Markus Schiltknecht wrote:
> In the very same paper, they define what a Cluster is for them: "A
> cluster is a group of independent servers that cooperate as a single
> system. The primary cluster components are processor nodes, a cluster
> interconnect, and a shared disk subsystem. The clusters share disk
> access and resources that manage data, but the distinct hardware cluster
> nodes do not share memory."
>
> Thus, Oracle RAC seems to be a shared disk solution. Only in conjunction
> with their OCFS, you could probably call it a shared-nothing solution,
> but it's certainly not a shared-memory thing.
>
> I'd vote for explaining these terms in the PostgreSQL documentation, as
> there seems to be a lot of confusion regarding these terms.
OK, but how does explaining the terms help our users?
--
Bruce Momjian bruce@momjian.us
EnterpriseDB http://www.enterprisedb.com
+ If your life is a hard drive, Christ can be your backup. +
