This won't be an issue if VMs do not communicate much with each other. The bandwidth of the legacy network architecture of LINE's private cloud was narrower than that of the downlink of ToR (Top of Rack), which caused bottlenecks in ToR communication, decreasing the throughput drastically. We'll talk more about other projects as we go along.Horizontal expansion of data center network Similarly, we have a project called Cinder, which manages block storage attachments to the compute machines. Then we have the project which manages networking related stuff called Neutron. That is, it determines which user has access to a project in your cloud and which user can do what. Then we have Keystone, which is responsible for authentication and authorization tasks. The first key project, which deals with computing, that is, managing the physical server and virtualization on top of it and all the virtual machine management tasks is called Nova. As we go along, each of these names will become more familiar to you. It's hard to remember the project names on first sight, but we'll introduce some of them here. I mentioned a collection of software projects. OpenStack now contains a global software community of developers and is used by corporations, service providers, researchers, and enterprise data center administrators and managers. Rackspace contributed their cloud files platform code to power the object storage part of OpenStack, while NASA contributed their Nebula platform code to power the compute part. Rackspace and NASA were the key initial contributors. You can view OpenStack as a collection of software projects that enterprises or service providers can use to set up and run their cloud compute and storage infrastructure. In the case of OpenStack, they really mean it. Most open source projects claim to have the simple design philosophy. When OpenStack first started, one of their key design principles was simple to implement and massively scalable. As you can see, such a system should, by definition, be scalable. That's what I call the operating system for your entire data center. Now imagine an operating system from which you can install new operating systems on some servers, configure storage from storage controllers, configure network parameters or networking switches and routers, all from one dashboard. As you've learned in this course, the operating system is your interface to talk to that specific hardware. Now what do I mean by that? When you buy a new switch or a router, for example, you can log into a switch, access its operating system, perform configurations like VLAN or other ACLs, and so on. I like to think of OpenStack as the operating system for your entire data center. Primary activities include organizing large scale test infrastructure, community management, and bringing together more than 20,000 open infrastructure enthusiasts each year at global events like the Open Infrastructure Summit, formerly called the OpenStack Summit. The goal of the OpenStack Foundation is to serve developers, users, and the entire open infrastructure ecosystem by providing a set of shared resources to build community, facilitate collaboration, and support integration of open source technologies. You can see some other key sponsors here, too. For more information about the foundation, just go to /foundation. IBM via Red Hat is an active member and a Platinum sponsor. The OpenStack Foundation oversees the global OpenStack project through community membership and sponsorship. OpenStack, as we've mentioned, is open source software that's released under the terms of the Apache license. The OpenStack software is designed to control large pools of server, storage, and networking resources throughout data center. OpenStack is a global collaboration of developers and cloud computing technologists working to produce a ubiquitous Infrastructure as a Service open source cloud computing platform for public and private clouds. Let's look at an overview of what OpenStack is. For your purposes, learning OpenStack would mean learning cloud computing in a non-proprietary manner. OpenStack is one of the most sought-after open source products in the world. This is based on an open source product called OpenStack. IBM PowerVC is a product that lets you do cloud type management of your IBM power system's servers.
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