Change plan (upgrade / downgrade)

Changing a plan adjusts the resources allocated to your server (RAM, CPU, slots) without touching the files. It’s instant and transparent for players: no IP to change, no files to move.

Cause / The problem

A server that lags at peak hours is short on RAM. Conversely, an inactive server on a large plan costs too much. Changing the plan lets you size resources to actual need without starting over from scratch.

Solution

1. Log in to your onesubnet client area (billing.onesubnet.com or via the Billing link in the panel).
2. Open the service page for the relevant service: Services → My Services → click the server.
3. Choose Change Package in the Management side menu.
4. Select the target plan:
   • Upgrade (moving up): more RAM, more CPU, more slots. Useful when the server saturates at peak.
   • Downgrade (moving down): fewer resources, cheaper. First check that the RAM in use fits within the new plan.
5. Check the proration: the change is billed pro-rata for the remaining period (or a credit if downgrading). The breakdown is shown before you confirm.
6. Confirm. Application is automatic:
   • The plan is updated in the panel within a few minutes.
   • Files, IP, ports, and configs are preserved.
7. For a RAM upgrade, adjust the Java limits (-Xmx for Minecraft) in Variables to take advantage of the new memory. Otherwise the server keeps running with the old limit.
8. For a downgrade, first lower -Xmx below the new maximum, restart, and only then perform the downgrade. A server that asks for more RAM than the new plan allows will crash-loop.
9. Monitor for 24-48 h after the change: CPU, RAM, latency. Adjust if needed.

Changing plan causes no data loss and no IP change. For a risky downgrade, take a manual backup first — in case the server crashes on restart in the new configuration.