Dell PowerVault LTO User Manual page 72

P
parity.
The state of being even-numbered or odd-numbered. A parity bit is a binary number that is added to a
group of binary numbers to make the sum of that group always odd (odd parity) or even (even parity).
parity error.
A transmission error that occurs when the received data does not have the parity that is expected
by the receiving system. This usually occurs when the sending and receiving systems have different
parity settings.
port.
(1) A system or network access point for data entry or exit. (2) A connector on a device to which
cables for other devices such as display stations and printers are attached. (3) The representation of a
physical connection to hardware. A port is sometimes referred to as an adapter; however, there can be
more than one port on an adapter.
power connector.
Located at the rear of the tape drive, the connector to which the internal power cable of an enclosure
connects.
power cord.
A cable that connects a device to a source of electrical power.
power-off.
To remove electrical power from a device.
power-on, powered-on.
(1) To apply electrical power to a device. (2) The state of a device when power has been applied to it.
R
read.
To acquire or interpret data from a storage device, from a data medium, or from another source.
reboot.
To reinitialize the execution of a program by repeating the initial program load (IPL) operation.
record.
The smallest distinct set of data bytes that is supplied from a server for processing and recording by a
tape drive, and the smallest distinct set of data to be read from tape, reprocessed, and made available
to a server by a tape drive.
relative humidity.
The ratio of the amount of water vapor actually present in the air to the greatest amount possible at
the same temperature.
reset.
To return a device or circuit to a clear state.
S
SAS.
Serial Attached SCSI (SAS) Interface.
scratch cartridge.
A data cartridge that contains no useful data, but can be written to with new data.
SCSI.
See Small Computer Systems Interface.
SCSI connector.
Located at the rear of the tape drive, the connector that facilitates commands to and from the server,
and to which the internal SCSI cable of an enclosure connects.
66 Dell PowerVault LTO Tape Drive: User's Guide