Note:
Glossary entries that include the (I) designation are credited to the IBM Dictionary of Computing.Oracle's StorageTek 36-track long-tape cartridge transport with ESCON support. Also known as Silverton.
Oracle's StorageTek Library Storage Module (LSM), a high-performance version of the standard 4410 LSM. Also known as PowderHorn.
A software or hardware problem that terminates a computer processing task.
Automated Cartridge System, a fully-automated, cartridge storage and retrieval library subsystem consisting of one or more Library Storage Modules (LSMs) connected by pass-thru ports.
A library is composed of one or more Automated Cartridge Systems (ACSs), attached cartridge drives, and cartridges residing in the ACSs.
Automated Cartridge System Library Software, Oracle's StorageTek library control software, which runs in the UNIX®-based Library Control System.
Character-oriented data transmission (as distinct from IBM's block-mode transmission).
Automated Cartridge System (ACS)
See ACS.
Automated Cartridge System Library Software (ACSLS)
See ACSLS.
A relationship between an LSM and all attached hosts. LSMs operating in automatic mode handle cartridges without operator intervention. This is the normal operating mode of an LSM that has been modified online. The opposite situation is ”manual mode.” See manual mode.
A code consisting of a series of bars of varying widths. This code appears on the external label attached to the spine of a cartridge and is equivalent to the volume serial number (volser). This code is read by the robot's machine vision system.
Binary Synchronous Communications. An early low-level protocol developed by IBM and used to transmit data on a synchronous communications link. It is a form of data transmission in which synchronization of characters is controlled by timing signals generated at the sending and receiving stations.
A CAPid uniquely defines the location of a CAP by the LSM on which it resides. A CAPid is of the form ”AA:LL:CC” where AA:LL is the LSMid and CC is the two digit CAP number.
The plastic housing around the tape. It is approximately 4 inches (100 mm) by 5 inches (125 mm) by 1 inch (25 mm). The tape is threaded automatically when loaded in a transport. A plastic leader block is attached to the tape for automatic threading. The spine of the cartridge contains an OCR/Bar Code label listing the VOLSER (tape volume identifier).
An assembly that allows several cartridges to be inserted into or ejected from an LSM without human entry into the LSM.
A hardware device containing two or four cartridge transports and associated power and pneumatic supplies.
Operating system software that issues commands (for example, read, write, and rewind) to cartridge subsystems. It is the software focal point for attaching a particular type of control unit. (An example is Oracle's StorageTek CARTLIB product.)
A device that connects the host and main storage with the input and output devices' control units. A full-duplex channel has two paths (that is, 2 wires, or one wire with signals at two frequencies). A half-duplex channel requires that one port receives while the other transmits.
Refers to the communication (transfer of data) between programs on opposite sides of a channel-to-channel adapter.(I)
A model of interaction in a distributed system in which a program at one site serves a request to a program at another site and awaits a response. The requesting program is called a client; the program satisfying the request is called a server.
The system to which the LCS provides an interface to a StorageTek Automated Cartridge System.
Software that provides an interface between the Client Computing System's operating system and the StorageTek Library Control System (LCS).
A transmission medium used in data transmissions for networks using synchronous communications, as opposed to twisted-pair, the primary medium for asynchronous RS-232 communications.
A system composed of other systems, specifically the ACS server system and the client system.
A relationship between a host and an ACS. In this mode, the host and an ACS are capable of communicating (in the sense that at least one station to this ACS is online).
The unique identifier on the server for a communications path. The number is assigned by TCP/IP to identify the unique connection between the server node and a specific port on the server, and the client node and a specific port on the client. The connection number exists only as long as the connection exists.
The data set used by the host software to control the functions of the automated library. Also called a library database.
A Bus-Tech, Inc. hardware device that allows communications between a host processor's block multiplexer channel and a local area network.
A microprocessor-based unit situated locally between a channel and an I/O device. It translates channel commands into device commands and sends device status to the channel.
A special logical partition that provides high-speed caching, list processing, and locking functions in a sysplex.(I)
A high bandwidth fiber optic channel that provides the high-speed connectivity required for data sharing between a coupling facility and the central processor complexes directly attached to it.(I)
A hardware device which translates from a client computing system's data protocol to the data protocol of the StorageTek Control Unit or IMU. An example is DEC's TC44-AA/BA STI-to-4400 ACS Interconnect.
The ability of concurrent subsystems or application programs to directly access and change the same data while maintaining data integrity.(I)
A four-digit hexadecimal number that uniquely identifies a device attached to a processor.
The process of preferring one 36-track transport type over another 36-track transport type.
See drive exclusion.
A relationship between a host and an ACS. In this mode, the host and the ACS are not capable of communicating (there are no online stations to this ACS).
The syntactic representation of a 32-bit integer that consists of four 8-bit numbers written in base ten with periods (dots) separating them. In TCP/IP descriptions, dotted-decimal notation is used for Internet addresses.
(previously known as device separation) refers to the SMC function of excluding drives for an allocation request based on SMC exclusion criteria.
