FAQs for dedicated hosts

What elements do I need to create a dedicated host?

Dedicated hosts in IBM Cloud VPC are created as part of a dedicated group. When you use IBM Cloud console to create a dedicated host, you create an initial dedicated group as part of the dedicated host provisioning process. If you are using the IBM Cloud CLI to create a dedicated host, you must first create a dedicated group. For more information, see Creating dedicated hosts and groups.

How much am I charged for a dedicated host?

When you create a dedicated host, you are billed by the usage of the host on an hourly basis. You are not billed for the vCPU and RAM associated with instances that are running on the host.

Why can I create only one dedicated host per region?

When you provision dedicated hosts, the vCPU associated with your dedicated hosts counts toward the total vCPU for virtual server instances per region. The standard quota for virtual servers vCPU is 200. The dedicated host profile uses 152 vCPUs. To increase your vCPU quota, contact Support. For more information, see Quotas.

What are the advantages of provisioning instances on a dedicated group versus a dedicated host?

Provisioning instances on a dedicated group allows your instances to move between hosts if the need ever occurs. For example, if you want to decrease the size of your dedicated host group, you can stop instances on one of the hosts and disable placement for the host that you want to decommission. Then, when you restart the instances they are started on another host in the group if capacity is available.

How much instance storage is available on my dedicated host?

In IBM Cloud console, if you look at the details page of a dedicated host that was provisioned with an instance storage profile, you see 6.4 TBs of instance storage. The description of the dedicated host shows 5.7 TBs. Because of the way virtual server instances and their associated profiles are packed on dedicated hosts, the most instance storage you can use on a dedicated host is 5.7 TBs. You are charged for 5.7 TBs of instance storage.

What happens if my dedicated host fails?

In case of a hardware failure, the dedicated host and the instances that are running on it are migrated to a new hardware node.

If a host hardware failure occurs, the instances that you initially provisioned to a dedicate host group might be migrated to another existing dedicated host in the group if capacity is available.

For more information, see Viewing notifications and Host failure recovery policies.