Mylex DAC960PG Guia de Instalação descarregar pdf (Página 101)

Glossary

Manual No. 771971 Glossary-11

Write Back Cache

Refers to a caching strategy whereby write operations result in a completion

signal being sent to the host operating system as soon as the cache (not the

disk drive) receives the data to be written. The target SCSI drive will receive

the data at a more appropriate time, in order to increase controller

performance. An optional cache battery backup can be used to protect

against data loss as a result of a power failure or system crash.

Write Through Cache

Refers to a caching strategy whereby data is written to the SCSI drive before

a completion status is returned to the host operating system. This caching

strategy is considered more secure, since a power failure will be less likely to

cause loss of data. However, a write through cache results in a slightly lower

performance.

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Mylex DAC960PG Guia de Instalação Página 101