Service migration is free to use. However, it may involve fees for relay instances and network traffic. This document describes the billable items and billing modes that may be involved when you use service migration.
When the migration destination is a Cloud Virtual Machine (CVM) image, your account balance should be greater than 10 USD to ensure smooth migration. Please top up your account if the balance is insufficient. In most cases, the migration fees are less than 10 USD, but the fees are affected by factors such as disk capacity and migration time. The actual fees incurred shall prevail. Relay Instances
If the migration destination is a Cloud Virtual Machine (CVM) image, a relay instance named do_not_delete_csm_instance will be created under your account after the migration starts. The instance incurs instance fees and cloud disk fees.
Do not reinstall, shut down, or terminate the relay instance or reset its password. It will be automatically terminated by the system after the migration ends.
Network Traffic
Network traffic is generated during online migration, which is billed as follows:
For migration over the public network, if your source server has a bandwidth plan, no additional fees will incur on the source server. The inbound traffic on the destination CVM does not incur fees.
For migration over the public network, if your source server is billed by traffic, traffic fees will incur on the source server. The inbound traffic on the destination CVM does not incur fees.