Quantum P2000 Guia do Utilizador Página 136

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Glossary
116 ATL P2000 Series Automated Tape Library Users Guide
cartidge bins (stationary or removeable) for loading and unloading
tape cartridges.
LTO
Linear Tape-Open is a tape drive specification backed by
IBM, Hewlett-Packard, and Seagate.
LVD
Low Voltage Differential or LVD is the newest type of SCSI
cabling, and LVD SCSI specifications can reach distances up to 12
meters. LVD SCSI cabling requires "Twist and Flat" ribbon cable
and an LVD/SE terminator or a "Twist and Flat" ribbon cable with
built-in LVD termination. All IBM LTO tape drives are LVD
devices. Quantum DLT8000 and SDLT tape drives can be LVD or
HVD devices.
M Mixed media
This term refers to the use of different tape drive
types within one tape library. ATL mixed media libraries may use
DLT and LTO tape drives simultaneously (LVD), as well as DLT
and SDLT tape drives HVD or LVD).
Mixed media gripper
A specialized gripper assembly which will
accept DLT, SDLT or LTO tape cartridges.
MSBF
Mean Swaps Before Failure
MTBF
Mean Time Between Failures
MTTR
Mean Time To Repair
Multi-unit
Refers to linking up to five P2000 and/or P3000 tape
libraries together using ATLs Pass Through Mechanism.
NNEMA
National Electrical Manufacturers Association
Network interface Card (NIC)
A NIC is a device that handles
communication between a device and other devices on a network.
NVRAM
Non-Volatile Random Access Memory is a type of
memory that retains its contents when power is turned off. One
type of NVRAM is SRAM that is made non-volatile by connecting
it to a constant power source such as a battery. Another type of
NVRAM uses EEPROM chips to save its contents when power is
turned off. In this case, NVRAM is composed of a combination of
SRAM and EEPROM chips.
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