2 architecture, the coupling of an LU name entry and a mode name entry. This coupling allows a pool of sessions with the same characteristics to be established.
See logical unit number.
The name by which VTAM refers to a node in a network. See also location name.
See logical unit number map.
- A process where a host object can detect more LUNs than it is intended to use, and the device-driver software masks the LUNs that are not to be used by this host.
- A process that allows or prevents I/O to the disk drives through the host-bus-adapter (HBA) device or operating-system device driver.
The classification of a logical unit in terms of the specific subset of SNA protocols and options that it supports for a given session. LU type specifies the values allowed in the session activation request, the usage of data stream controls, function management headers, request unit parameters, sense data values, and presentation services protocols.
LU type 0 (LU0)
Type of logical unit used for communicating with non-SNA terminals, using binary synchronous communication (BSC). LU0 enables the transmission of non-SNA protocols across an SNA network, and is heavily used for connecting non-SNA terminals. LU0 is more primitive than LU6.
LU type 1
An SNA logical unit type that provides a communication protocol among host application programs and terminals. Some printers also use this protocol to communicate with host application programs.
LU type 2
See Logical Unit type 2.
LU type 6 (LU 6)
Type of logical unit, used for processor-to-processor communication. LUTYPE6 defines a number of processes (applications - the file model, the queue model, the DL/I model, and so on) which are used in CICS intersystem communication (ISC). LUTYPE6 also supports user application to user application communication. There is no BMS support for this LU Type.
LU type 6.1 (LU 6.1)
Type of logical unit used for processor-to-processor sessions. LU type 6.1 is a development of LU type 6. CICS - DL/I, IMS, or SQL/DS intercommunication uses LU type 6.1 sessions.
LU type 6.2
An SNA logical unit type that converges functions from existing LU types to provide a single, interchangeable communication protocol. See also Advanced Program-to-Program Communication.
See logical unit of work.
See logical unit of work identifier.
See logical unit of work state.
See logical volume.
An expression that represents a data object that can be viewed, tested, and changed. An lvalue is usually the left operand in an assignment expression. See also rvalue.
See Logical Volume Manager.
LVM split-site mirroring
See mirror pool.
See logical volume.
See Logical Volume Snapshot Agent.
See log write-ahead.
See long wavelength.
See long wavelength.
See Lempel-Ziv Welsh.