Installation guide

C H A P T E R 1 0 Configuration for Clustering
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Cluster across Boxes — This type of cluster also consists of virtual machines. The
virtual disks are stored on real shared disks, so all virtual machines can access them.
Using this type of cluster, you can deal with the crash of a physical machine.
A four-node cluster using two physical machines; each node is running clustering software.
Consolidating Clusters — This type of cluster combines features of the previous
two types. For example, you can consolidate four clusters of two machines each to
two physical machines with four virtual machines each. This provides protection from
both hardware and software failures.
Four two-node clusters moved from eight physical machines to two.
Cluster
software
Cluster
software
Cluster
software
Cluster
software
Requests
.dsk
Physical machine
Virtual
machine
Virtual
machine
Virtual
machine
Virtual
machine
Physical machine
Physical
machine
VM1
VM7
VM5
VM3
Physical
machine
VM2
VM8
VM6
VM4
1
8
6
4
2
7
5
3