Java nodes clustering, one vs many

[Former Member]

Hi, we have a Java production server with 6 nodes of 1 GB each. we thinking about changing that to 1 node of 6 Gb. Do you know what would be the benefits? is possible to assign that memory to a server in a 6.40 WAS?

Many thanks

Mario

[Former Member]

Hi Mario,

Since it is your Production System, I would suggest you to have more than one node since it works as HA.

If you have only one server node & if that is stopped/hung due to some reason, your production system will be unavailable to the users. If you have more than one node, your load gets divided & incase of server node hung/stop, requests gets directed to another working node.

One more benifit of having additional node is that you can restart single server node (which is having problem) & you need not bring down the complete productiove instance.

There are many possible combinations depending on your hardware configuration & business requirement.

Regards,

-Pankaj Kapote

[Former Member]

Hi,

It is a sizing question. The number of server nodes depends on number of user concurrently access the system and also the load the system.

If you think the load is not that much , I would suggest to reduce number of server nodes to 1. If not, you may have to consider having more than one server nodes.

Use the link below to mae the judgement for your system. The link is for IBM server.

http://www-03.ibm.com/systems/i/advantages/sapj2ee/tuning.html

Thanks!