![]() This is because the garbage collection job may result in many changes in the chunk store, if there were many file deletions since the last garbage collection job ran. After garbage collection, a full backup could be performed on the volume. This is configured by default to run weekly. Garbage collection should be performed on the chunk store to remove no-longer-used chunks.The first time deduplication is performed on a volume, a full backup should be performed immediately afterwards.Reparse points (that are not data deduplication reparse points).Volumes approaching or larger than 64 TB in size.ĭeduplication skips over the following files:.Files approaching or larger than 1 TB in size.Cluster shared volume file system (CSVFS) for non-VDI workloads or any workloads on Windows Server 2012.Cluster shared volume file system (CSVFS) supporting virtual desktop infrastructure (VDI) workloads beginning with Windows Server 2012 R2.Windows Server operating systems beginning with Windows Server 2012.Requirements for Data Deduplicationĭata deduplication is supported only on the following: Since Mac OS X does not support writing to Windows formatted NTFS volumes. The data deduplication feature's garbage collection job reclaims the unreferenced chunks. Tuxera NTFS for Mac is a read/write file system driver that provides. When an optimized file is deleted from the data deduplication-enabled volume, its reparse point is deleted, but its data chunks are not immediately deleted from the chunk store. When its size reaches about 1 GB, that container file is sealed and a new container file is created. New chunks are appended to the current chunk store container. The chunk store consists of one or more chunk store container files. (This minimum amount of time is set by user-configurable policy.) Only files that have not been changed for a minimum amount of time are optimized. When new files are added to the volume, they are not optimized right away. Additional free space (because the optimized files and chunk store occupy much less space than they did before they were optimized). ![]() ![]() On the File menu, click Add-Remove Snap-in (CTRL+M), and then select Group Policy Object Editor. Chunk store (the optimized file data, stored as chunks packed into container files) To enable controls for read and write access to removable devices or media, follow these steps: Press the Windows key and R to open the Run menu.Optimized files (stored as reparse points).Unoptimized files that are not in policy (files that are skipped over by data deduplication).Replace each file with a reparse point containing references to its data chunks.Īfter a volume is data deduplication-enabled and optimized, it contains the following:.Replace redundant copies of each chunk with a reference to a single copy.Segment the data in each file into small variable-sized chunks.This makes it possible to store more file data in less space on the volume.ĭata deduplication optimizes the file data on the volume by performing the following steps: Data deduplication finds and removes duplication within data on a volume while ensuring that the data remains correct and complete. ![]()
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