Shared-nothing Vs. Single Point of Failure
The failure of disk hardware can create a single point of failure that can result in data loss. To avoid this problem, a shared nothing architecture can be employed. Each storage node communicates changes to other nodes or to a master, for replication purposes. If a single disk fails, other copies can be used to reconstruct or replace it on the fly so "nothing" is lost. To enable this feature, clients must be unaware of the physical location of a file. A single global file system is presented to clients, so the file system itself deals with allocations and low-level failures. Examples of this type of file system are found in products such as Ceph, Lustre, Isilon, IBRIX Fusion, and Hadoop.
Read more about this topic: Clustered File System
Famous quotes containing the words single, point and/or failure:
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Without the sweet societie of men.
Wilt thou live single still? one shalt thou bee,
Though never-singling Hymen couple thee.”
—Christopher Marlowe (1564–1593)
“Some parents feel that if they introduce their children to alcohol gradually in the home environment, the children will learn to use alcohol in moderation. I’m not sure that’s such a good idea. First of all, alcohol is not healthy for the growing child. Second, introducing alcohol to a child suggests that you condone drinking—even to the point where you want to teach your child how to drink.”
—Lawrence Balter (20th century)
“Dear George: Remember no man is a failure who has friends. Thanks for the wings! Love, Clarence”
—Frances Goodrich (1891–1984)