Sun Cluster 3.1 Data Service Planning and Administration Guide

Understanding HAStorage and HAStoragePlus

The HAStorage and the HAStoragePlus resource types can be used to configure the following options.

In addition, HAStoragePlus is capable of mounting any global file system found to be in an unmounted state. See Planning the Cluster File System Configuration for more information.

Note –

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.

See Synchronizing the Startups Between Resource Groups and Disk Device Groups for information about the relationship between disk device groups and resource groups. The SUNW.HAStorage(5) and SUNW.HAStoragePlus(5) man pages provides additional details.

See Enabling Highly Available Local File Systems for procedures for mounting of file systems such as VxFS in a local mode. The SUNW.HAStoragePlus(5) man page provides additional details.

Determining Whether Your Data Service Requires HAStorage or HAStoragePlus

Choosing Between HAStorage and HAStoragePlus

To determine whether to create HAStorage or HAStoragePlus resources within a data service resource group, consider the following criteria.