Nfs files not updating
Of even greater importance is the affect on programs.
Programs often do not expect time difference like this, and may end abnormally or behave strangely, as various tasks timeout instantly, or take extraordinarily long while to timeout.
There are currently two versions (versions 2 and 3), which are documented in various IETF RFC's (these are not IETF standards, merely informational documents), and another version currently being standardized (version 4).
NFS is intended to allow a computer to access files over a network as if they were on a local disk.
Poor time synchronization also makes debugging problems difficult, because there is no easy way to establish a chronology of events.
Any combination of imports and mounts is possible, with clients able to mount multiple exports from multiple servers, servers exporting multiple directories to multiple clients, and hosts that act as both clients and servers.
This means that the server does not keep any information about the clients using it.
The advantage of this is that there is no additional burden placed on the server for additional clients (except for any load incurred by actual data transfer).
NFS is built on the Remote Procedure Call (RPC) mechanism, making it a stateless protocol.
In fact, NFS is not stateless from the client point of view, but it is from the server point of view.