XtreemFS is a distributed filesystem designed for storage systems that span the Internet. It allows you to mount an XtreemFS volume from anywhere, given the right permissions. It includes support for POSIX ACLs and extended attributes (xattrs). As an object-based parallel file system, it allows you to stripe files over multiple storage servers for high-performance parallel access with file-specific striping pattern. It can be integrated in X.509-based security infrastructures.