PUBLIC MARKS from holyver with tags cluster & server

This following sections describe alternative architectures for a WebLogic Server cluster: * Architectural and Cluster Terminology * Recommended Basic Architecture * Recommended Multi-Tier Architecture * Recommended Proxy Architectures * Security Options for Cluster Architectures

In this tutorial I will describe how to set up a highly available NFS server that can be used as storage solution for other high-availability services like, for example, a cluster of web servers that are being loadbalanced. If you have a web server cluster with two or more nodes that serve the same web site(s), than these nodes must access the same pool of data so that every node serves the same data, no matter if the loadbalancer directs the user to node 1 or node n. This can be achieved with an NFS share on an NFS server that all web server nodes (the NFS clients) can access.

Many IT administrators have discovered that there is overlap between consolidation and virtualization, and they are wondering how they should reconcile these two techniques in datacenter environments. Virtualization tools such as partitions, virtual machines, and resource management software all enable multiple dominant workloads to run simultaneously on larger servers, which is typically a key aspect of consolidation. But virtualization also offers far-reaching opportunities for administrators to fundamentally transform the operations in their datacenters.