPC for Replication, a brief review of Copy Services
terminology.
31.4.1 FlashCopy
FlashCopy is a point-in-time copy of a source volume mapped to a target volume. It offers
various options including the choice between a COPY option, for a background copy through
physical I/O operations in the storage server back-end, or a NOCOPY option.
FlashCopy is available on the DS6000 and DS8000 as well as on the ESS 800. FlashCopy is
also available on the DS4000 family and with SAN Volume Controller. Note, however, that the
DS400 and SVC use different implementations of the FlashCopy function that are not
compatible with the DS6000. DS8000, and ESS 800 FlashCopy.