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10 gigabit ethernet

We would like to speed up NFS traffic between a file server (FreeBSD with 
ZFS) and a compute server (Linux) and wondered if 10 gigabit ethernet was 
a reasonable approach. Can anyone report experience? Currently it appears 
that NFS traffic saturates a 1 gigabit/second link, whereas local access 
to files is several times as fast.

We understand that "ganging" several 1 gig ethernet ports won't speed up a 
single connection, only allow multiple 1 gig connections. That won't help 
us, since we typically would only have one (large) file open on the 
server. Is that right?

Where would I look for 10 gigabit NICs compatible with that hardware? 
Vendor names?

Thank you

Daniel Feenberg
Cambridge MA

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