User's Guide

Glossary
Scalar i500 User’s Guide 548
OS (Operating System)
A control program for a computer that allocates
computer resources, schedules tasks, and provides the user with
a way to access the resources.
P
Partition
An abstraction of an underlying physical library that may
present a different personality, capacity, or both to a host. It is a
representation of real physical elements, combined to create a
grouping that is different from the physical library. Also a logical
portion of the physical library that is viewed by the host as if it is
a complete library. Partitions present the appearance of multiple,
separate libraries for purposes of file management, access by
multiple users, or dedication to one or more host application.
Pathname A list of directories separated by slashes (/) and ending with
the name of a directory or nondirectory file. A pathname is used
to trace a path through the file structure to locate or identify a
file.
Picker The robotic hand that handles cartridges.
Point to Point A Fibre Channel topology that consists of a dedicated
connection between two devices: a sending device and a
receiving device.
R
Rackmount
An industry standard communication and computer
equipment rack cabinet.
RAS (Reliability, Availability, and Serviceability) Three key attributes of
computing system quality design. See Reliability, Availability, and
Serviceability. An infrastructure to support serviceability in order
to identify, diagnose, and fix problems within the system. This
approach is designed to address the ability of service personnel
and customers to diagnose and resolve problems identified
within the system. Additionally, configuration is addressed to
support detection of hardware configuration compatibility issues
and persistence across FRUs.
RAS ticket A ticket that alerts service personnel and customers of an
issue with the library. RAS tickets identify which library
components are most likely causing the issue. When possible, a
RAS ticket provides instructions for resolving the issue.
Reliability A RAS attribute that is designed to prevent failure of a storage
solution. See also RAS.