Limitations & Quota – Cloud Servers – Servers.com Knowledge Base

Certain limitations and quotas are in place to protect the infrastructure, and ensure a high level of security and performance:

Downgrades are not possible. Cloud Servers can only be upgraded to a more powerful plan, with the option to revert the upgrade within 72 hours.
Images are region-specific. An image uploaded to one region can be used only for instances within that region.
Modifying individual resources is not supported. Memory, vCPU, or disk configurations cannot be modified independently. For additional storage, you can attach a virtual drive to the Cloud Server.
Only one public IPv4 address is provided. Each Cloud Server is limited to a single public IPv4 address. Alias addresses are not supported, but an IPv6 address can be ordered separately.
Operating system reinstallation can be done only to the same type. Reinstallation can be performed only from Linux to Linux or from Windows to Windows.
User data can be accessed only via the Public API. Managing and injecting user-specific data into cloud instances can be done only through the Public API.

By default, the following quotas are applied per account:

3 Cloud Servers per region
192 GB of RAM per region
No more than 10 servers per account
Global Private Network (GPN) is available when at least one Dedicated Server is ordered

Limitations