HP 316095-B21 FW 08.01.00 McDATA EFCM Basic User Manual (620-000240-000, Novem - Page 289

Glossary OpenTrunking operating system Operating System/390 original equipment manufacturer OS OS/390™ OSI OSMS out-of-band management System Interconnection (OSI) device attached to a director or switch port. OpenTrunking is a licensed optional feature that enables load balancing of traffic flows. OpenTrunking monitors the average speed of data traffic through a flow. In the event of traffic congestion, or if traffic on an ISL is disproportionate, a traffic flow is rerouted to a less congested ISL. See also interswitch link. OS. Software that controls execution of applications and provides services 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 communications server, distributed data and file services, parallel Sysplex™ support, object-oriented programming, distributed computing environment, and open application interfaces (D). OEM. A company that has a special relationship with computer producers. 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. See operating system. See Operating System/390. See Open Systems Architecture. See open systems management server. Transmission of management information, using frequencies or channels other than those routinely used for information transfer. P packet In Fibre Channel protocol, Logical unit of information (usually in the form of a data frame) transmitted on a network. It contains a header (with all relevant addressing and timing information), the actual g-31