When should I enable data deduplication on a shared folder or LUN?
Deduplication is a data reduction technique that works by eliminating duplicate copies of repeated data. For shared folders and LUNs containing data with a high level of duplication, such as multiple cloned virtual machines, enabling deduplication can reduce storage space requirements by up to 95%.
However, deduplication uses NAS processor and memory resources. If the data stored in a shared folder or LUN does not contain much duplication, for example libraries, images, and multimedia files, then you should not enable deduplication as it will not conserve enough storage space to warrant the additional NAS resources usage.
The best practice is to organize data with a high level of duplication into one or more shared folders and LUNs, and then enable deduplication on these folders and LUNs only.
Note: When creating a shared folder or LUN, deduplication is only available if “Performance Profile” is set to “VDI” or “Custom”, and thin provisioning is enabled.
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