Network Requirements for Server Migration

Background

A server migration involves two types of traffic: control flow and data flow.

• Control flow refers to the communication between the source server and cloud service management planes. To ensure a smooth migration, verify if there are any restrictions on the outbound traffic from the source server. Additionally, confirm that the source server can access the following cloud services via their domain names: SMS, IAM, ECS, EVS, VPC, and IMS.
• Data flow refers to data transmission from the source server to the target server. To ensure smooth data transmission, confirm that the security group of the target server allows traffic from the source server's IP address over the specified migration ports. If the source server cannot directly access the Internet or cannot communicate with the target server, a proxy server must be configured. In this case, consider the following factors:
  • The proxy server can correctly forward traffic from the source server.
  • The proxy server's security group is configured to allow traffic from the source server's IP address over the proxy port.

For General Migration Scenarios

Internet access is required for migration using MgC.

1. Install Edge in the intranet environment. Edge must be able to access the source servers to be migrated. For details, see Installing Edge for Windows.
2. Complete steps 2 to 5 described in Migrating On-premises Servers to Huawei Cloud Using MgC.
   

   Ensure that the security group of the target server allows access from the source servers over the specified migration ports. For details about how to configure security group rules, see How Do I Configure Security Group Rules for Target Servers?

3. Create a server migration workflow.
   • If the source servers can access the Internet, set the migration network to Public.
     Figure 1 Migration over the Internet
     
   • If the source servers cannot access the Internet, prepare a proxy server that can access the Internet and install proxy software. For details, see step 1 in How Do I Configure a Source Server to Access Huawei Cloud Through a Proxy? The network requirements for the proxy server are as follows:
     • Regardless whether the proxy server is on the source intranet environment or on the cloud, it must be able to access the source servers to be migrated over an intranet.
     • The proxy server must be configured to allow inbound traffic from the source servers over the proxy port.
     After the proxy server is configured, set the migration network to Private, and enter the private IP address of the proxy server and the port specified for the proxy software.

     Figure 2 Migration over a private network
     

For a Scenario Where the Source Server Has No Internet Access and Cannot Communicate with the Target Server

SMS is recommended in this migration scenario. You need to prepare a proxy server for forwarding control traffic and data traffic. For details, see Network Configurations for Different Migration Scenarios.