Journaled 64-bit file system, with guaranteed file system consistency

Available as a layered product on all systems which run IRIX 5.3 or later, except IP4 and IP6 platforms

Designed to scale to 9 million TB with current hardware supporting scalability to 8000 TB on IRIX. Linux-64, 2 TB Max File Size. Solaris and Windows NT undergoing scalability testing.

Designed to scale to 18 million TB with current hardware supporting scalability to 8000 TB on IRIX. Linux-64, 500 file systems of 2 TB each. Solaris and Windows NT undergoing scalability testing.

Selectable at file system creation time using mkfs_512, 512 bytes to 64KB for normal data, and up to 1MB for real-time data. File system extents (contiguous data) are configurableat file creation time using fcntl and are multiples of the file system block size

NFS Compatibility Using NFS 5.3, 64-bit file systems can be exported to other systems which support the NFS V3 Protocol Systems which use NFS V2 protocol may access XFS file systems within the 32-bit limit imposed by the protocol

EFS and XFS filesystems can be active on a single computer system

1. Restore can restore EFS dumps to either EFS or XFS file systems

2. xfs_restore can restore XFS dumps to either XFS or EFS file systems

3. EFS file systems are dumped in EFS format, XFS file systems are dumped in XFS format

4. Dumps of active XFS file systems are possible

Data Management API (DMIG) allows implementation of hierachial storage management software with no kernal modifications as well as high-performance dump programs without requiring "raw" access to the disk and knowledge of filesystem structures.

Hard and soft guarantees are supported, hard guarantees require turning off disk-drive self diagnostics Guarantees are expressed as a file descriptor, data rate, duration, and start time

Superior to EFS

32MB recommended

Guaranteed I/O for more than 4 streams