5.1.1 Dynamic Reconfiguration With Cluster Interconnects

There are a few issues you must consider when completing dynamic reconfiguration (DR) operations on cluster interconnects.

• All of the requirements, procedures, and restrictions that are documented for the Solaris 8 DR feature also apply to Sun Cluster DR support (except for the operating environment quiescence operation). Therefore, review the documentation for the Solaris 8 DR feature before using the DR feature with Sun Cluster software. You should review in particular the issues that affect non-network IO devices during a DR detach operation.

• DR remove operations cannot be performed on active private interconnect interfaces.

• If the DR remove operation would affect an active private interconnect interface, the system rejects the operation and identifies the interface that would be affected by the operation.

• When an interface is replaced on the private interconnect, its state remains the same, avoiding any need for additional Sun Cluster reconfiguration steps.

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Caution -

Sun Cluster requires that each cluster node has at least one functioning path to every other cluster node. Do not disable a private interconnect interface that supports the last path to any cluster node.

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Complete the following procedures in the order indicated when performing DR operations on public network interfaces.

Table 5-2 Task Map: Dynamic Reconfiguration with Public Network Interfaces

Task	For Instructions, Go To...
1. Disable and remove the interface from the active interconnect	"5.1.4 How to Remove Cluster Transport Cables, Transport Adapters, and Transport Junctions"
2. Perform the DR operation on the public network interface.	Sun Enterprise 10000 Dynamic Reconfiguration User Guide and the Sun Enterprise 10000 Dynamic Reconfiguration Reference Manual (from the Solaris 8 on Sun Hardware collection)