HP LH4r Integrated HP NetRaid Controller Configuration Guide - Page 135
Write Through
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Glossary memory read. Write-back is efficient, because an entry may be written many times in the cache without a disk access. • Write Through: In a write-through cache, data is written to disk at the same time as it is cached. Write-through is simpler than write-back, because an entry that is to be replaced can be overwritten in the cache, as it will already have been copied to disk. 129
Glossary
129
memory read. Write-back is efficient, because an entry may be written
many times in the cache without a disk access.
•
Write Through
: In a write-through cache, data is written to disk at the
same time as it is cached. Write-through is simpler than write-back,
because an entry that is to be replaced can be overwritten in the cache, as
it will already have been copied to disk.