I respectfully disagree with the author's conclusion. There are at least two filesystems, intended for situations where several computers share block-level acc

I respectfully disagree with the author's conclusion. There are at least two filesystems, intended for situations where several computers share block-level access to the same disks over Fibre Channel or iSCSI, that are truly cross-platform, allowing volumes to be used, simultaneously if desired, from computers with different operating systems. Quantum's StorNext File System is available for Linux, for Microsoft Windows, and for several UNIX systems, including OS X, where it's bundled with the OS and known as Xsan. SGI's CXFS ("clustered XFS") is similarly compatible. Both of these filesystems are modern, in the author's sense that the filesystem does not impose a practical limit on file or volume sizes.