Interesting benchmark - FlexTk Performance: NAS Performance Comparison:
An operating system for your NAS server should be selected according to your own file access patterns. If you are expecting to perform lots of file write operations, use a Linux-based OS or Open Solaris. If you need more performance for file read operations, use a Windows-based server OS. Finally, if your need a NAS device with a balanced performance for all types of operations use Open Solaris.
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