Sun Microsystems StorageTek StreamLine SL8500, System Assurance Manual

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Comparisons
178 SL8500: Systems Assurance Guide • July 2011 E24254-01
Hand: The component that reads cartridge
VOLIDs, stores, and retrieves cartridges;
cartridge VOLIDs are read before retrieval by the
robot.
HandBot: The component that stores and
retrieves cartridges; it reads cartridge VOLIDs:
When entered through a CAP
During an audit
When retrieved through a PTP
Since the location and VOLIDs of cataloged
cartridges are resident on the HBC card, VOLIDs
are not read during normal mount/dismount
activities; mounts/dismounts are done by “dead
reckoning.”
Library: All software and hardware related to
Automated Cartridge Systems.
SL8500 Modular Library: A single unit
composed of at least three modules (drive and
electronics module, robotics interface module,
customer interface module); up to
five storage
expansion module may be added.
Library Control Unit (LCU): The power source
and robotic controller for an LSM.
An LCU is not attached to the library; its function
is now contained within library’s HBC and HBT
controller cards.
Library Management Unit (LMU): The
controller of all LSMs connected to it; the
interface between the LSMs and the host. The
term is still used in relation to addressing.
An LMU is no longer housed in a separate unit;
its function is now contained within library HBC
(controller) cards. See also “Library Complex”.
Library Storage Module (LSM): Storage
module, up to sixteen per ACS (LMU).
Rail: Each rail within an SL8500 is designated
as one LSM (4 LSMs per SL8500 Library) by
host software.
Master PTP: The controlling PTP; its commands
originate from the LCU that contains the LP/LPP
card.
Home library: Home denotes the library
supplying power and communication to the PTP.
Power and communication originate from the
left
side (as viewed from the front) of the home
library; either library may initiate a PTP activity.
Two SL8500 libraries are joined together by four
PTPs because there are four rails per library.
An SL8500 library PTP cannot perform a pass-
thru operation to or from a 9310 or L5500 LSM.
Note: Internal racks and Ethernet switches are
required for PTP operations.
Robot: A component that revolves around a
central point in a circular LSM.
HandBots: Components that move linearly
along rails and vertically along the hand’s Z
column. A single library can have from four to
eight HandBots.
Table 89. Old versus New Terminology (Continued)
9310 PowderHorn SL8500