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When in the distant 2001 the VMware ESXi hypervisor appeared on the market, a virtual revolution started that began the end of the era of personal computers with the programs installed on them. This event opened a new era in the development of computers and software – client-server technologies and cloud computing technologies.
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This is the third and the last article in the series related to How to build a Cluster based on VMware. In the first article, we saw Cluster Technologies types and understand how to install VMware ESXi, in the second article we look at how to deploy the vCenter Server Appliance (VCSA) 6.5., and now we will look at how to configure VMware HA Cluster.
In the previous article “Building a Cluster based on VMware (part I) we saw Cluster Technologies types and understand how to install VMware ESXi. To create a cluster of ESXi hosts, we need to install vCentre. In this part, we’ll look at how to deploy the vCenter Server Appliance (VCSA) 6.5
To build a cluster, VMware uses from 2x to 32x ESXi servers that are managed using vCenter. To build a cluster, you also need a shared store. It can be implemented with VMware vSAN or with storage support providing access via Fiber Channel, iSCSI or NFS. The storage stores the virtual machine files that are available to all the cluster hosts at the same time. It is due to the overall storage and independence of the virtual machine from the physical platform that rapid migration/recovery of virtual machines is achieved.
We won’t be telling you anything new if we are talking about Microsoft looking to take away VMware resources to the cloud, and now they are including a new product to facilitate the VMware workloads to the MS cloud – Microsoft Azure Migrate – is a free tool, launching Nov. 27th, that will make it easy for VMware customers to bring their application to the cloud.
Most of the companies have to install guide to deploy servers with manual or automatic steps. These guides exist to get a consistent server installation across the organization. Thanks to a consistent environment, the management of the infrastructure is easier and the outages are less common.
Because a virtual machine is basically software, it’s easy to clone and redeploy. We can also create a template from a virtual machine and create new VMs from this template. In this way, we can customize the “initial VM” such as update the OS, copy scripts or set the system, make a template and deploy new VMs from this template. All new VMs will get the OS customization. All that remains to be done is to set the specific parameters of the OS such as IP address, computer name or specific scripts to run. So you can automate the VM deployment regarding your server specifications.