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VCS

vcs basics – Communication faults, jeopardy, split brain, I/O fencing

by admin

Let us now see various communication faults that can occur in the VCS cluster and how VCS engine reacts to these fault. There are basically 2 types of communication failures 1. Single LLT link failure (jeopardy) When a node in the cluster has only the last LLT link intact, the node forms a regular membership […]

Filed Under: VCS Tagged With: communication faults, I/O fencing, jeopardy, split brain, vcs

VCS cluster 101 – Cluster Communications, GAB, LLT, HAD

by admin

GAB, LLT and HAD forms the basic building blocks of vcs functionality. I/O fencing driver on top of it provides the required data integrity. Before diving deep into the topic lets see some basic components of VCS which contribute to the communication stack of VCS. LLT – LLT stands for low latency transport protocol. The […]

Filed Under: VCS Tagged With: GAB, HAD, llt, vcs

VCS sample configuration – Oracle Database

by admin

This is one of the simplest configuration of Oracle DB, under VCS. In practical scenarios you may have more mount points and multipathing configured. But once you get the basics behind configuring each resource and how to link them, its easy to configure any complex setup under VCS. Prerequisites: 1. Oracle should be installed on […]

Filed Under: VCS Tagged With: oracle database under vcs, vcs

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