This software virtualizes the resources in the individual node and shares them with the other nodes, allowing storage and other resources to be used as a single storage or compute pool. This is a type of software-defined storage because each node has a software layer running virtualization software identical to all other nodes in the cluster.
HCS utilizes the cloud to combine the functions of computing, virtualization and storage as a physical unit that can be managed as a single system. Hyperconverged storage (HCS) is the next step up from storage virtualization and SDS. Storage virtualization can also help you increase storage capacity without the need to buy new storage devices. It hides the complexity of the storage system, which allows users and administrators to perform tasks such as backup, archiving and recovery in an easier, less time-consuming manner. Unlike SDS, which separates the software layer from the hardware to build a storage infrastructure, storage virtualization simply pools storage resources so that it appears to users like a single, standard read or write to a physical drive. Relying on software to identify available storage capacity, the technology then aggregates that capacity as a pool of storage that can be used in a virtual environment by virtual machines. It is the pooling of physical storage from multiple devices into what appears to be a single storage device managed from a central console.
Storage virtualization refers to the storage capacity that is accumulated from multiple physical devices and then made available for reallocation in a virtualized environment.
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