HP 3PAR StoreServ Cluster Extension Software Administrator Guide

Figure 8 HP 3PAR 3DC configuration
HP 3PAR StoreServ Cluster Extension support for 3PAR 3DC environment includes:
• Automated failover and failback capability between two data centers DC-A and DC-B that
are connected with synchronous replication mode.
• On failover or failback of the 3PAR RC volume group, CLX initiates the delta sync of the data
from the current primary data center to the remote data center.
• In the disaster event of both primary and secondary data centers, see HP 3PAR StoreServ
Cluster Extension solution for HP 3PAR StoreServ 3DC environment white paper for the manual
steps that must be followed to move the applications to the remote data center.
• Support for both 2DC and 3DC RC volume group configurations in SLD (3DC) environment
without any additional CLX configuration changes.
Figure 9 (page 82) displays the CLX support for failover and failback between primary and
secondary data centers in an HP 3PAR 3DC environment.
HP 3PAR 3DC (3 Datacenter) environment 81