Glossary
Quantum SuperLoader 3A Series User’s Guide
99
metadata following standardized schemes. This metadata is used
first to describe the structure of the file and its play out
structural
metadata
but also to let the user specify its own metadata
annotating the content of the file
descriptive metadata
.
This format is also designed to ensure the interchange of data in a
streaming environment such as data tape storage or networked
communications.
N
native capacity
The capacity of a given media product in its basic
recording format (without the use of data compression).
native mode
Refers to the uncompressed storage capacity of a media
subsystem. (See “native capacity”.)
O
OEM
Original Equipment Manufacturer.
operational pattern
This term is used to designate the complexity of an
MXF file. It describes the possibilities for building the
material
packages
.
overwrite
To write data on top of existing data thus erasing the original
data.
P
parity
A method of generating redundant information that can be used
to detect errors in stored or transmitted data.
peak transfer rate
The maximum speed with which information moves
inside a tape drive or between drive and host. Usually measured
in megabytes per second.
performance
A measure of the speed of the drive during normal
operation. Factors affecting performance are seek times, transfer
rate, and command overhead.
peripheral
A device added to a system as a complement to the basic
central processing unit (CPU), such as a disk drive, tape drive, or
printer.
POH
Power-on Hours. The unit of measurement for mean time
between failure (MTBF), expressed as the number of hours that
the drive is powered on. See MTBF.
POST
Power-on Self Test. Diagnostic programs, loaded automatically
by the BIOS, that perform basic tests on the major system
components, such as memory, cartridge and magazine