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COW vs ROW snapshot Technologies

General Tech Technology & Software
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Sam Curran

User

( 4 months ago )

While Im reading about the Snapshot Technology...I found Copy-On-Write (COW) and Redirect-On-Write (ROW) a quite Confusing to Understand the actual Operations they are Committing to...Will Somebody Please Explain me How They are Working Actually...

Thank you

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Nicola Aley

User

( 4 months ago )

COW copies the old value to a separate area in the snapshot before writing the new data in the original place. This means a file will stay contiguous. ROW writes to a new area, and keeps the original data in the snapshot. This saves the copy, so it is faster, but makes files noncontiguous.

what's your interest


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