You cant have cloud computing without virtualization. Storage virtualization also sometimes called softwaredefined storage or a virtual san is the pooling of multiple physical storage arrays from sans and making them appear as a single virtual storage device. The third category is software virtualization, which separates applications from the hardware and operating system. Server virtualization can be viewed as part of an overall virtualization trend in enterprise it that includes storage virtualization, network virtualization and workload management. Network virtualization refers to the management and monitoring of an entire computer network as a single administrative entity from a single softwarebased administrators console. Softwaredefined storage is a marketing term for computer data storage software for policybased provisioning and management of data storage independent of the underlying hardware. Virtualization is software that manipulates hardware, while cloud computing refers to a service that results from that manipulation.
The management of storage and data is becoming difficult and time consuming. What are some realworld examples for virtualization in. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Storage virtualization white papers virtualization. In its storage virtualization tutorial, published in 2001.
Provide an abstract logical view of physical storage device, so the user can access the integrated storage resources through unified logical interface of this view. Storage virtualization typically refers to storage abstraction. Virtual storage and storage virtualization solutions ibm. Virtualization is a very big term in information technology it world and almost everything in this it world has been virtualized. Containers can share access to an operating system os kernel without the traditional need for virtual machines vms. Storage virtualization is the technology of abstracting physical data. Virtualization is the process of creating a softwarebased, or virtual, representation of something, such as virtual applications, servers, storage and networks. Usually done as software, the hypervisor drives the concept of. It can be divided into storage device based storage virtualization eg raid and network based storage virtualization. Free detailed reports on storage virtualization software are also available.
What are containers containerbased virtualization or. For the user to access that data in the physical storage devices, the virtualization software needs to either create a map using metadata or, in some cases, use. According to torsten volk, ema, there are three core components of the software defined data center. With software defined storage, applications are dynamically provisioned with the precise mix of capacity, performance, and protection neededno more, no less. Each virtual machine contains its own virtual, or software based, hardware, including a virtual cpu, memory, hard disk, and network interface card. Storage virtualization separates the storagemanagement software from the. Storage virtualization can occur in a variety of different scenarios. With the power of storage virtualization, deploy encryption across all your storage existing and newto help improve cyber resiliency while controlling costs and simplifying management. In other words, theres a software layer sitting between the server usually a vm, but not always, and this software layer provides the server with a different view of the underlying storage than what actually exists in the physical world. The benefit of virtualization is that commodity hardware or lessexpensive storage can be used to provide enterpriseclass functionality. But the argument in favor of software defined technologies is still a work in progress because of the drawbacks, and there are serious concerns that need to be. What are the limitations of softwaredefined technology. This is also known as virtualization software, storage software virtualization, sv software, san virtualization software, nas virtualization software, network based virtualization software, file virtualization software, storage based virtualization software.
To what extent a storage virtualization solution can be touted as a fullfledged sds product is, again, a matter of whose definition you want to use. Instead, what most people in the industry mean by storage virtualization is a hardware or software product on the host, on the networkfabric as a. The software or device providing storage virtualization becomes a common disk manager in the virtualized environment. Most of the apps like the number of miles you walk is not stored on ph. Storage virtualization software converts a server, typically an x86 server, into a storage controller and the storage inside the server into the storage system. Read a description of storage virtualization software. Storage virtualization is commonly used in a storage area network san. Both sds and storage virtualization involve abstracting something from storage hardware, but the concepts arent the same. In this article we will tell you about storage virtualization with examples. New software, from operating systems to applications, constantly demands more. What softwaredefined storage isnt sds is not storage virtualization. Heres what you need to know about this popular technology.
Such instances may look and feel like a real server from the point of view of its owners and users but. Containers are a solution to the problem of how to get software to run reliably when moved from one computing environment to another. Virtualization is the pooling of physical storage from multiple network storage devices into what appears to be a single storage device that is managed from a central console. Softwaredefined storage typically includes a form of storage virtualization to separate the storage hardware from the software that manages it. Based on the strategy of virtualizing much of it into cloudbased services, virtualization is best thought of today as an alternative operating model with economic advantages that obviate the need. Virtualization makes a single physical machine act like multiplesaving you the cost of more servers and workstations. Softwaredefined storage sds is a marketing term for computer data storage software for policybased provisioning and management of data storage independent of the underlying hardware. Kvm hypervisor is the virtualization layer in kernel based virtual machine kvm, a free, open source virtualization architecture for linux distributions. The process involves abstracting and covering the internal functions of a storage device from the host application.
