Sun Cluster Data Services Planning and Administration Guide for Solaris OS

Data Services That Are Disk Intensive

Some data services, such as Sun Cluster HA for Oracle and Sun Cluster HA for NFS are disk intensive. If your data service is disk intensive, ensure that the resource groups and disk device groups are colocated on the same node. To meet this requirement, perform the following tasks.

Note –

The failback settings must be identical for both the resource group and device groups.

Some data services are not disk intensive. For example, Sun Cluster HA for DNS, which reads all of its files at startup, is not disk intensive. If your data service is not disk intensive, configuring the HAStorage resource type or HAStoragePlus resource type is optional.