An LSM wall containing tape transports. The drive panel for a T9840 transport can contain either 10 or 20 transports. The drive panel for a non-T9840 transport can contain a maximum of 4 transports.
(previously known as directed allocation) refers to the SMC function of influencing selection of a particular drive based on allocation criteria, including volume location.
A printed representation of the contents of main storage at time t. This representation is used for debugging purposes.
The capability of switching server processors when a system failure occurs on the active server.
A cartridge that has a length of 1100 feet and can be used only on 36-track transports (that is, 4490, 9490, and 9490EE).
Enterprise Systems Connection (ESCON)
A set of products and services that provides a dynamically connected environment using optical cables as a transmission medium.(I)
Numeric codes displayed by messages indicating the type of problem that caused an error.
error recovery procedures (ERP)
Procedures designed to help isolate and, where possible, to recover from errors in equipment.
One LAN architecture using a bus topology that allows a variety of computers to be connected to a common shielded coaxial spine. The Ethernet architecture is similar to the IEEE 802.3 standard.
Provides an area for a completion code to be stored when an operation has completed.
A TCP/IP command that provides a way to transfer files between machines connected through TCP/IP.
One of two end-points in a TCP/IP connection-oriented protocol. Specifies the address of a foreign host that can connect to the server.
A high capacity, helical scan cartridge that can hold up to 50GB of uncompressed data. This cartridge can be used only on RedWood (SD-3) transports.
A standard produced by the IEEE and accepted worldwide for local area networks using CSMA/CD (Carrier Sense Multiple Access with Collision Detection).
Improved Cartridge Recording Capacity. A compression and compaction feature that increases the amount of data that can be stored on a 1/2-inch cartridge.
Interactive Storage Management Facility
A series of applications for defining DFSMS/MVS storage groups and classes.
The numbering system used to specify a network or host on that network for TCP/IP communications. Standard Internet address notation is dotted-decimal format.
Formal description of messages and rules two networks use to exchange messages.
A problem oriented language designed to describe a job's processing requirements to an operating system.
An MVS subsystem that receives jobs into the system, converts them to internal format, selects them for execution, processes their output, and purges them from the system. In an installation with more than one processor, each JES2 processor independently controls its job input, scheduling, and output processing. See also JES3.(I)
An MVS subsystem that receives jobs into the system, converts them to internal format, selects them for execution, processes their output, and purges them from the system. In complexes that have several loosely coupled processing units, the JES3 program manages processors so that the global processor exercises centralized control over the local processors and distributes jobs to them through a common job queue. See also JES2.(I)
The Library Control System processor console is used to control the VM operating system (for the VM-based LCS).
A library complex consists of one HSC Control Data Set (CDS) and may contain up to 256 Automatic Cartridge Systems (ACSs), each of which may contain up to 24 Library Storage Modules (LSMs).
Software that controls the mounting and dismounting of cartridges in an ACS.
The hardware and software that provides the proper environment for the Library Control System.
Properly configured computer hardware that supports the operation of the Library Control System.
A library control component, the client system interface, and library utilities.
A file or data set containing information about the location and status of the removable media volumes, such as cell location, scratch status. Also called a control data set (CDS).
See LMU.
The operation of a 4480 Cartridge Subsystem as part of a 4400 Automated Cartridge System, as opposed to manual mode, in which the operator inserts cartridges into the transports. See manual mode.
See LSM.
Library Managment Unit, A hardware and software product that coordinates the activities of one or more LSMs/LCUs.
See LAN.
The designation of a given application or process among many that are available for a TCP/IP-capable host processor.
The address combination of a TCP/IP-capable host's network address and a specific port for an application process.
See LP.
logical port, CLS software that interfaces with the client system. The CLSLP is one of the software components used to pass data between the client system and the VM/HSC.
Library Storage Module, The standard LSM (4410) a twelve-sided structure with storage space for up to around 6000 cartridges. It also contains a free-standing, vision-assisted robot that moves the cartridges between their storage cells and attached transports. See also PowderHorn, SL3000, SL8500, and WolfCreek.
A method used to identify an LSM. An LSM number is the result of defining the SLIACS macro LSM parameter during a LIBGEN. The first LSM listed in this parameter acquires the LSM number of 00 (decimal) the second LSM listed acquires a number of 01, and so forth, until all LSMs are identified (up to a maximum of 99).
The LMU currently controlling the functional work of the ACS in a dual LMU configuration.
A configuration that contains different types of cartridge drives in both manual and library modes.
The environment where more than one (homogenous or heterogeneous) client system is connected to one LCS.
Optical character recognition label. An external label attached to the spine of a cartridge that is both human and machine readable.
Software that controls the execution of programs that facilitate overall system operation.
A mechanism that allows a cartridge to be passed from one LSM to another in a multiple LSM ACS.
A storage server package including all hardware, software, and configuration parameter settings delivered by the vendor.
A request for enhancement to a product. Normally, this request comes from a client, but may come from Oracle.
One or more tapes containing updates to, or new versions of, the MVS/CSC system software.
