Upgrade a Shared Tier Cluster
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Overview
MongoDB Realm allows you to upgrade your shared tier cluster (M0, M2, and M5) to a dedicated cluster. Upgrade your cluster before releasing a Realm Sync application by completing the following steps.
Using a shared tier cluster on a production application is not recommended. To avoid data loss, upgrade to a dedicated tier cluster before releasing your application.
When you terminate and re-enable Realm Sync, clients can no longer Sync. Your client must implement a client reset handler to restore Sync. This handler can discard or attempt to recover unsynchronized changes.
Procedure
Shut Down All Running Emulators
Before upgrading your cluster, end any client application's Sync Connection. To do this, shut down all emulators, simulators, and terminals that are running your realm application.
Terminate Realm Sync
To terminate Realm Sync, follow the instructions for Terminating Realm Sync.
Upgrade Your Cluster
Click the Upgrade green button under the Enhance Your Experience heading of the Atlas tab.
Configure your upgraded cluster settings in the following screen and then click Review Changes. To learn more about the pricing of the various Atlas cluster tiers, see the billing page.
Review your upgraded cluster changes, and click the green Apply Changes button.
A blue header will appear, indicating the progress of the cluster migration operation.
Finally, reenable Realm Sync to resume your application development, testing, and roll-out.