Application servers require fault-tolerant shared storage in order to facilitate initiated and uninitiated shutdowns. Organizations must choose a shared storage solution and will need to implement the shared storage API to integrate with PRPC. PRPC supports shared storage using NFS or shared disk out of the box, but these solutions are not inherently fault tolerant. PRPC servers require read/write access to shared storage for disk-oriented solutions. "
The bit I am looking for some info on is what is the shared storage API? I did a few searches around PDN but couldnt find anything on it.
Has anyone else done a HA deployment, or jsut used NFS?