Dell PowerVault TL4000 - Manual (Page 294)

Portable Document Format (PDF)
A standard that is specified by Adobe Systems, Incorporated, for the
electronic distribution of documents. PDF files are compact, can be
distributed globally (by way of email, the web, intranets, 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.
Private key
A cryptographic key that is used to decrypt a message.
PROM
Programmable read only memory.
PS Power supply.
PTF Program temporary fix. A single bugfix or group of bugfixes that are
distributed in a form ready to install for customers.
PWR Power.
R
rack A unit that houses the components of a storage subsystem, such as the
library.
rackmount kit
A packaged collection of articles that are used to install the rack mounted
version of the library.
RAM Random access memory.
Random access memory
A storage device into which data is entered and from which data is
retrieved in a nonsequential manner.
RAS Reliability, availability, and serviceability.
record A collection of related data or words, which are 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.
reinventory
To inventory again.
retension
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.
RFC (Request for Comments)
Request for Comments (RFC) documents are a series of memoranda, which
encompasses new research, innovations, and methodologies applicable to
Internet technologies.
RH Relative humidity.
I-14 Dell PowerVault TL2000 Tape Library and TL4000 Tape Library User's Guide