SQL Server versions 2000–2008 support extents of up to 64 KB Multi-Programming Executive a filesystem by Hewlett-Packard NTFS OCFS2 Oracle Cluster File System a shared-disk file system for Linux Reiser4 Linux filesystem (in "extents" mode) SINTRAN III file system used by early computer company Norsk Data UDF Universal Disk Format standard for optical media VERITAS File System enabled via the pre-allocation API and CLI XFS SGI's second-generation file system for Irix and Linux See also Comparison of file systems References External links Getting to know the Solaris filesystem, Part 1: Allocation and storage strategy a comparison of block-based and extent-based allocation Computer file systems