Storage virtualization here is the wikipedia definition. Storage virtualization is the process of grouping the physical storage from multiple network storage devices so that it looks like a single storage device. Virtualization software, also called a hypervisor, is what allows one computer or server to host multiple operating systems. Rick has years of it experience and focuses on virtualization, windows based server administration, and. Sds brings to storage the simplicity, efficiency, and costsavings that server virtualization brought to. Mark bowker, an analyst with enterprise strategy group, notes that software defined storage is ultimately doing the same thing that vmware did for the server. Softwaredefined storage is a marketing term for computer data storage software for policybased provisioning and management of data storage. Whether it is a server, san, memory, network or storage, all things can be virtualized. Software called the hypervisor is installed on the physical hardware in a virtualized datacenter, and acts as a platform for virtual machines.
Core components of the software defined data center. Block based storage virtualization is the most common type of storage virtualization. Logical disks vdisks are created by the virtualization software or device and are mapped made visible to the required host or server, thus providing a common place or way for managing all volumes in the environment. Containers are a type of software that can virtually package and isolate applications for deployment. Virtualization is the process of introducing a layer of software in a computer system, immediately above the hardware it runs on, with the purpose of creating a platform that everything else can. The vms act and perform just like physical machines, but they use the physical machines computing resources things like cpu, memory, and storage. Storage virtualization is a system administration practice that allows. Storage virtualization and software defined storage youtube.
The virtualization software works by intercepting storage system io. Storage virtualization also sometimes called softwaredefined storage or a virtual san is the pooling of multiple physical storage arrays from sans and making. The management of storage devices can be tedious and timeconsuming. How much of a storage tier is made up of solidstate drives ssds or hdds is handled by software in the array and is hidden at the guest machine or user level. In other words, theres a software layer sitting between the server usually a vm, but. Storage virtualization is usually implemented via software applications and often used in san storage area network, a highspeed subnetwork of shared storage devices, and makes tasks such as archiving, backup, and recovery easier and faster. Storage virtualization is not exactly the same as software defined storage sds, though sds is a form of storage virtualization. Softwaredefined storage sds is a computer program that manages data storage resources and functionality and has no dependencies on the underlying physical storage hardware. Rick vanover is a software strategy specialist for veeam software, based in columbus, ohio. Storage virtualization allows the capacity of many storage devices to be pooled so it looks like all the storage is sitting on one device. Arraybased storage virtualization most commonly refers to the method in which a storage array presents different types of physical storage for use as storage tiers. Host based virtualization requires additional software running on the host, as a privileged task or process. Containers can share access to an operating system os kernel without the traditional need for. The pool can integrate unlike storage hardware from different networks, vendors, or data centers into one logical view and manage them from a single pane of glass.
And the fourth is storage virtualization, which combines multiple network storage resources into a single storage device where multiple users may access it. Software defined technologies are still evolving and should see vast improvements in the years ahead, affecting servers, network, storage and perhaps even the data center as a whole. In computer science, storage virtualization is the process of presenting a. Virtualization is the process of creating several virtual machines vms from one physical machine using software called a hypervisor. Storage virtualization can be implemented by using software. What are some of the differences between storage virtualization and software defined storage. Network virtualization also may include storage virtualization, which involves managing all storage as a single resource. Storage virtualisation vs software defined storage. A hypervisor is a process that separates a computers operating system and applications from the underlying physical hardware. Every system administrator or beginner should know about storage virtualization, so do read. Virtualization enables you to get more value out of them.
Storage virtualization is not exactly the same as softwaredefined. A business logic layer is also required to translate application requirements, slas, policies and cost considerations. Block based virtualization abstracts the storage systems logical storage from its physical components. This trend is one component in the development of autonomic computing, in which the server environment will be able to manage itself based on perceived activity. Storage virtualization an overview sciencedirect topics. Some of the examples of real world application of virtualization are. Storage virtualization also helps the storage administrator perform the tasks of backup.
1046 1344 181 914 299 88 63 286 1023 1509 1302 254 1118 87 852 1009 190 1406 384 82 670 790 792 388 323 222 1293 137 979 873 1069 100 748 808 651 1355 774 932 184 941 778 221 438 391 1355