Novell BUSINESS CONTINUITY CLUSTERING 1.1 SP1 - 9-21-2010 ADMINISTRATION GUIDE FOR OPEN ENTERPRISE SERVER 1 SP2 LINUX Administration Manual page 15

Two-Site Business Continuity Cluster
Figure 1-3
Building A
Ethernet Switch
Server Server Server
1A 2A 3A
Fibre Channel
Switch
Fibre Channel
Disk Arrays
Cluster Site 1
Multiple-Site Business Continuity Cluster Solution
This is a large Business Continuity Cluster solution capable of supporting up to 32 nodes per site
and more than two sites. Services and applications can do fan-out failover between sites. Replication
of data blocks is typically done by SAN vendors, but can be done by host-based mirroring for
synchronous replication over short distances. The illustration below depicts a four-site business
continuity cluster.
Two independent clusters at
geographically separate sites
WAN
eDirectory
DirXML
Server
4A
SAN
Disk blocks
Building B
Ethernet Switch
Server Server Server
1B 2B 3B
Fibre Channel
Switch
Fibre Channel
Disk Arrays
Cluster Site 2
Server
4B
Overview 15