This read-write INTEGER specifies whether a management station reads zoning data from the 'effectiveDB' (the active, in-use zoning database) or the 'copyDB' (a working copy used for pending changes) on this VSAN. Admins set this depending on whether they want to see the live zoning configuration or a draft they're preparing to commit. For example, an admin staging a set of zoning changes before activation would set this to copyDB so their subsequent reads reflect the pending edits rather than the live configuration.