HP EML E-series Tape Libraries - Manual (Page 130)

drive module The entire assembly that houses the tape drive, including the metal housing
and connectors.
ESD Electrostatic discharge. The release of static electricity from one conductor to
another.
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-megabytes-per-second LAN.
event A significant library occurrence (such as tape drive errors, online/offline
transition, tape drive cleanings, and other information) that is listed in an
automated log.
export The action in which the library places a tape cartridge into the load port so that
the operator can remove the cartridge from the library.
Fibre Channel A bidirectional, full-duplex, point-to-point, serial data channel structured for high
performance capacity. The 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 input/output command set, but
can transport existing Upper Level Protocols (ULP) such as SCSI. 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.
flash memory Firmware memory for the current and previous version of library firmware.
get An activity in which a robot obtains a tape cartridge from a slot or tape drive.
GUI Graphical user interface. Software that allows the user to control the library
environment through visual screens.
HBA Host bus adapter. A circuit board residing in the host system that handles
requests to and from the host system and the library.
host One or more computers that generate and communicate data to the library.
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.
HP (unit of mea-
sure)
Horizontal pitch. A measurement of the width of a chassis. Library circuit card
assemblies sitting horizontally in card cages are measured vertically in these
units where one HP is 5.08 mm (0.2 inches).
HP Enterprise
Modular Library
E-Series
An automated tape library composed of a:
• Base module
• Tape drive expansion module (optional)
• Card cage expansion module (optional)
import The process of placing a tape cartridge into the load port so that the robot
can insert it into a storage slot.
interlock switch A switch that disconnects power to library mechanisms, excluding tape drives,
when the center door is opened.
initialization A procedure that activates a machine reset, initiates wake-up diagnostics (from
EPROMs) and loads functional code.
inventory The process of reading and storing in memory the bar code identification and
locations of all tape cartridges in the library.
130 Glossary