Sun Microsystems StorageTek StreamLine SL8500, System Assurance Manual

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E24254-01 Appendix F Comparisons 179
Comparisons
Capacity Comparison with 9310 Libraries
The advantages of the SL8500 library can be seen when compared to a 9310
ACS that contains three, dense pack library storage modules (LSMs).
Three 9310 LSMs provide storage for 33 cartridges per 0.1 m
2
(1 ft
2
), whereas
an SL8500 library complex, composed of three SL8500s provides storage

for 59 cartridges per 0.1 m
2
(1 ft
2
).
Size/capacity: Determined by firmware and
number of installed arrays; approximately 6,000
cartridges per LSM.
Size/capacity: Determined by the number of
modules installed: three are required (1448
cartridges), but an additional
five storage
expansion modules can be added (1728
cartridges each). Slots are enabled to allow
“capacity on demand.”
Standby PTP: The LSM whose PTP mechanism
does not contain the PTP motor or LP/LPP card
(LCU).
Away library: Away denotes the library not
supplying power or communication to the PTP.
Away libraries are on the
left side (as viewed
from the front) of the home library; either library
may initiate a PTP activity.
SL8500 libraries are joined together by four
PTPs because there are four rails.
Note: Internal racks and Ethernet switches are
required for PTP operations.
Tape drive capacity: Up to 80 (with 9741e
cabinets).
Tape drive capacity: From 1 to 64, with 16 per
drive array assembly
Theta: Describes the circular path of the robot. Because the path for the HandBots is no longer
circular, the term “theta” motion does not apply.
Wrist: Describes outer-to-inner wall hand
motion.
Wrist: Describes outer-to-inner wall HandBot
motion.
Z motion: Describes the vertical path of the
robot (4410) or hand (9310/L5500)
Z motion: Describes the vertical path of a
HandBot hand assembly.
Table 89. Old versus New Terminology (Continued)
9310 PowderHorn SL8500