Using Serviceguard Extension for RAC, 10th Edition, April 2013

and Package 2 disk. Oracle instance 2 now handles all database access, since instance 1 has
gone down.
Figure 4 After Node Failure
In the above figure, pkg1 and pkg2 are not instance packages. They are shown to illustrate the
movement of the packages.
Larger Clusters
Serviceguard Extension for RAC supports clusters of up to 16 nodes. The actual cluster size is
limited by the type of storage and the type of volume manager used.
Up to Four Nodes with SCSI Storage
You can configure up to four nodes using a shared F/W SCSI bus; for more than four nodes,
FibreChannel must be used. An example of a four-node RAC cluster appears in the following figure.
Larger Clusters 21