What is the best way to convert an existing workspace in Relativity to a repository...

The correct answer is D. Install the Repository application to the workspace. Relativity’s official repository workspace documentation states that when installed to an existing workspace, the RelativityOne repository workspace application converts the workspace into a streamlined repository workspace for early case assessment and lower-cost storage of data not actively under review. The documentation also provides a dedicated section called Converting a review workspace to a repository workspace , where the conversion steps are simply to access the RelativityOne Repository Workspace application from the Application Library and install the application to the desired workspace .

This makes option D the exact documented conversion method. Option A describes moving data to another repository workspace, which is a different workflow and does not convert the existing workspace itself. Option B involving ARM restore is used in some repository-related workflows, especially around templates or archived workspaces, but it is not the primary documented method for converting an existing workspace. Option C is incorrect because repository mode is not enabled by editing a status field. Relativity also notes that if you convert an existing review workspace by installing the Repository application, the workspace remains classified for billing as a review workspace until the beginning of the next calendar month, which further confirms that application installation is the actual conversion mechanism.