ServeRAID M1115 SAS/SATA Controller User’s Guide C-1Appendix C Glossaryof Terms andAbbreviationsactiveterminationThe electrical connection required at each end of the SCSI bus,composed of active voltage regulation and a set of termination resistors.array An array of drives combines the storage space on the drives into a singlesegment of storage space. A hot spare drive does not actively participatein an array.BIOS Acronym for Basic Input/Output System. Software that provides basicread/write capability. Usually kept as firmware (ROM-based). The systemBIOS on the mainboard of a computer boots and controls the system.The BIOS on your host controller acts as an extension of the systemBIOS.configuration Refers to the way a computer is set up, the combined hardwarecomponents (computer, monitor, keyboard, and peripheral devices) thatmake up a computer system, or the software settings that allow thehardware components to communicate with each other.device driver A program that allows a microprocessor (through the operating system)to direct the operation of a peripheral device.domainvalidationDomain Validation is a software procedure in which a host queries adevice to determine its ability to communicate at the negotiated data rate.EEPROM Acronym for Electronically Erasable Programmable Read-Only Memory.It is a memory chip that typically stores configuration information, as itprovides stable storage for long periods without electricity and can bereprogrammed. Refer to NVRAM.external SASdeviceA SAS device installed outside the computer cabinet. These devices areconnected using specific types of shielded cables.Fusion-MPTarchitectureFusion-MPT (Message Passing Technology) architecture consists ofseveral main elements: Fusion-MPT firmware, the Fibre Channel and