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What are the disadvantages of Network file system (NFS)?

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58.What are the disadvantages of Network file system (NFS)?
Ans.
1. NFS is sensitive to network congestion/traffic which shows down NFS performance.

 2. Busy disk activity on the NFS server badly affects NFS’s performance.

 3. The performance enhancement incorporated in NFSv4 have increased NFS’s stability and reliability on high latency and heavily congested networks.

 4. If user/client wants to mount some files which is not exported, then client’s system may get hang and this can be resolved with the help of mount option.

 5. Is the disk or system exporting important data or application becomes unavailable, such as a disk crash or server failure, no one can access that resource.

 6. NFS suffers from potential security problems because its designs assure a trusted networks.

 7. The major weakness of most NFS implementation based on protocol’s other versions, that they are based on standard RPC which is unencrypted.

 8. Sensitive information should never be exported from or mounted on systems directly exposed to the internet.

Comments

  1. UnknownAugust 3, 2016 at 9:18 PM

    Many of the security points raised here refer to NFS 3.0; NFS 4.0 (and later) have better security and require encryption of both the user credentials and the data transferred (points #6/7/8).
    Also why is point #3 a disadvantage?

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    Replies
    1. ChrisNashAugust 3, 2016 at 11:01 PM

      #3 is on Disadvantage of older versions of NFS over newer versions and the answer is abstract over all NFS versions its not version specific that's why i didn't mention version in question. i agree most of the points are centred at older version but newer versions are not flawless either.

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