20
Intel
®
Raid Controller SRCU41L User Manual
Glossary of Terms and Abbreviations
SCSI Bus
A storage adapter (host adapter) and one or more SCSI peripherals connected by cables in a
linear configuration. The adapter may exist anywhere on the bus, allowing connection of both
internal and external SCSI devices. A system may have more than one SCSI bus by using a
multi-channel adapter or by using multiple 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 storage adapters (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 storage
adapter (host adapter) usually gets the highest ID (7 or 15) giving it priority to control the bus.
Single-Ended
SCSI
A hardware specification for connecting SCSI devices. It references each SCSI signal to a
common ground. This is the most common method (as opposed to differential SCSI, which
uses a separate ground for each signal).
TolerANT
A technology developed and used by Intel to improve data integrity, data transfer rates, and
noise immunity through the use of active negation and input signal filtering.
Ultra SCSI
A standard for SCSI data transfers. It allows a transfer rate of up to 20 Mbytes/s over an 8-bit
SCSI bus and up to 40 Mbytes/s over a 16-bit SCSI bus.
Ultra2 SCSI
A standard for SCSI data transfers. It allows a transfer rate of up to 40 Mbytes/s over an 8-bit
SCSI bus, and up to 80 Mbytes/s over a 16-bit SCSI bus.
Ultra160 SCSI
A standard for SCSI data transfers. It allows a transfer rate of up to 160 Mbytes/s over a 16-
bit SCSI bus.
Ultra320 SCSI
A standard for SCSI data transfers. It allows a transfer rate of up to 320 Mbytes/s over a 16-
bit SCSI bus.
VHDCI
Very High-Density Cable Interconnect. This cable is used to connect external connectors to
your storage adapter.
Table 10. Glossary of Terms and Abbreviations
Term
Definition
