New cluster or new pool of resources for tier 1 applications?

Hello

I have an existing cluster 5 node blade Esxi HP that I put in place for resource pools containing loads of pre-production and production work.  Now, we want to welcome applications from level 1 (Oracle DBs, Weblogic and middleware VMs servers).  Is there a best practice in the establishment of tier 1 workloads?  Should I add additional nodes to the cluster (until 8) and create a separate pool of resources for tier 1 applications, or should I implement a cluster 3 separate node (and generation) devoted entirely to the only level 1 workloads?  What are the advantages/disadvantages of each method?

Thanks for your comments.

M

It depends on.

(1) that you're going to develop this group even more tomorrow, or after you have added the hosts you have in mind who will be the end of the work?

(2) how the negative risk is your boss or your client?

(3) do you run your environment oversubscribed?

(4) you understand the fundamentals of Resource Pools?

Since I'm pretty risk adverse, I am tempted to create a new cluster with 4 nodes, where each node spans at least 2 or 4 chassis. Resource pools can resolve the problem of conflict of resources, but adds an extra layer of complexity to an environment that is not always welcome, and can make the diagnosis of difficult performance.

Since you mention that you run ESXi on blades, please see the following article. I found it very informative regarding the problems of redundant N + 1 with blade configurations;

http://longwhiteclouds.com/2012/05/13/when-should-N1-not-equal-1-host-with-VMware-HA/

Kind regards

Paul

Tags: VMware

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