Linux file systems have a number of limitations that make them a poor choice for large and high-performance computing environments. This article explains some of the pros and cons of Linux and old UNIX file systems:
I am frequently asked by potential customers with high I/O requirements if they can use Linux instead of AIX or Solaris.
No one ever asks me about high-performance I/O -- high IOPS (define) or high streaming I/O -- on Windows or NTFS because it isn't possible. Windows and the NTFS file system, which hasn't changed much since it was released almost 10 years ago, can't scale given its current structure. The NTFS file system layout, allocation methodology and structure do not allow it to efficiently support multi-terabyte file systems, much less file systems in the petabyte range, and that's no surprise since it's not Microsoft's target market.
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