Performance of HDF5 on NFS or gluster

Hi,

Common sense tells me that HDF5 may have poor performance on NFS
(sqlite3 has performance on NFS). Also, I guess HDF5 may also have
poor performance on gluster (http://www.gluster.org/).

I'm wondering whether my guess is correct. Could any expert confirm
the performance of HDF5 on NFS and gluster? Thanks!

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Regards,
Peng