Storage System Research Center. We are investigating the construction of large-scale storage systems using object-based storage devices (OSDs). An OSD is a network-attached storage device that presents an interface of arbitrarily-named data objects of variable size rather than sequentially numbered fixed-size blocks, to deal with the data storage details, such as request scheduling and data layout.
Abstract
This document specifies Pairtree, a filesystem hierarchy for holding objects that are located within that
hierarchy by mapping identifier strings to object directory (or folder) paths two characters at a time. If
an object directory (folder) holds all the files, and nothing but the files, that comprise the object, a
"pairtree" can be imported by a system that knows nothing about the nature or structure of the
objects but can still deliver any object's files by requested identifier.
The developers have released version 1.0 of the XtreemFS distributed file system. The result of a research project funded by the EU, XtreemFS is designed for distributed data management in grids, but is also meant to simplify accessing local files over the internet. It's easy to set up, supports RAID-0 (striping) over different machines and file replication over the network, encrypts data, and provides security mechanisms to ensure only authorised users can access shared files. Unlike sharing via NFS or SMB/CIFS, the file system can extend over several servers, provides security mechanisms, and is optimised for use over slow and not totally reliable internet connections. The file system runs in user space (via FUSE under Linux, via Dokan under Windows), so it can do without drivers or a kernel module. Linux and Windows are supported on the client side, and a Mac OS X client is under construction. The server runs under Linux and Solaris, and the software is licensed under the GPLv2.
How do I restart NFS server when network link goes down between two servers or NFS client / server under CentOS 4.x / RHEL / CentOS Linux 5.x? Forceful umount command result into more problems such as unresponsive NFS server and cold reboot only solves my
FreeNAS is a free NAS (Network-attached storage) server, supporting: CIFS (Samba), FTP, NFS, rsync, AFP protocols, S.M.A.R.T., local user authentication, and software RAID (0,1,5), with a web-based configuration interface. FreeNAS takes less than 32 MB on