The NTFS-3G driver is a both freely and commercially available and supported read/write NTFS driver for Linux, FreeBSD, Mac OS X, NetBSD, Solaris, Haiku, and other operating systems. It provides safe and fast handling of the Windows XP, Windows Server 2003, Windows 2000 and Windows Vista file systems. POSIX file system operations are supported, and full file ownership and permission support is available as well.
This the Chiron Filesystem. It is a Fuse based filesystem. It's main purpose is to guarantee filesystem availability using replication. But it isn't a RAID implementation. RAID replicates DEVICES not FILESYSTEMS.