Glossary
Scalar i500 User’s Guide 554
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.
S
SAM (SCSI Architecture Model)
An ANSI standard that defines the
generic requirements and overall framework in which other SCSI
standards are defined. New generations of this standard are identified by
a numeric suffix; for example, the second generation standard is SAM2.
SAN (Storage Area Network) A dedicated network that connects storage
devices and servers in a pool, providing consolidated storage and storage
management. Storage interconnects between many initiators and target
devices. The SAN allows for sharing resources (target devices) among
multiple servers (initiators).
SCSI (Small Computer System Interface) A set of standards for a high-
speed, parallel interface that connects processing devices to peripheral
devices, such as storage subsystems. The acronym is pronounced
“scuzzy.”
SCSI ID (Small Computer Systems Interface Address) An address on a
SCSI BUS. Typically there are 16 addresses on a single channel SCSI BUS.
Server A powerful, centralized computer (or program) designed to
provide information to clients (smaller computers or programs) upon
request.
Serviceability A RAS attribute that refers to a component that is
designed to accurately diagnose and report failures, as well as minimize
downtime in a storage solution. See also RAS.
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