Dell PowerVault LTO5-140, User Manual

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v SCSI-2: Same as SCSI-1, but uses a 50-pin connector instead of a 25-pin
connector, and supports multiple devices.
v
Ultra SCSI: Uses an 8- or 16-bit bus, and supports data rates of 20 or 40
MBps.
v Ultra2 SCSI: Uses an 8- or 16-bit bus and supports data rates of 40 or 80
MBps.
v
Ultra3 SCSI: Uses a 16-bit bus and supports data rates of 80 or 160
MBps.
v Ultra160 SCSI: Uses a 16-bit bus and supports data rates of 80 or 160
MBps.
software.
Programs, procedures, rules, and any associated documentation pertaining
to the operation of a computer system.
speed matching.
A technique used by the tape drive to dynamically adjust its native
(uncompressed) data rate to the slower data rate of a server. Speed
matching improves system performance and reduces backhitch.
T
TapeAlert.
A patented technology and ANSI standard that defines conditions and
problems that are experienced by tape drives.
TapeAlert flags.
Status and error messages that are generated by the TapeAlert utility and
display on the server's console.
tape cartridge.
A removable storage case that houses belt-driven magnetic tape that is
wound on a supply reel and a takeup reel.
tape drive.
A data-storage device that controls the movement of the magnetic tape in a
tape cartridge. The Dell PowerVault tape drive houses the mechanism
(drive head) that reads and writes data to the tape. Its native data capacity
is 1500 GB per cartridge; with 2:1 compression, its capacity is up to 3000
GB.
tape path.
Within a tape drive, the channel in which the media moves.
V
VDC. Volts DC (direct current).
volt. The SI (international) unit of potential difference and electromotive force.
Formally defined as the difference of electric potential between two points
of a conductor that carries a constant current of one ampere when the
power dissipated between these points is equal to one watt.
W
wet bulb temperature.
The temperature at which pure water must be evaporated adiabatically at
constant pressure into a given sample of air in order to saturate the air
under steady-state conditions. Wet bulb temperature is read from a wet
bulb thermometer.
Glossary
B-9