A dedicated host (DDH) is a physical server. It may shut down when a physical failure occurs. To minimize the impact of these failures on your business, Alibaba Cloud supports automatic instance migration when a DDH failure occurs.
- If you want to enable the automatic instance migration feature when you create a dedicated host, log on to the Elastic Compute Service (ECS) console. In the left-side navigation pane, choose Instances & Images Dedicated Hosts. In the top navigation bar, select a region, and click Create DDH. On the page that appears, select Automatic Instance Migration upon DDH Failure in the DDH Settings section. For information about how to create a dedicated host, see Create a dedicated host.
- For information about how to modify the configuration of automatic instance migration upon DDH failure, see Modify the automatic instance migration configuration for a DDH.
After the automatic instance migration feature is enabled for a dedicated host, the ECS instances on the dedicated host are migrated to another host when a DDH failure occurs. If the automatic instance migration feature is disabled and your dedicated host fails, you can submit a ticket to apply for a new dedicated host.