The filter redirects the read operation to the appropriate chunks that constitute the stream for that file in the chunk store.
When optimized files are read, the file system sends the files with a reparse point to the Data Deduplication file system filter (Dedup.sys). Replace the original file stream of now optimized files with a reparse point to the chunk store.Place chunks in the chunk store and optionally compress.Scan the file system for files meeting the optimization policy.Seamlessly move those portions, or chunks, with special pointers called reparse points that point to a unique copy of that chunk.Identify repeated patterns across files on that volume.Once enabled for a volume, Data Deduplication runs in the background to: Users and applications that access data on an optimized volume are completely unaware that the files they are accessing have been deduplicated. Optimization should not change access semantics All data is written unoptimized to the disk and then optimized later by Data Deduplication. Optimization should not get in the way of writes to the diskĭata Deduplication optimizes data by using a post-processing model.
#Pcworld file deduplicator windows
How does Data Deduplication work?ĭata Deduplication in Windows Server was created with the following two principles: This document describes how Data Deduplication works. Applies to: Windows Server 2022, Windows Server 2019, Windows Server 2016, Azure Stack HCI, versions 21H2 and 20H2
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