Review the following points to determine whether you might configure swap space on a network-connected disk, such as in a SAN environment:
Diagnosing swap space issues on a locally-attached disk is easier than diagnosing swap space issues on a network-connected disk.
The performance of swap space over a SAN should be comparable to swap space configured on a locally-attached disk.
Adding more memory to a system with performance issues, after analyzing performance data, might resolve a swap over SAN performance problem better than moving the swap to a locally-attached disk.