Continentalclusters Version A.08.00 Release Notes, April2011 (5900-1485)

• “Support for Data Replication Storage Failover Preview in a 3DC DR Solution”
(page 9)
• “Support for Disaster Recovery Rehearsal Operations in a 3DC DR Solution”
(page 9)
Support for Three Data Center (3DC) Continuous Access Journal (CAJ) Replication Between Sites
in a 3DC Disaster Recovery (DR) Solution
With the introduction of the following patches, the HP StorageWorks XP 3DC CAJ/CAJ
replication is supported in a 3DC DR Solution:
• Continentalclusters A.08.00 April 2011 patches (PHSS_41657 on 11i v2 and
PHSS_41658 on 11i v3)
• Metrocluster with Continuous Access for P9000 and XP A.11.00 April 2011 patches
(PHSS_41663 on 11i v2 and PHSS_41664 on 11i v3)
• Metrocluster Data Replication Enabler Toolkit A.10.00 April 2011 patches
(PHSS_41655 on 11i v2 and PHSS_41656 on 11i v3)
In a 3DC CAJ/CAJ, an asynchronous replication is configured using Continuous Access
Journal replication between the sites in a Metrocluster, and the replication between the
sites of that Metrocluster and the third site, where the recovery cluster is configured. For
many mission critical application environments, high or peak workloads must be sustained
and unless sufficient intersite bandwidth is available for synchronous replication,
applications performance can suffer. The use of Continuous Access Journal asynchronous
replication can mitigate this, and often costs less to provision. This feature is supported
on Serviceguard versions A.11.19 and A.11.20. It does not require Serviceguard
A.11.20 April 2011 patch PHSS_41628.
For more information on 3DC DR Solution using 3DC CAJ/CAJ replication, see Designing
Disaster Recovery HA Clusters Using Metrocluster and Continentalclusters, April 2011
(5900-1484) available at http://www.hp.com/go/hpux-serviceguard-docs —> HP
Serviceguard Continentalclusters.
Support for Three Links and Delta Resync functionality in a 3DC DR Solution
With the introduction of the following patches, the HP StorageWorks 3DC replication
with Three Links and Delta Resync functionality is supported in a 3DC DR Solution:
• Continentalclusters A.08.00 April 2011 patches (PHSS_41657 on 11i v2 and
PHSS_41658 on 11i v3)
• Metrocluster with Continuous Access for P9000 and XP A.11.00 April 2011 patches
(PHSS_41663 on 11i v2 and PHSS_41664 on 11i v3)
• Metrocluster Data Replication Enabler Toolkit A.10.00 April 2011 patches
(PHSS_41655 on 11i v2 and PHSS_41656 on 11i v3)
In a three link (tri-link) configuration, three continuous access replication links are
configured between the three data centers. A replication link is configured between Site
What’s In This Version 7