Understanding and Designing Serviceguard Disaster Recovery Architectures

Support for all Metrocluster products
The SADTA feature is available in all Metrocluster products. This means disaster recovery for
complex workloads can be configured when using Metrocluster with Continuous Access P9000
and XP or Metrocluster with Continuous Access EVA or Metrocluster with 3PAR Remote Copy or
Metrocluster with EMC SRDF.
UnderstandingThree Data Center Disaster Recovery Solution
A Three Data Center configuration consists of two Serviceguard clusters. The first cluster, which is
a Metrocluster, has two data centers that make up the Primary data center (Data Center 1) and
Secondary data center (Data Center 2). The second cluster, typically located at a long distance
from the Metrocluster sites, is the Third Data Center (Data Center 3); it is configured as a recovery
cluster. These two clusters are configured as Continentalclusters, as shown in Figure 18
Figure 18 Three Data Center Disaster Recovery Architecture
Metrocluster Region
Serviceguard
Cluster
Region
CANL link
Continentalcluster Region
Data Center 1
VOL
JNL
Data Center 2 Data Center 3
ICAP
Converter
FC/IP
Converter
ICAP
Converter
FC/IP
Converter
DWDM
P9000/XP
Integrity
Superdome
Integrity
Superdome
Integrity
Superdome
P9000/XP P9000/XP
DWDM
VOL
VOL
JNL
SG Heartbeat
and
CA-Sync link
This provides bi-directional automatic failover across sites within a Metrocluster and fully automated
push-button recovery mechanism at the far site. The Metrocluster recovery acts as the near DR
solution and the Continentalclusters recovery acts as the far DR solution.
NOTE: This solution is integrated only with HP XPand P9000 Storage. See Building Disaster
Recovery Serviceguard Solutions Using Metrocluster with Continuous Access for P9000 and XP
A.11.00 available at http://www.hp.com/go/hpux-serviceguard-docs for information on the
features supported and the steps to configure this solution.
Understanding Virtualized Environments configured in Metrocluster or
Continentalclusters
Configuring HP-UX Virtual Partitions (vPar) or Integrity Virtual Machine (Integrity VM) as a
Serviceguard package or a Serviceguard node, in Metrocluster or Continentalclusters provides for
remote data protection of applications running inside the virtualized environment. This setup protects
the virtualized environments from disasters that result in the failure of an entire data center.
UnderstandingThree Data Center Disaster Recovery Solution 41