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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.
TE_Port (Trunking E_Port) A trunking expansion port that expands the functionality of E ports to support VSAN trunking, Transport quality of service (QoS) parameters, and Fibre Channel trace (fctrace) feature. [16] U_Port (Universal port) A port waiting to become another port type [15]
Zoning is different from VSANs, in that each port can be a member of multiple zones, but only one VSAN. VSAN (similarly to VLAN) is in fact a separate network (separate sub-fabric), with its own fabric services [ clarification needed ] (including its own separate zoning).
Dell Technologies PowerFlex (previously known as ScaleIO and VxFlex OS), is a commercial software-defined storage product from Dell Technologies that creates a server-based storage area network (SAN) from local server storage using x86 servers.
VMFS-L is the underlying file system for VSAN-1.0. Leaf level VSAN objects reside directly on VMFS-L volumes that are composed from server side direct attached storage (DAS). File system format is optimized for DAS. Optimization include aggressive caching with for the DAS use case, a stripped lock down lock manager and faster formats.
Targets can be made incremental, and cascaded tree like dependency structures can be constructed. Targets can be re-applied to their source or any other appropriate volume, also of different size (e.g. resetting any changes from a resize command). Copy-on-write is based on a bitmap with a configurable grain size, as opposed to a journal. [1]
VMware vSAN (previously called VMware Virtual SAN) is software-defined storage that is embedded in VMware's ESXi hypervisor. [ 149 ] [ 150 ] The vSphere and vSAN software runs on industry-standard x86 servers to form a hyper-converged infrastructure (or HCI).
In computer science, storage virtualization is "the process of presenting a logical view of the physical storage resources to" [1] a host computer system, "treating all storage media (hard disk, optical disk, tape, etc.) in the enterprise as a single pool of storage."