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Some researchers have made a functional and experimental analysis of several distributed file systems including HDFS, Ceph, Gluster, Lustre and old (1.6.x) version of MooseFS, although this document is from 2013 and a lot of information are outdated (e.g. MooseFS had no HA for Metadata Server at that time).
File system Hard links Symbolic links Block journaling Metadata-only journaling Case-sensitive Case-preserving File Change Log XIP Resident files (inline data)
ONTAP is considered to be a unified storage system, meaning that it supports both block-level (FC, FCoE, NVMeoF and iSCSI) & file-level (NFS, pNFS, CIFS/SMB) protocols for its clients. SDS versions of ONTAP (ONTAP Select & Cloud Volumes ONTAP) do not support FC, FCoE or NVMeoF protocols due to their software-defined nature.
Network File System (NFS) is a distributed file system protocol originally developed by Sun Microsystems (Sun) in 1984, [1] allowing a user on a client computer to access files over a computer network much like local storage is accessed.
In 1996, Microsoft published a version of SMB 1.0 [4] with minor modifications under the Common Internet File System (CIFS / s ɪ f s /) moniker. CIFS was compatible with even the earliest incarnation of SMB, including LAN Manager's. [4] It supports symbolic links, hard links, and larger file size, but none of the features of SMB 2.0 and later.
Network-attached storage typically provide access to files using network file sharing protocols such as NFS, SMB, or AFP. From the mid-1990s, NAS devices began gaining popularity as a convenient method of sharing files among multiple computers, as well as to remove the responsibility of file serving from other servers on the network; by doing ...
ext4 (fourth extended filesystem) is a journaling file system for Linux, developed as the successor to ext3.. ext4 was initially a series of backward-compatible extensions to ext3, many of them originally developed by Cluster File Systems for the Lustre file system between 2003 and 2006, meant to extend storage limits and add other performance improvements. [4]
Two or more DLCs can be configured for failover and/or load balancing. While DLC is an IP based protocol, it has been customized for data traffic, making it more efficient (and higher performance) than traditional NAS. In some environments, users have also used the DLC infrastructure to enable lower performance file sharing via NFS or CIFS.