HP StorageWorks 2/140 embedded web server user guide - Page 141
expansion port, Event Log, information message, warning, message, Enterprise Systems Architecture
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Glossary Enterprise Systems Architecture ESA™. A computer architecture introduced by IBM in 1988 as ESA/370. The architecture added access registers to improve virtual memory management and increase storage from 2 gigabyte to 6 terabytes. The architecture was enhanced with the introduction of ESA/390 in 1990 (D). Enterprise Systems Connection ESCON™. An IBM architecture, technology, and set of products and services introduced in 1990 that provides a dynamically connected environment using fiber-optic cables as the data transmission medium (D). Enterprise Systems Connection Director ESCON™ Director. A device that provides connectivity capability and control for attaching any two links to each other through the ESON channel. Specifically, any of the hardware devices provided for interconnecting IBM-compatible mainframe equipment through the proprietary ESCON channel connection. IBM's model numbers for ESCON Directors include the 9031 and 9033. E_Port See expansion port. erase To remove electrically or magnetically stored data, leaving the space where the data was stored unoccupied (D). error-detect time-out value E_D_TOV. The time the switch waits for an expected response before declaring an error condition. error log See Event Log. error message Indication that an error has been detected (D). See also information message; warning message. ESA™ See Enterprise Systems Architecture. ESCON™ See Enterprise Systems Connection. Ethernet A widely implemented local area network (LAN) protocol that uses a bus or star topology and serves as the basis for the Institute of Electrical and Electronics Engineers (IEEE) 802.3 standard, which specifies the physical and software layers. embedded web server user guide Glossary-11
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