Changing the Primary Adapter

Changing the Primary Adapter

One of the adapters in a cluster is considered the primary adapter. By default, this is the adapter with the higher SSA Unique ID. The performance of I/O operations to RAID-1 arrays is:

Highest when the server that contains the primary adapter originates all the I/O operations
Lowest when the server that contains the non-primary adapter originates all the I/O operations.

To improve the performance of your system, you might choose to make the other adapter in the cluster the primary adapter.

To change the primary adapter:

From the SSA Main Menu, select SSA Adapter List.
A window opens containing a list of the SSA adapters in the pair of clustered systems on which you are working:

Put the cursor against the adapter that is to become the primary adapter, and press F2.

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