EMC Celerra HighRoad
Encyclopedia
EMC Celerra HighRoad or lately re-named MPFS
(Multi-Path/Multi-Protocol File System) is a Distributed Filesystem. A client-resident agent interacts with the Celerra File Server
via a special protocol FMP (File Mapping Protocol).
The File Mapping Protocol splits the NFS metadata flow (“Control”) from the data flow which is directly transferred via an iSCSI (MPFSi) or FC (MPFS) link between the client and a Clariion
or Symmetrix
disk array. All of the file system operations including block allocations, file locking, metadata operation and logging are performed by the Celerra Metadata server, but actual data movement occurs directly between the client and the storage array. By directing data movement to the low latency storage channel, a client realizes line speed data delivery, enabling higher bandwidth than conventional NFS would support. MPFS’s block level data delivery also dramatically reduces the Celerra file server’s workload as the datamovers are not moving data to/from the clients, permitting a large number of clients to share the namespace of a single file server blade. HighRoad/MPFS is a very attractive shared file storage solution for High Performance Computing (HPC) / Grid Computing environments.
that enables file sharing by hundreds to thousands of client nodes while realizing at least twice higher aggregate bandwidth as compared to conventional NFS file serving. MPFS accomplishes this without requiring any application changes. -
MPFS is a combination of patented technology and the NFS protocol. It is a predecessor of the pNFS standard for block devices parallel access. Parallel NFS or pNFS is an attempt to define a standard framework for building Parallel Data Storage Architectures. pNFS is a proposed extension to the NFSv4 protocol in works at IETF.
Multi Path File System
In computing MPFS - Multi Protocol File System is a multi-path network filesystem technology developed by EMC. MPFS is intended to allow hundreds to thousands of client computer nodes to access shared computer data with higher performance than conventional NAS file sharing protocols such as NFS.-...
(Multi-Path/Multi-Protocol File System) is a Distributed Filesystem. A client-resident agent interacts with the Celerra File Server
Celerra
Celerra is a discontinued NAS device produced by EMC Corporation. It was available as an integrated unit or as a NAS header which can be added to an independent EMC storage array such as a CLARiiON or a Symmetrix. It supports CIFS, NFS, FTP, NDMP, TFTP and MPFS protocols...
via a special protocol FMP (File Mapping Protocol).
The File Mapping Protocol splits the NFS metadata flow (“Control”) from the data flow which is directly transferred via an iSCSI (MPFSi) or FC (MPFS) link between the client and a Clariion
CLARiiON
CLARiiON is a discontinued SAN disk array manufactured and sold by EMC Corporation, it occupies the entry-level and mid-range of EMC's SAN disk array products....
or Symmetrix
Symmetrix
The Symmetrix system is EMC Corporation's flagship enterprise storage array. The Symmetrix development has been led by Moshe Yanai, who joined EMC in 1987, until shortly before his leaving EMC in 2001. There have been many generations of Symmetrix hardware, with the first appearing in 1990 and the...
disk array. All of the file system operations including block allocations, file locking, metadata operation and logging are performed by the Celerra Metadata server, but actual data movement occurs directly between the client and the storage array. By directing data movement to the low latency storage channel, a client realizes line speed data delivery, enabling higher bandwidth than conventional NFS would support. MPFS’s block level data delivery also dramatically reduces the Celerra file server’s workload as the datamovers are not moving data to/from the clients, permitting a large number of clients to share the namespace of a single file server blade. HighRoad/MPFS is a very attractive shared file storage solution for High Performance Computing (HPC) / Grid Computing environments.
that enables file sharing by hundreds to thousands of client nodes while realizing at least twice higher aggregate bandwidth as compared to conventional NFS file serving. MPFS accomplishes this without requiring any application changes. -
MPFS is a combination of patented technology and the NFS protocol. It is a predecessor of the pNFS standard for block devices parallel access. Parallel NFS or pNFS is an attempt to define a standard framework for building Parallel Data Storage Architectures. pNFS is a proposed extension to the NFSv4 protocol in works at IETF.
See also
- List of file systems, Distributed file systems section