A formal description of message formats and the rules two or more machines must follow to exchange these messages.
A defined subset of all scratch tapes. Subpools are composed of one or more ranges of volsers with similar physical characteristics (type of volume—reel or cartridge, reel size, length, physical location, and so on). Some installations may also subdivide their scratch pools by other characteristics such as label type.
Oracle's StorageTek SL3000 modular library offers mixed media, logical and physical partitioning capabilities, advanced management, and high availability. It supports mixed environments, including mainframe and open systems, and is scalable from 200 to just under 6,000 cartridge slots.
Oracle's StorageTek SL8500 modular library offers mixed media, logical and physical partitioning capabilities, advanced management, and high capacity and availability. It supports mixed environments, including mainframe and open systems, and is scalable from the standard 1,450 cartridge slots to 100,880 cartridge slots in a complex configuration.
An ELS library control system such as HSC. In SMC a server is represented by a named SERVER path to a named TAPEPLEX. While the SMC HTTP server component is required as the middle ware on the remote host, the server, as far as SMC is concerned is the ELS library control system operating on the remote host.
A unique address on a network plus a node address plus the id of one specific application on a specific network. An abstraction used by TCP/IP.
A cartridge that can be used on any longitudinal transport (that is, 4480, 4490, 9490, or 9490EE).
The status of a station that has been varied online but is connected to the standby LMU of a dual LMU ACS.
The redundant LMU in a dual LMU configuration that is ready to take over in a Master LMU failure or when the operator issues a SWITCH command.
A hardware path between the host computer and an LMU over which the VM/HSC and LMU send control information.
A set of hardware and software products designed to enable heterogeneous computer systems to use automated tape cartridge library services.
Storage Management Component (SMC)
Software interface between IBM's MSP/EX operating system and StorageTek automated library control systems, HSC and MVS/CSC. SMC performs the allocation processing, message handling, and SMS processing for the ELS solution.
See BISYNC.
Systems Network Architecture (SNA)
A description of the logical structure, formats, protocols, and operational sequences for transmitting information units through and controlling the configuration and operation of networks.
Oracle's StorageTek access-centric cartridge transport capable of reading and writing 9840A cartridges.
Oracle's StorageTek access-centric cartridge transport capable of reading and writing T9840B cartridges.
Oracle's StorageTek access-centric cartridge transport capable of reading and writing T9840C cartridges.
Oracle's StorageTek access-centric cartridge transport capable of reading and writing T9840D cartridges.
Oracle's StorageTek capacity-centric cartridge transport capable of reading and writing 60GB T9940A cartridges.
Oracle's StorageTek capacity-centric cartridge transport capable of reading and writing 200GB T9940B cartridges.
Oracle's StorageTek T10000 A high-capacity cartridge transport capable of reading and writing 120GB or 500GB T10000A cartridges.
Oracle's StorageTek T10000 B high-capacity cartridge transport capable of reading and writing 240GB or 1TB T10000B cartridges
Oracle's StorageTek T10000 C high speed/capacity tape drive, delivering up to 252 MB/sec and 5 TB, native, making it ideal for data center operations with growing data volumes.
Oracle's StorageTek T10000D high speed/capacity tape drive, delivering up to 252 MB/sec and 8.5 TB native capacity, making it ideal for data center operations with growing data retention requirements.
A tape processing device consisting of up to four transports in a cabinet. A drive can refer to an individual transport.
tape library management system (TLMS)
TLMS, as used in this document, refers to any tape library management system, not to CA-1.
(formerly ”library”), a single StorageTek hardware configuration, normally represented by a single HSC Control Data Set (CDS). A TapePlex may contain multiple Automated Cartridge Systems (ACSs) and Virtual Tape Storage Subsystems (VTSSs).
Transmission Control Protocol (TCP)
An inter-network standard protocol that provides a full-duplex stream service.
Sometimes referred to as the VM userid, the userid is the name that identifies a specific ”virtual machine” user or client.
See VM.
A feature of the OS where main storage requirements are allocated by segments (or pages) as needed by programs, thus creating the apparent existence of unlimited or virtual storage.
A storage solution that virtualizes volumes and transports in a VTSS buffer to improve media and transport use.
Virtual Tape Control System (VTCS)
The primary host code for the Virtual Storage Manager (VSM) solution. This code operates in a separate address space, but communicates closely with HSC.
Virtual Tape Storage Subsystem (VTSS)
The DASD buffer containing virtual volumes (VTVs) and virtual drives (VTDs). The VTSS is a StorageTek RAID 6 hardware device with microcode that enables transport emulation. The RAID device can read and write ”tape” data from/to disk, and can read and write the data from/to a real tape drive (RTD).
Virtual Telecommunications Access Method (VTAM)
IBM host-resident communications software that serves as a common interface for communications.
Virtual Machine, A functional simulation of a computer and its associated devices. Each virtual machine is controlled by a suitable operating system.
A proprietary operating system of IBM corporation that consists mainly of two major components, CP and CMS.