[Linux-cluster] NFS clustering, with SAN

[Jonathan Horne]

greetings, i am new to this list, my apologies if this topic has been touched on before (but so far searching has not yielded a direction for me to follow)

i have 2 servers that share a file system over SAN.  both servers export this file system as a NFS share.  i need to implement some sort of clustering so that if one server goes down, clients dont lose their connection to the exported file system.  im hoping to find some implementation that will have a pretty instantaneous failover, as there will be pretty constant filewrites/reads from multiple client servers.

can i please get some recommendations on what i should research to make this happen? ill gladly accept tips, or documents to read, i can work with either.

thanks,
Jonathan