[Home](./index.md) > [bitburner](./bitburner.md) > [Cloud](./bitburner.cloud.md) > [upgradeServer](./bitburner.cloud.upgradeserver.md) ## Cloud.upgradeServer() method Upgrade a cloud server's RAM. **Signature:** ```typescript upgradeServer(host: string, ram: number): boolean; ``` ## Parameters

Parameter	Type	Description
host	string	Hostname/IP of the cloud server to upgrade.
ram	number	Amount of RAM of the cloud server, in GB. Must be a power of 2 (2, 4, 8, 16, etc.). Maximum value of 1048576 (2^20).

**Returns:** boolean True if the upgrade succeeded, and false otherwise. ## Remarks RAM cost: 0.25 GB