Strategy 9.3 introduces Lean Objects, a new, significantly more compact form of object representation in the metadata tables. All new objects are created in this format, and existing objects are converted to the new format as they are saved. Selecting Lean Objects migration converts all objects in the repository to the new format at once.
Be aware that the Lean objects migration modifies all your metadata objects to use the new object representation. This migration can require a significant amount of time and resources to complete.
Lean Objects migration decreases the amount of disk space used by your objects. However, the migration causes all objects in your projects to be resaved. Depending on your database transaction logging policy, this may cause a temporary increase in the size of your metadata database.
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