Monitoring anti-affinity on XenServer
The article is not finished yet! In this article we will talk about monitoring "anti-affinity" groups of VMs running on XenServer hypervisor. Maybe no all of you know, what the anti-affinity, single point of failure means in virtualization. Let`s start little with the theory.... Have you ever thought what would be single point of failure in your datacenter if you have multiple virtualization hosts? A single point of failure (SPOF) is a part of a system that, if it fails, will stop the entire system from working. The assessment of a potential SPOF involves identifying the critical components of a complex system that would provoke a total systems failure in case of malfunction. Highly reliable systems should not rely on any such individual component. So, what does it mean in ours virtualization in data center? Simple example: We have Windows domain with two Active Directory virtual machines (VMs). In hypervisor we have four hosts which can running lot o
