Dedicated Host:Create a dedicated host

Procedure

1. Log in to the ECS console.

2. In the left-side navigation pane, choose Instances & Images > > Dedicated Hosts.

3. In the upper-left corner of the page, select a region and resource group.

4. Click Create DDH.

   If this is the first time you are creating a dedicated host, click Create Now.

5. On the Create DDH page, configure the following parameters.

   Parameter	Description	Example
   Billing Method	Select a billing method: Subscription or Pay-as-you-go. For more information about billing, see Billing overview.	subscription
   Region and Zone	Select the region and availability zone where you want to create the DDH. For more information about regions and availability zones, see Regions and availability zones.	China (Beijing)
   Host Type	The dedicated host type determines the ECS instance families and the number of instances the DDH can host. Overprovisioned dedicated host types allow you to customize the vCPU-to-memory ratio for flexible resource allocation when you create ECS instances. For more information about dedicated host types, see Dedicated host types. Important ECS instances on a local SSD-type dedicated host (such as i2) do not support self-service migration or automatic migration upon host failure. If a local SSD-type dedicated host fails, you can submit a ticket to request a manual migration. However, data on the local SSDs is lost after the migration.	Compute-optimized c7
   Host Name	Enter a name for the dedicated host. The name must be 2 to 128 characters in length. It must start with a letter or a Chinese character and can contain digits, periods (.), underscores (_), colons (:), and hyphens (-).	DDH-test
   Quantity	Select the number of DDHs to purchase.	1
   Tag	Add tags to the DDH. Tags are case-sensitive key-value pairs that help you categorize and manage resources. For more information, see Tags.	Use the default value
   Resource Group	Resource groups help you organize your cloud resources by dimensions such as purpose, permission, and owner, which simplifies resource management for multiple users and projects. For more information about use cases of resource groups, see Resource groups.	Use the default value
   Other Settings	The availability of these features depends on the selected dedicated host type. Automatic Deployment: Allow automatic deployment: The system automatically deploys ECS instances on the DDH. For more information, see Configure automatic deployment. Disallow automatic deployment: You must manually deploy ECS instances on the DDH. When you create an ECS instance, you must specify a DDH. Default value: Allow automatic deployment. Automatic migration upon host failure: Enable automatic migration upon host failure: If a DDH fails, the system automatically migrates its ECS instances to a healthy DDH. Disable automatic migration upon host failure: If a DDH fails, you must submit a ticket to request a healthy DDH as a replacement. Default value: Enable automatic migration upon host failure. You can change this setting after the DDH is created. For more information, see Configure automatic migration upon host failure. Important Local SSD-type DDHs do not support automatic migration upon host failure. CPU overprovisioning ratio: This feature is supported only by overprovisioned dedicated host types. The CPU overprovisioning ratio affects the number of available vCPUs on a DDH. The number of available vCPUs is calculated as: Number of physical CPU cores × 2 × CPU overprovisioning ratio. For workloads that are not sensitive to CPU performance stability, such as development and testing environments, you can increase the CPU overprovisioning ratio to obtain more vCPUs. This lets you deploy more ECS instances of the same specifications and reduces the per-unit deployment cost. For example, a g6s dedicated host has 52 physical CPU cores. If you set the CPU overprovisioning ratio to 4, the total number of vCPUs is 416 after the DDH is created. Important For more information about overprovisioned dedicated host types, see Dedicated host types.	Use the default value
   Duration	Select a subscription duration.	1 month
   Auto-renewal	Select whether to enable auto-renewal for the subscription. Monthly subscription: The renewal period is 1 month. Yearly subscription: The renewal period is 1 year.	Disabled

6. Review the configurations, read and agree to the terms of service, and then click Confirm Order.

7. Follow the on-screen instructions to complete the payment.