Avago Technologies AcceleRAID 170LP - Manual (Page 61)

Glossary
Manual No. DB11-000024-00 G-3
against which all products are measured and compared is referred to as the
benchmark. Programs can be specially designed to provide measurements
for a particular operating system or application.
Berkeley RAID Levels
A family of disk array protection and mapping techniques described by
Garth Gibson, Randy Katz, and David Patterson in papers written while they
were performing research into I/O systems at the University of California at
Berkeley. There are six Berkeley RAID levels, usually referred to as RAID
Level 0 through RAID Level 5. See also RAID Levels.
Bridge RAID Controller
A device appearing as a single ID in a Storage Area Network (SAN), but
which bridges to multiple devices, typically used to control external RAID
subsystems (compare to Internal PCI-based RAID subsystems, see Internal
RAID Controller). A bridge RAID controller is often referred to as an
External RAID Controller.
Bus
A set of conductors that connect the functional units in a computer and are
the channels through which data is transferred. There are several types of bus
channels, including serial, parallel, PCI, ISA, EISA, and MCA. See also I/O
Bus.
Cables
The physical wires (copper or fibre optic) over which electrical signals are
transmitted. Cables are used to connect peripherals (such as disk arrays) to
computers and servers or to connect peripherals or components (such as tape
drives or CD-ROMs) to each other.
Cache
A temporary storage area for frequently accessed or recently accessed data.
Cache is used to speed up data transfer to and from a disk. See also Caching.