P. Larry Nelson wrote: > From what I've gleaned about the two protocols from googling, it appears > that TCP has advantages on a lossy network but that's not our scenario. > It also is not a stateless protocol, like UDP, so if a server crashes in > the middle of a packet transmission, the client will hang and filesystems > will need to be unmounted and remounted. So it would seem UDP is better, > at least in our case. See the famous Why NFS Sucks [1] paper, section 4, to see why you should switch to TCP. In short, silent data corruption can happen pretty easily with NFS over UDP. Being able to kill processes waiting on a stuck NFS file handle has nothing to do with TCP, but with "intr" mount option. Cheers, -jkt [1] http://www.cc.gatech.edu/classes/AY2007/cs4210_fall/papers/nfsOLS.pdf