Describe some of the fundamental differences between AFS and NFS
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Some of the distinctive differences include:
AFS has a rich setof features whereas NFS is organized around a
much simpler design.
NFS allows a workstation to act as either a client,a server,or both.
AFS distinguishes between clients and server and identifies dedicated servers.
NFS is stateless meaning a server does not maintain state during chient updates of a file.AFS is stateful between the period of when aclient opensa file,updates it,and closes the file.(NFS does not even allow the opening and closing of files.)
Caching is a fundamental feature of AFS allowing client-side caching with *** consistency.In fact,it is an architectural principle behind AFS to allow clients to *** entire files.Consistency is provided by servers when ***d fles are closed.The erver then invalidates ***d copies existing on other chients.Caching is allowed in NFS as well,but because of its stateless nature modified data must be committed to the server before results are received back by the client.
AFS provides session semantics whereas NFS supports UNIX file consistency semantics.