Glossary
108 Quantum LTO-9 HH SAS User’s Guide
PCC Power control compartment.
PE Parity error. Product engineer.
PM Preventive maintenance.
POR Power-on reset.
port A physical connection for communication between the 3590
and the host processor. The 3590 has two SCSI ports.
Portable Document Format (PDF) A standard specified by Adobe
Systems, Incorporated, for the electronic distribution of
documents. PDF files are compact, can be distributed globally
(via e-mail, the Web, Intranet, or CD-ROM), and can be viewed
with the Acrobat Reader, which is software from Adobe Systems
that can be downloaded at no cost from the Adobe Systems
home page.
PROM Programmable read only memory.
R rack A unit that houses the components of a storage subsystem,
such as the library.
rackmount kit A packaged collection of articles used to install the rack
mounted version of the library.
RAM (Random access memory) A storage device into which data is
entered and from which data is retrieved in a non-sequential
manner.
record A collection of related data or words, treated as a unit.
recording density The number of bits in a single linear track measured
per unit of length of the recording medium.
recoverable error An error condition that allows continued execution
of a program.
ref Reference.
reg Register.
Retention The process or function of tightening the tape onto the
cartridge, if it is sensed that the tape has a loose wrap on the
cartridge.
RPQ Request for price quotation.
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