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Should I use TCP or UDP as a network transport protocol for NFS in RHEL 4, 5, 6 and 7?

Solution Verified - Updated 2016-03-10T14:56:05+00:00 -

Issue

Should I use TCP or UDP as a network transport protocol for NFS?
Should I use UDP for NFS4?

Environment

Red Hat Enterprise Linux 4
Red Hat Enterprise Linux 5
Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 7

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