In order to simplify management and apply uniform settings to all of your Synology NAS servers, you can organize managed servers into server groups and apply policies to each server or server group. The page at CMS > Group & Policy displays the current hierarchy of policies, server groups, and managed servers.
A policy is a list of rules, where each rule is a specified settings preference, such as Enable Windows File Service or Enable SSH service. When a policy is applied to a managed server or server group, the preferences defined by the policy rules are applied to the server or server group. This allows you to apply uniform settings to multiple servers without having to log into each server individually.
When multiple policies are applied to a managed server or server group, you might want to adjust the priority of policies to make sure the correct policy takes effect. To do so, select the managed server or server group and click Edit. On the Policies tab, you can adjust the priority of policies using the Up and Down buttons.
Server groups allow you to manage and apply policies to multiple servers simultaneously. The parent group All Servers exists by default. New server groups can be created in All Servers, allowing you to apply different policies to different groups of managed servers.
When the policy of a child server or server group conflicts with the policy of a parent server group, the policy of the child server or server group takes priority.
Management permissions of servers or server groups can be delegated to users or groups. When a user opens CMS, he is able to view and modify the settings of servers to which he has been delegated management permissions (such as the settings at Server, Notifications, Logs, and Group & Policy).
Users belonging to the administrators group can view and modify settings of all managed servers. Users who do not belong to administrators group can only view and modify settings of managed servers to which they have been delegated management permissions.