Understanding and Designing Serviceguard Disaster Recovery Architectures

Table 7 Comparison of disaster recovery Cluster Solutions (continued)
ContinentalclustersMetroclusterExtended Distance Cluster
for RAC
Extended Distance
Cluster
Attributes
Continuous Access over
IP (pre-integrated
solution)
Continuous Access over
ATM (pre-integrated
solution)
Two configurations:Single IP Subnet (requires
a common subnet for all
Single IP subnetCross Subnet for all
cluster notes if the
Cluster
Network
Single IP subnet for
both clusters (LAN
cluster nodes), except for
Cross-Subnet clusters.
Cross Subnet feature
is not used or not
available.
connection between
clusters)
¹ Serviceguard
versions supporting
Two IP subnets – one
per cluster (WAN
the Cross Subnet
connection between
clusters)
feature do not require
a common subnet for
all cluster nodes.
Serviceguard+Serviceguard+Serviceguard+Serviceguard (no other
clustering SW is
required).
Disaster
recovery
Solutions
Continentalclusters +
(Metrocluster
Continuous Access XP
or
Metrocluster with
Continuous Access for
P9000 and XP
or
SGeRAC
Software
Licenses
Required
Metrocluster Continuous
Access EVA
Metrocluster Continuous
Access EVA
oror
Metrocluster EMC SRDFMetrocluster 3PAR Remote
Copy
or
or
Toolkits for Data
Replication solutions)Metrocluster EMC SRDF
or
Toolkits for Data
Replication solutions)
or
Customer-selected data
replication subsystem
CC with RAC:
Serviceguard+
SGeRAC + CVM/CFS
+ Continentalclusters
NOTE: More information is available in the HP Configuration Guide (available through your
HP representative).
For the most up-to-date support and compatibility information see the SGeRAC for SLVM, CVM
and CFS Matrix and Serviceguard Compatibility and Feature Matrix on http://www.hp.com/go/
hpux-serviceguard-docs -> HP Serviceguard Extension for RAC.
1–The Cross Subnet feature is enabled beginning with Serviceguard A.11.18 and with the
appropriate patches.
72 Comparison of Disaster Recovery Solutions