Quantum sdlt 220 Guía Del Usuario

Glossary

SDLT 220 and SDLT 320 Product Manual

G-8

March 2004

81-85002-01

MB

Megabyte. A unit of measure equal to 1 million bytes.

Metal Particle 
(MP) Tape

A magnetic recording media in which a flexible base is coated 
with a mixture of magnetic particles and a bonding agent.

MRC Heads

Magneto Resistive Cluster Heads. A cluster of small, cost-
effective Magneto Resistive (MR) tape heads packed densely 
together.

MSB

Most Significant Bit.

MSE

Multimode Single-Ended. A signaling alternative for multimode 
SCSI devices that allows multimode SCSI devices to operate 
when SE SCSI devices are present on the bus.

MTBF

The probable average number of service hours between failures.

Native 
Capacity

The capacity of a given media product in its native recording 
format (without the use of data compression).

Native Mode

Refers to the uncompressed storage capacity of a tape subsystem. 
(See Native Capacity.)

Parity

A method of generating redundant information that can be used 
to detect errors in stored or transmitted data.

Peripheral

A device added to a system as a complement to the basic CPU, 
such as a disk drive, tape drive, or printer.

POS

Pivoting Optical Servo



. An optically-assisted servo system that 

combines high-density magnetic read/write data recording with 
laser servo guiding.

Positive 
Engagement

A highly robust, solidly engineered tape leader-buckling 
mechanism for heavy-duty-cycle automated environments.

POST

Power On Self Test. When power is applied to the tape drive, it 
performs a POST.

PRML

See Advanced PRML.