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(Veritas) What the APM is

The APM is a kernel module that defines I/O error handling, failover path selection, and other failover behavior for a specific array.

The NetApp APM is customized to optimize I/O error handling and failover path selection for the NetApp environment. After the ASL discovers the storage array as a NetApp array, the ASL instructs VxDMP to use the NetApp APM to handle I/O error processing and path failures for the NetApp storage array.