Sun Microsystems StorageTek StreamLine SL8500, System Assurance Manual

Page: 263 / 278

E24254-01 Glossary 241
Glossary
drive and electronics module, with one to
five storage expansion modules optional.
See also logical library.
power distribution unit (PDU) A device
for the distribution of AC line power from one
inlet to multiple outlets. Multiple PDUs
provide higher availability because the
power continues if one PDU (or its
alternating current [AC] source if the PDUs
use separate AC sources) loses power.
power grid A power circuit that minimizes
power failures that cause the library to cease
operations. An Product Name library has
five power grids, two for AC power and three
for DC power.
power/communication bus rail A rail that
sits on the robot track to provide 48 VDC
power and communication to the robot.
primary library interface (PLI) The
communication path between the operator
panel and the library controller (the HBC
card.) This consists of Ethernet with TCP/IP
and XML.
put An activity in which a robot places a
cartridge into a slot or drive.
R
RaceTrack ™ architecture The design and
implementation of the SL8500 library’s
multiple high performance robotics.
rail That portion of the upper robot track
assembly that provides power and
communication to the robot.
rail assembly The mechanism on which
the robot travels between cartridge arrays
and tape drives.
reach mechanism A component of the
robot that moves the gripper to get or put a
cartridge at a designated location.
RealTime Growth capability The
capability to add pass-thru ports dynamically
while the library is operating.
Redundant Electronics Redundant
electronics is a hardware activated and
software controlled optional feature for the
SL8500 Library. This feature supplies
automatic and manual switch over for failing
HBC and HBT controller cards.
remote operator console The customer’s
operator panel that interfaces with the PLI.
See also security software layer.
reserved slots Cartridge slots that are
used only for cleaning and diagnostic
cartridges and as drop-off slots.
robot A mechanism that moves horizontally
along a track in the Product Name to
transport tape cartridges to and from other
locations in the library.
Also called an
HandBot or TallBot.
robotics interface module (RIM) The
module containing the curved rails and pass-
through port (PTP) assemblies.
See also
RaceTrack™.
S
security audit The process of reading and
storing in Product Name library memory the
VOLIDs and locations of all cartridges in the
library.
See also host audit.
service area An area between the access
doors of the customer interface assembly
and the service safety door in which an
inoperable robot is stored for service and
other mechanisms can be repaired or
replaced.
service safety door A motor-driven barrier
that separates the service areas of the front
interface assembly from the rest of the
library so that service personnel can safely
repair or replace failed library mechanisms
while the library continues normal
operations.
Synonymous with safety barrier.