Volume Managers

The SunPlex system uses volume management software to increase the availability of data by using mirrors and hot spare disks, and to handle disk failures and replacements.

The SunPlex system does not have its own internal volume manager component, but relies on the following volume managers:

• Solstice DiskSuite

• VERITAS Volume Manager

Volume management software in the cluster provides support for:

• Failover handling of node failures

• Multipath support from different nodes

• Remote transparent access to disk device groups

When volume management objects come under the control of the cluster, they become disk device groups. For information about volume managers, refer to your volume manager software documentation.

An important consideration when planning your disksets or disk groups is to understand how their associated disk device groups are associated with the application resources (data) within the cluster. Refer to the Sun Cluster 3.0 12/01 Software Installation Guide and the Sun Cluster 3.0 12/01 Data Services Installation and Configuration Guide for discussions of these issues.