Storage virtualization, also known as virtual SAN or software-defined storage, refers to the pooling of physical storage into multiple devices, which will further appear to be a single virtual device. The primary utility of storage virtualization is proper IT storage management. It offers more flexible and scalable options for storage resources. It helps in maintaining less downtime due to better storage availability. It minimizes data loss and congestion, which ultimately helps in increasing proficiency and overall output. Types of storage virtualization include kernel level virtualization, hardware assisted virtualization, full virtualization, para-virtualization, and hypervisor virtualization.