Port Number | See Port Address. |
RAM | Random Access Memory. The computer’s primary working memory in |
| which program instructions and data are stored and are accessible to the |
| CPU. Information can be written to and read from RAM. The contents of |
| RAM are lost when the computer is turned off. |
ROM | Read Only Memory. Memory from which information can be read but not |
| changed. The contents of ROM are not erased when the computer is |
| turned off. |
SCSI | Small Computer System Interface. A specification for a |
| peripheral bus and command set. The original standard is referred to as |
| |
| The current SCSI specification which adds features to the original |
| |
SCSI Bus | A host adapter and one or more SCSI peripherals connected by cables |
| in a linear chain configuration. The host adapter may exist anywhere on |
| the chain, allowing connection of both internal and external SCSI |
| devices. A system may have more than one SCSI bus by using multiple |
| host adapters. |
SCSI Device | Any device that conforms to the SCSI standard and is attached to the |
| SCSI bus by a SCSI cable. This includes SCSI host adapters and SCSI |
| peripherals. |
SCSI ID | A way to uniquely identify each SCSI device on the SCSI bus. Each |
| SCSI bus has eight available SCSI IDs numbered 0 through 7 (or 0 |
| through 15 for Wide SCSI). The host adapter usually gets ID 7 giving it |
| priority to control the bus. |
SDMS | Storage Device Management System. An LSI Logic software product that |
| manages SCSI system I/O. |
STA | SCSI Trade Association. A group of companies that cooperate to |
| promote SCSI parallel interface technology as a viable mainstream I/O |
| interconnect for commercial computing. Refer to their web site at |
| www.scsita.org for more detailed information. |
Glossary of Terms and Abbreviations |