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A storage area network (SAN) or storage network is a computer network which provides access to consolidated, block-level data storage.SANs are primarily used to access data storage devices, such as disk arrays and tape libraries from servers so that the devices appear to the operating system as direct-attached storage.
A virtual storage area network (virtual SAN, VSAN or vSAN) is a logical representation of a physical storage area network (SAN). A VSAN abstracts the storage-related operations from the physical storage layer, and provides shared storage access to the applications and virtual machines by combining the servers' local storage over a network into a single or multiple storage pools.
Compellent’s storage area network (SAN) system, called "Storage Center", combines several virtualized storage-management applications with hardware. The product tracks metadata, information about each block of data stored on the Compellent system, including the date and time written, frequency of access, associated volume, type of disk drive used, type of data stored and RAID level. [5]
The goal of Fibre Channel is to create a storage area network (SAN) to connect servers to storage. The SAN is a dedicated network that enables multiple servers to access data from one or more storage devices. Enterprise storage uses the SAN to backup to secondary storage devices including disk arrays, tape libraries, and other backup while the ...
They are best used for temporary storage such as caching or temporary files, with persistent storage held on a different type of server. At one time, block-level storage was provided by storage area networks (SAN) and NAS provided file-level storage. [7] With the shift from on-premises hosting to cloud services, this distinction has shifted. [8]
System area networks (SAN) are high-performance, connection-oriented networks that link computer clusters. Microsoft SQL Server 2005 uses it for high-performance connectivity through Virtual Interface Adapter (VIA). [1] [2] This technology is used since the advent of Windows 2000. [3]
Network-attached storage (NAS) is a file-level computer data storage server connected to a computer network providing data access to a heterogeneous group of clients. In this context, the term "NAS" can refer to both the technology and systems involved, or a specialized computer appliance device unit built for such functionality – a NAS ...
Multipath access to a RAID using Linux DM Multipath (Legend: "HBA" = Host bus adapter, "SAN" = Storage area network). In computer storage, multipath I/O is a fault-tolerance and performance-enhancement technique that defines more than one physical path between the CPU in a computer system and its mass-storage devices through the buses, controllers, switches, and bridge devices connecting them.