In a installation of WebSphere Application Server with Network Deployment, a node is:
- a physical machine
- an instance of operative system
- a logical set of WAS instances that is independent of physical machine or OS instance
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Basically,
A server is a runtime environment, a process of execution.
A node is a grouping of servers that share common configuration. It is a physical machine.
A cell is a grouping of nodes into a sigle administrative domain. For websphere, it mean that if you group several servers within a cell, then you can administer them with one Websphere admin console
Hope this helps!
Autobyte
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6Almost correct: a single physical machine can have multiple WebSphere nodes. The actual distinction is "A node is a logical grouping of managed servers". Each node corresponds to exactly one profile. Each server corresponds to one running websphere instance. A cell has exactly zero (for a standalone server) or one Deployment Manager node. – paulsm4 Apr 13 '13 at 02:15
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@ggasp Here is what I got off IBM's Information Center
A node is a logical grouping of managed servers.
A node usually corresponds to a logical or physical computer system with a distinct IP host address. Nodes cannot span multiple computers.
Sam Merrell
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Keep in mind that usually <> always.
Since WAS 6.0 and up you usually want to setup more than one node in each physical computer, given the usual power of the server you use the node to separate logical business entities.
Like for example have 6 nodes, 3 in each of 2 machines and have 1 pair of nodes you could define 3 different clusters one for each stage (dev, qa, staging) and making each cluster be invisible to the other.
feniix
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