- UDP port number
See TCP port number.
- Uniform Naming Convention (UNC)
The resource identification mechanism used by CIFS.
- Uniform Resource Locator (URL)
The resource identification mechanism used by HTTP, FTP, and other sockets-based applications.
- Virtual LAN (VLAN)
A logical Ethernet LAN implemented within a larger physical Ethernet LAN.
- Virtual SAN (VSAN)
A logical Fibre Channel SAN implemented within a larger physical Fibre Channel SAN.
- virtualization
The abstraction of physical resources into logical resources.
- volume
A unit of storage. A volume can be a block-level entity such as a LUN, or a file-level entity such as an NFS mount point. A volume can also be a tape cartridge or other removable media.
- Volume Serial Number (VSN)
See volume tag.
- volume tag
An identifier used to track physical units of removable storage.
- WDM window
Wavelengths generally in the range of 15001600 nanometers.
- Well Known Address (WKA)
A reserved address that is used for access to a network service.
- well known logical unit
A logical unit that supports specified functions, which facilitate initiator control of a target device.
- Windows sockets (Winsock)
An adaptation of UNIX sockets to Windows. Winsock provides session, presentation, and application layer functionality to applications running on Windows operating systems.
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