Acer AcceleRAID 170 User Manual

Glossary

Manual No. 775064

G-3

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.

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 to each other. 

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.

Refers to an operation where all unwritten blocks in a Write-Back Cache are 
written to the target disk. This operation is necessary before powering down 
the system.

Represents the size of the data “chunk” that will be read or written at one 

time, and is set in conjunction with stripe size. Under RAID EzAssist

TM

, the 

cache line size (also known as Segment Size) should be based on the stripe 
size you selected. The default segment size for Mylex RAID controllers is 
8K.

Allows data to be stored in a pre-designated area of a disk or RAM. Caching 
speeds up the operation of RAID systems, disk drives, computers and 
servers, or other peripheral devices. 

Compact Disk-Read Only Memory, a removable read-only storage device, 
similar to an audio compact laser disk, holding up to 640MB of data.