HAStorage and HAStoragePlus Resource Types (5/02)

The following change was introduced in the Sun Cluster 3.0 5/02 update release and applies to this update and all subsequent updates to Sun Cluster 3.0 software.The resource types HAStorage and the HAStoragePlus can be used to configure the following options.

• Coordinate the boot order of disk devices and resource groups by causing the START methods of the other resources in the same resource group that contains the HAStorage or HAStoragePlus resource to wait until the disk device resources become available

• With AffinityOn set to True, enforce colocation of resource groups and disk device groups on the same node, thus enhancing the performance of disk-intensive data services

In addition, HAStoragePlus is capable of mounting any cluster file system found to be in an unmounted state. See "Planning the Cluster File System Configuration" in the Sun Cluster 3.0 12/01 Data Services Installation and Configuration Guide for more information.

If the device group is switched to another node while the HAStorage or HAStoragePlus resource is online, AffinityOn has no effect and the resource group does not migrate along with the device group. On the other hand, if the resource group is switched to another node, AffinityOn being set to True causes the device group to follow the resource group to the new node.