EMC Symmetrix DMX-3 User Manual

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EMC Symmetrix DMX-3 Product Guide
Mainframe Features and Support
Figure 54 PPRC and GDPS support
XRC support
Enginuity level 5772 supports IBM’s XRC, level 3 functionality. IBM
designed XRC as a host-based disaster recovery and workload
migration solution that provides asynchronous copying of zSeries
data to a remote data center.
With XRC, a remote site has a point-in-time copy of the
source/primary data with the following attributes:
◆ The copy at the remote site is not the most current one; there is a
lag between the local and remote copies.
◆ The remote copy’s data is re-startable.
◆ Since this is an asynchronous solution, write operations do not
suffer from performance degradation while transferring the data
across the link.
XRC provides update sequence integrity through its mechanism of
consistency groups, and journal, control, and state data sets. The
basic concept is that the System Data Mover (SDM) polls, or receives
attention interrupts from, the primary control units it is servicing and
retrieves from them all new or updated records.
SRDF
SRDF
Primary site
Recovery site
Automated site failover via
compiled REXX “Scripts”
Symmetrix Fully PPRC
Command Compliant
Automated site failover
compiled REXX “Scripts”
Symmetrix PPRC
Command Compatibility
SYM-000092
R1
R1
PPRC commands
converted to SRDF
PPRC commands
converted to SRDF
PPRC commands
converted to SRDF
PPRC commands
converted to SRDF
R1
R1
R2
R2
R2
R2

EMC Symmetrix DMX-3 Specifications

General

Brand	EMC
Model	Symmetrix DMX-3
Category	Storage
Language	English