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Download Compaq HSG80 - StorageWorks RAID Array Controller Specifications
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GL–6 Glossary dual-simplex A communications protocol that allows simultaneous transmission in both directions in a link, usually with no flow control. DUART Dual universal asynchronous receiver and transmitter. An integrated circuit containing two serial, asynchronous transceiver circuits. ECB External cache battery. The unit that supplies backup power to the cache module in the event the primary power source fails or is interrupted. ECC Error checking and correction. EDC Error detection code. EIA The abbreviation for Electronic Industries Association. EIA is a standards organization specializing in the electrical and functional characteristics of interface equipment. Same as Electronic Industries Association. EMU Environmental monitoring unit. A unit that provides increased protection against catastrophic failures. Some subsystem enclosures include an EMU which works with the controller to detect conditions such as failed power supplies, failed blowers, elevated temperatures, and external air sense faults. The EMU also controls certain cabinet hardware including DOC chips, alarms, and fan speeds. ESD Electrostatic discharge. The discharge of potentially harmful static electrical voltage as a result of improper grounding. extended subsystem A subsystem in which two cabinets are connected to the primary cabinet. external cache battery See ECB. F_Port A port in a fabric where an N_Port or NL_Port may attach. fabric A group of interconnections between ports that includes a fabric element.
