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Investigatiing the performance scalability & reliability of a distributed file system: Ceph

Tesfaye, Yimer Addisu
Master thesis
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Tesfaye.pdf (2.964Mb)
Year
2011
Permanent link
http://urn.nb.no/URN:NBN:no-37096

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  • Institutt for informatikk [3640]
Abstract
File system is the very crucial part of all computer systems. It has been improved

from local to network and now to distributed file systems. NFS, SAN, and NAS are

becoming obsolete as they all pursue the traditional block based storage systems

and impose the whole work on a single server. The recently innovated DFSs pursue

object-based storage system which helps them to decouple metadata from actual

data and hence avoid single point of failure and increase performance, scalability,

and reliability.

The recently added to Linux DFSs family is a POSIX compatible software called

Ceph. It has developed and implemented some special concepts and unique features

in its architecture (dynamic metadata subtree partitioning, intelligent objectbased

storage, data replication across nodes, fault tolerance, assuming nodes failure

as a norm rather than exception etc). This research paper investigates and evaluates

the author’s claim that ceph is capable of handling more than petabyte-scale of

storage in heterogeneous systems with excellent performance, high scalability and

high reliability
 
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