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N_Port[Fibre Channel] A "Node" port that connects via a point-to-point link to either a single N_Port or a single F_Port. N_Ports handle creation, detection, and flow of message units to and from the connected systems. N_Ports are end ports in virtual point-to-point links through a fabric, for example the N_Port on an end node to F_Port on a switch to F_Port in that switch to the N_Port on the other end node using a single Fibre Channel fabric switch. N_Port_ID Virtualization (NPIV)[Fibre Channel] The ability for a single physi c al Fibre Channel end point (N_Port) to support multiple, uniquely addressable, logical end points. Protocols that support NPIV are defined in ANSI INCITS T11 Fibre Channel standards, including FC-FS-2 and FC-SW-4. Name_Identifier[Fibre Channel] A 64-bit identifier, with a 60-bit value preceded by a 4-bit Network_Address_Authority Identifier, used to identify entities in Fibre Channel (e.g., Nx_Port, node, F_Port, or Fabric). name server1. [Fibre Channel] A distributed service provided by the fabric to register and discover the attributes of Fibre Channel N_Ports. Once registered, the attributes may be viewed by requesting N_ports. See FC-GS-5. 2. [Network] A server, such as a DNS server, that resolves textual names to machine addresses and vice-versa. naming[Computer System] The mapping of address space to a set of objects. Naming is typically used either for human convenience (e.g., symbolic names attached to files or storage devices), or to establish a level of independence between two system components (e.g., identification of files by inode names or identification of computers by IP addresses). namespace1. [File System] The set of valid names recognized by a file system. 2. [General] In XML, a document at a specific Web address (URL) that lists the names of data elements and attributes that are used in other XML files. 3. [Management] In CIM and WBEM, a collection of object definitions and instances that are logically consistent. National Institute of Standards and Technology (NIST)[Standards] [Data Security] A non-regulatory federal agency within the U.S. Commerce Department's Technology Administration. NIST's mission is to develop and promote measurement, standards, and technology to enhance productivity, facilitate trade, and improve the quality of life. Specifically, the Computer Security Division within NIST's Information Technology Laboratory managed the Advanced Encryption Standard (AES) program. Native Fabric[Fibre Channel] In inter-fabric routing (IFR), the local fabric where the Native Nx_Port resides. Native Nx_Port[Fibre Channel] A role of an Nx_Port in an IFR environment. The Nx_Port physically attached to the local fabric. network[Network] An interconnect that enables communication among a collection of attached nodes, consisting of optical or electrical transmission media, infrastructure in the form of hubs and/or switches, and protocols that make message sequences meaningful. In comparison to I/O buses, networks are typically characterized by large numbers of nodes that act as peers, large inter-node separation, and flexible configurability. See channel, I/O bus, local area network, storage area network. network adapter[Network] An adapter that connects an intelligent device to a network, also called a network interface card, or NIC. See Ethernet adapter, NIC. Network Address Authority (NAA)[Fibre Channel] A 4-bit field used to identify the controlling authority for guaranteeing uniqueness of World Wide Names (WWNs). In a Fibre Channel environment, several Naming Authorities can be active at the same time, therefore Fibre Channel prepends the NAA field to World Wide Names to guarantee global uniqueness. An NAA =1, for example, indicates IEEE 48-bit Identifiers. The NAA also identifies one of several WWN formats, for example Format 1, Format 2 and Format 5. Network Attached Storage (NAS)1. [Storage System] A term used to refer to storage elements that connect to a network and provide file access services to computer systems. These elements generally consist of an engine that implements the file services, and one or more devices, on which data is stored. 2. [Network] A class of systems that provide file services to host computers using file access protocols such as NFS or CIFS. See storage area network. Network Data Management Protocol (NDMP)[Data Recovery] A communications protocol that allows data storage devices, robotic library devices, and backup applications to intercommunicate for the purpose of performing backups. NDMP is an open standard protocol for network-based backup of NAS devices. It allows a network backup application to control the retrieval of data from, and backup of, a server without third-party software. The control and data transfer components of backup and restore are separated. NDMP is intended to support tape drives, but can be extended to address other devices and media in the future. The SNIA is undertaking work in this area, based on donation of the original code from http://www.ndmp.org to the SNIA by NetApp and EMC. Network File System (protocol) (NFS)[File System] [Standards] A distributed file system and its associated network protocol originally developed by Sun Microsystem Computer Corporation and commonly implemented in UNIX systems, although most other computer systems have also implemented NFS clients and/or servers. Network Interface Card (NIC)[Network] An I/O adapter that connects a computer or other type of node to a network. A NIC is commonly a plug-in circuit board, however, the term is also used to denote an ASIC or set of ASICs on a computer system board that perform the network I/O adapter function. The term NIC is universally used in Ethernet and token ring contexts. In Fibre Channel contexts, the terms host bus adapter, HBA and adapter are used in preference to NIC. See adapter, host bus adapter, I/O adapter. NL_Port[Fibre Channel] A "Node Loop" port, capable of arbitrated loop functions and protocols. An NL_Port connects via an arbitrated loop to other NL_Ports and at most a single FL_Port. NL_Ports handle creation, detection, and flow of message units to and from the connected systems. NL_Ports are end ports in virtual point-to-point links through a fabric, for example the NL_Port on an end node to FL_Port on a switch to the F_Port in that switch to the N_Port on the other end node using a single Fibre Channel fabric switch. In the absence of a fabric switch FL_Port, NL_Ports can communicate with other NL_Ports in virtual point-to-point links through a FC_AL open loop circuit often through FC_AL (Arbitrated Loop) hub or loop switch devices. node[Network] [Storage System] An addressable entity connected to an I/O bus or network. The term node is used to refer to computers, storage devices, storage subsystems and network interconnection devices such as switches, routers and gateways. The component of a node that connects to the bus or network is a port. non-erasable content[Data Management] Content that cannot be deleted except in accordance with a retention policy.
normal operation
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