tape dr ive filler
Glossary-8
tape drive filler
A metal frame that slides into a tape drive slot when a tape drive will not be used in
that slot.
Terabyte
A unit of storage, abbreviated T or TB, equal to 1,024 Gigabytes.
U
A measure of chassis height. 1U in rack measurement is 44.45 millimeters (1.75 inches).
USB
Universal Serial Bus. A serial bus standard used to interface devices.
World Wide Name
A unique identifier in a Fibre Channel or SAS storage network. The first three bytes
are derived from an IEEE Organizationally Unique Identifier (OUI), which defines the
manufacturer or vendor. The remaining five bytes are assigned by the vendor.
WORM
An acronym for Write Once Read Many times, a class of recording systems that allow
recording and adding data, but not altering recorded data.
wrist
A component of the hand assembly that rotates the hand horizontally.
Z mechanism
The robotic assembly mounted at the back of the robot that raises and lowers the arm.
The Z mechanism includes a motor, gears, the bullwheel, and the wires and pulleys
that hold the arm. As the motor turns, the bullwheel rotates and extends or retracts the
wires to lower or raise the arm.
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