User's Guide

Glossary
Scalar i500 User’s Guide 549
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.
Setup wizard A tool for initially configuring the library. It appears the
first time the user starts the library. However, it can be used to
modify configurable items anytime after the initial configuration.
Sled See UDS.
SMI-S (Storage Management Initiative Specification) An industry
standard SMI-S application programming interface (API)
developed by SNIA that facilitates the management of multi-
vendor devices in a storage area networks (SANs) environment.
Snapshot A rapid, point-in-time image of a volume created initially on
the same disk as the original by duplicating metadata rather than
copying the full data set. Snapshots are often used to protect
against data corruption (viruses, etc.) or to create test or pre-
production environments. Snapshots are also often used as a first
step for creating non-disruptive point-in-time backups, and for
copying datasets to a second disk to create a full duplicate copy
of the volume. Snapshots are created on disk, and in the same