file system type

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http://ubuntuforums.org – Any suggestions on what filesytem is good at handling the following scenario? * nfs file server with large number(1,000,000 files in a directory) of small files(less than 4kb) * nfs file server with small number of large files(21GB minimum) I have used ext4 and XFS with the default parameters. Will I gain any significant improvements (both read and write, but mostly write) by modifying mount options? Or should I look for other filesystem types? Thanks! (Hardware)