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Shared Storage Cluster

by Michael Mende — last modified 2008-02-12 17:13

Shared Storage Clusters are setups where some servers share a storage and possibly even share file systems like GFS or OCFS2.

A typical situation: services provided by different servers need the same data. First thought to solve the problem would possibly be a network file system like NFS or samba. But both lack on IO-performance. Faster are distributed file systems like GFS [1], GFS2 [1] or OCFS2 [2]. They provide concurrent read and write access on simultaneously mounted file systems. It does not matter whether the block devices are provided either via iSCSI or Fibre Channel connected storages or via GNDB [1].

NAS mit Speicherarrayseinfaches iSCSI- oder FibreChannel-basiertes SAN


Links:
[1] http://sources.redhat.com/cluster/
[2] http://oss.oracle.com/projects/ocfs2/