Users Guide

PM
Preventive maintenance.
POR
Power-on reset.
Port
A physical connection for communication between the 3590 and the host processor. The 3590 has 2
SCSI ports.
Portable Document Format (PDF)
A standard that is specied by Adobe Systems, Incorporated, for the electronic distribution of
documents. PDF les are compact, can be distributed globally (by way of email, the web, intranets, or
CD-ROM), and can be viewed with the Acrobat Reader. Acrobat Reader 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 x. A single bugx or group of bugxes 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.
Random Mode
In Random mode, the library allows the server's (host's) application software to select any data
cartridge in any order.
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.
Glossary
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