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GPFS (General Parallel File System, brand name IBM Storage Scale and previously IBM Spectrum Scale) [1] is a high-performance clustered file system software developed by IBM. It can be deployed in shared-disk or shared-nothing distributed parallel modes, or a combination of these.
File system Stores file owner POSIX file permissions Creation timestamps Last access/ read timestamps Last metadata change timestamps Last archive timestamps Access control lists
It lacked support for snapshots. It was removed from FreeBSD and OpenBSD, but still lives on in NetBSD. Plan 9's Fossil file system is also log-structured and supports snapshots. NILFS is a log-structured file system implementation for Linux by NTT/Verio which supports snapshots.
General Parallel File System (GPFS) IBM: Proprietary: Linux, Windows and AIX A POSIX-compliant, high-performance, parallel filesystem. Support synchronous replication between attached block storage, and asynchronous replication to remote filesystems. Also support erasure coding on dual homed SAS attached storage, and distributed over multiple ...
IBM General Parallel File System can use TSM as a storage tier for GPFS' Information Lifecycle Management (ILM) which provides HSM for a GPFS filesystem. A GPFS filesystem can be simultaneously accessed from multiple servers running Linux, Windows, and AIX by using GPFS filesystem software installed on any of these operating system platforms.
HAMMER2 is a successor to the HAMMER filesystem, redesigned from the ground up to support enhanced clustering.HAMMER2 supports online and batched deduplication, snapshots, directory entry indexing, multiple mountable filesystem roots, mountable snapshots, a low memory footprint, compression, encryption, zero-detection, data and metadata checksumming, and synchronization to other filesystems or ...
A snapshot is a read-only copy of the file system frozen at a point in time. Versioning file systems like Next3 can internally track old versions of files and make snapshots available through a special namespace .
Snapshots are basis for technologies like SnapMirror, SnapVault and Online Volume Move while features like FlexClone, SnapLock, SnapRestore are snapshot-like technologies leverage on WAFL capabilities and properties like manipulations with inodes. Starting with ONTAP 9.4 maximum number of snapshots supported for each FlexVol is 1024, while for ...