McDATA 316095-B21 - StorageWorks Edge Switch 2/24 Installation And Service Manual page 582

Glossary
open systems mode
operating mode
operating system
Operating System/390
optical cable
optical drive backup
optical fiber
connector
ordered set
original equipment
manufacturer
OS/390™
g-38 McDATA® Sphereon 3032 and 3232 Fabric Switches Installation and Service Manual
The mode that is used for McDATA or open fabrics. See also
ing mode; S/390
In directors or switches, in managed products, a selection between
s/390 and open systems mode. See also
mode.
OS. Software that controls execution of applications and provides ser-
vices such as resource allocation, scheduling, I/O control, and data
management. Most operating systems are predominantly software,
but partial hardware implementations are possible (D, T).
OS/390™. An integrated, open-enterprise server operating system
developed by IBM that incorporates a leading-edge and open com-
munications server, distributed data and file services, parallel Sys-
plex™ support, object-oriented programming, distributed computing
environment, and open application interfaces (D).
Single fiber, multiple fibers, or a fiber bundle in a structure built to
meet optical, mechanical, and environmental specifications (D, E). See
also jumper cable;
A data backup system that uses rewriteable optical cartridges (ROCs)
as the storage medium.
Synonymous with connector.
In Fibre Channel protocol, four 10-bit characters (a combination of
data and special characters) providing low-level link functions, such
as frame demarcation and signaling between two ends of a link. It
provides for initialization of the link after power-on and for some
basic recovery functions.
OEM. A company that has a special relationship with computer pro-
ducers. OEMs buy components and customize them for a particular
application. They sell the customized computer under their own
name. OEMs may not actually be the original manufacturers. They
are usually the customizers and marketers.
OS See operating system.
See Operating System/390.
mode.
trunk cable. Synonymous with
operat-
open systems mode; S/390
fiber-optic cable.