| StorageTek SL500 Systems Assurance Guide E21060-07 |
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access door
A door on the front of a library through which service personnel or operators can access the interior of the library. Synonymous with front door.
array
(1) A section of vertical or horizontal cartridge receptacles inside a library.
(2) A molded module that holds multiple cartridges.
audit
The process of reading and storing in SL500 library memory the VOLIDs and locations of all cartridges in the library.
bar-code scanner
A component of the robot that is used for cartridge identification and position calibration.
base module
The module in an SL500 library that contains the robotics unit and the base module. This module also houses the library backplane (RLM card), RLC card, interconnect cards, and one or two power supplies and drives.
cartridge
A container holding magnetic tape that can be processed without separating the tape from the container. The library uses data, diagnostic, and cleaning cartridges. These cartridges are not interchangeable.
cartridge access port (CAP)
A device in the library that allows an operator to insert or remove cartridges during library operations.
cartridge expansion module (CEM)
An optional module that adds cartridge storage slots to an SL500 library.
cartridge tape
A container holding magnetic tape that can be processed without separating the tape from the container.
cleaning cartridge
A cartridge that contains special material to clean the tape path in a transport or drive. LTO cleaning cartridges labels have ”CLN” prefixes and media ID of CU.
data cartridge
A term used to distinguish a cartridge onto which a tape drive may write data from a cartridge used for cleaning or diagnostic purposes.
drive expansion module (DEM)
An optional module that adds cartridge storage slots and tape drive slots to an SL500 library.
dynamic World Wide Name (dWWN)
A feature that applies dynamic names to network devices rather than fixed names. When a dWWN-named device is replaced, it is assigned the same WWN as the one it replaced, preventing reconfiguration of the network.
enter
The process of placing a cartridge into the cartridge access port so that the robot can insert it into a storage slot. Synonymous with import.
Ethernet
A local-area, packet-switched network technology. Originally designed for coaxial cable, it is now found running over shielded, twisted-pair cable. Ethernet is a 10 or 100-megabits-per-second LAN.
export
The action in which the library places a cartridge into the cartridge access port so that the operator can remove the cartridge from the library. Synonymous with eject.
Fibre Channel
A bidirectional, full-duplex, point-to-point, serial data channel structured for high performance capacity.
Fibre Channel is an interconnection of multiple communication ports, called N_Ports. These N_Ports are interconnected by a switching network, called a fabric, to a point-to-point link, or an arbitrated loop.
Fibre Channel is a generalized transport mechanism with no protocol of its own. A Fibre Channel does not have a native I/O command set, but can transport existing Upper Level Protocols (ULP) such as SCSI and IPI.
Fibre Channel operates at speeds of 200 MB per second. Fibre Channel operates over distances of up to 100 m over copper media or up to 10 km over optical links.
hand assembly
A part of the library robot whose function is to grasp cartridges and move them between storage slots and drives. A bar-code scanner on the hand assembly reads cartridge volume labels.
hot-swappable
The capability that allows a component to be replaced while power to the component is maintained. This feature allows hardware maintenance actions and hardware upgrades to proceed without disrupting subsystem availability.
import
The process of placing a cartridge into the cartridge access port so that the robot can insert it into a storage slot. Synonymous with enter.
interlock switch
A switch that disconnects power to library mechanisms, excluding tape drives, when the front door is opened.
magazine
A removable array that holds cartridges and is placed into the cartridge access port (CAP).
opened
Status indicating that software has made a CAP available for operator use. An LED is lit when a CAP is unlocked.
power distribution unit (PDU)
Converts and distributes power from the source (such as a wall outlet) to the device requiring power.
rack module (RU)
A standard measurement of vertical space inside a rack-mount cabinet. One RU equals 44.5 mm (1.75 in.).
reach mechanism
A component of the robot that moves the gripper to get or put a cartridge at a designated location.
reserved slots
Configurable cartridge slots that are used only for cleaning and diagnostic cartridges.
robotics unit
The module that includes the robotics components and that controls the movement of the robot between storage slots, drives, and CAPs.
StorageTek SL500 Modular Library System
An automated tape library composed of:
Base module
Drive expansion module (optional)
Cartridge expansion module (optional)
tape drive
An electromechanical device that moves magnetic tape and includes mechanisms for writing and reading data to and from the tape.
tape drive tray assembly
The mechanical structure that houses a tape drive, fan assembly, power and logic cards, cables, and connectors for data and logic cables. Synonymous with drive tray assembly.
World Wide Name (WWN)
A 64-bit integer that identifies a Fibre Channel port. See also dynamic World Wide Name (dWWN).
