Part 1 overview, Part 1. overview, Overview – IBM DS6000 User Manual

Page 25: Part 1

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Part

Overview

In Part 1 we describe the various Advanced Copy Services offerings for the IBM System
Storage DS6000 series and how they relate to previous Copy Services offerings that are
available on the Enterprise Storage Server® (ESS).

This part also shows how the existing Copy Services functions from the ESS can coexist with
the Copy Services for the DS6000 series. Similarly, we discuss their use with the DS8000
series Copy Services.

With the announcement of the DS6000 Series and of Advanced Copy Services for z/OS on
the DS6000 Series, we have introduced some new terminology. We also introduced these
terms for Advanced Copy Services Version 2 for the ESS. These terms are described in detail
in IBM System Storage DS6000 Series: Architecture and Implementation, SG24-6781, and
are summarized in Table 1.

Table 1 Reference chart for DS Copy Services on DS6000.

Part 1

DS6000 Function

ESS800 Version 2 Function

Formerly known as

FlashCopy®

FlashCopy

Global Mirror

Asynchronous PPRC

Metro Mirror

Synchronous PPRC

Global Copy

PPRC Extended Distance

z/OS Global Mirror

Extended Remote Copy (XRC)

Metro/Global Mirror for System
z, 3-site solution as an XRC
target only

z/OS Metro/Global Mirror

3-site solution using Sync
PPRC and XRC

Metro/Global Copy

2- or 3-site Asynchronous
Cascading PPRC

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