About Veritas Cluster Server in a Logical Domain environment


About Veritas Cluster Server in a Logical Domain environment
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Veritas Cluster Server (VCS) 5.1 (or VCS 5.0 MP3 RP1 and later releases) provides high availability (HA) for a Sun Microsystems Logical Domain (LDom). You can configure VCS to monitor the complete LDom, its components, and the applications that run in LDom, or to monitor only the applications that run in LDom.

See About Veritas Cluster Server configuration models in a Logical Domain environment.

Table: Veritas Cluster Server failover options for Logical Domain failure lists the failure scenarios and the VCS failover options based on which you can plan your VCS configuration in an LDom environment.

Table: Veritas Cluster Server failover options for Logical Domain failure

Failure scenario	VCS failover	Typical VCS configuration
LDoms, their storage, or switches fail	VCS fails over the LDom from one node to the LDom on another node	VCS is installed in the control domain of each node. See Veritas Cluster Server setup to fail over a Logical Domain on a failure.
LDoms, their storage, or switches fail Or Applications that run in LDoms fail	VCS fails over the LDom from one node to the LDom on another node. The application starts on the same LDom after the LDom failover.	VCS is installed in the control domain of each node, and single node VCS is installed on each guest domain. See Veritas Cluster Server setup to fail over a Logical Domain on a failure.
Applications that run in LDoms fail Or LDom where the application is running fails	VCS fails over the application from one LDom to another.	VCS is installed in the guest domain of each node. See Veritas Cluster Server setup to fail over an application on a failure.

Failure scenario

VCS failover

Typical VCS configuration

LDoms, their storage, or switches fail

VCS fails over the LDom from one node to the LDom on another node

VCS is installed in the control domain of each node.

See Veritas Cluster Server setup to fail over a Logical Domain on a failure.

LDoms, their storage, or switches fail

Applications that run in LDoms fail

VCS fails over the LDom from one node to the LDom on another node.

The application starts on the same LDom after the LDom failover.

VCS is installed in the control domain of each node, and single node VCS is installed on each guest domain.

See Veritas Cluster Server setup to fail over a Logical Domain on a failure.

Applications that run in LDoms fail

LDom where the application is running fails

VCS fails over the application from one LDom to another.

VCS is installed in the guest domain of each node.

See Veritas Cluster Server setup to fail over an application on a failure.