Avago Technologies MegaRAID SCSI 320-0 (520-0 CH) - Manual (Page 123)

MegaRAID 320 Storage Adapters User’s Guide A-1
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Appendix A
Glossary of Terms
and Abbreviations
Active
Termination The electrical connection required at each end of the SCSI bus,
composed of active voltage regulation and a set of termination resistors.
Ultra SCSI, Ultra2 SCSI, Ultra160 SCSI, and Ultra320 SCSI require
active termination.
BIOS Basic Input/Output System. Software that provides basic read/write
capability. Usually kept as firmware (ROM based). The system BIOS on
the mainboard of a computer is used to boot and control the system. The
SCSI BIOS on your host adapter acts as an extension of the system BIOS.
Configuration Refers to the way a computer is setup; the combined hardware
components (computer, monitor, keyboard, and peripheral devices) that
make up a computer system; or the software settings that allow the
hardware 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.
Differential SCSI A hardware configuration for connecting SCSI devices. It uses a pair of
lines for each signal transfer (as opposed to Single-Ended SCSI which
references each SCSI signal to a common ground).
Domain
Validation Domain Validation is a software procedure in which a host queries a
device to determine its ability to communicate at the negotiated Ultra320
data rate.
EEPROM Electronically Erasable Programmable Read-Only Memory. A memory
chip typically used to store configuration information, as it provides stable
storage for long periods without electricity and can be reprogrammed.
Refer to NVRAM.
External SCSI
Device A SCSI device installed outside the computer cabinet. These devices are
connected together using specific types of shielded cables.