Though you are asked to choose a predefined profile at creation, you are free to personalize it once it has been delivered. You can increase its performance, or scale it back if you overestimated your needs. You can: Increase or decrease the number of CPU cores Increase or decrease the amount of RAM Add additional volumes (disks) to your servers Increase the size of a specific volume (it is not possible, however, to reduce the size of a volume. For this, you must create a smaller one and copy the data to it). Add one or more additional public IP addresses (IPv4/v6 or IPv6 only). You can attach up to 4 IPs to a server.