HP BL536A User's & Service Manual page 161

robot An electro-mechanical device that transports tape cartridges to and from the magazines and
drives.
robotics unit The unit that includes the robotic components and that controls the movement of the robot between
storage slots, drives, and load ports.
S
SAS Serial Attached SCSI. A computer bus technology and serial communication protocol for direct
attached storage devices, including disk drives and high-performance tape drives.
SCSI Pronounced scuzzy, an acronym for Small Computer System Interface, a standard interface and
command set for transferring data between mass storage and other devices. The host computer
uses SCSI commands to operate the device. Depending on the model, the physical connection
between the host computer and the tape drives will use a parallel SCSI or SAS interface.
SCSI address See SCSI ID.
SCSI devices Computer devices with a SCSI interface. In this document, SCSI devices refers to devices with a
parallel SCSI interface.
SCSI ID Each device on a parallel SCSI bus is identified by its SCSI ID, which is a number in the range
0–7 on a narrow bus and 0–15 on a wide bus.
SE Single Ended SCSI. The original SCSI bus technology, which uses single ended signaling —
where the signal is referenced to ground. SE SCSI busses have lower signal rates and much
shorter allowed cable lengths. SE SCSI should not be used with Ultrium tape drives.
slot The location in the magazine in which a tape cartridge is stored. Also called a cell.
T
tape cartridge A container holding magnetic tape that can be processed without separating the tape from the
container. The device uses data and cleaning cartridges. These cartridges are not interchangeable.
tape drive An electro-mechanical device that moves magnetic tape and includes mechanisms for writing
and reading data to and from the tape.
Terabyte A unit of storage, abbreviated as T or TB, equal to 1,024 Gigabytes.
terminator The last device at the end of a parallel SCSI chain must be terminated by terminator into the
connector. An appropriate terminator is shipped with parallel SCSI devices.
U
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.
W
World Wide A unique identifier in a Fiber Channel or SAS storage network, also called a World Wide Name
Identifier (WWN). The first three bytes are derived from an IEEE Organizationally Unique Identifier (OUI),
which identifies 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 optical recording systems that allow
recording and adding data, but not altering recorded data.
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