Dedicated Host:View and export DDH information

View DDH details

The Host Details tab shows details of a host, including its ID, name, billing method, machine code, and number of physical CPU cores.

1. Log on 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. On the Dedicated Hosts page, click the Host tab.

5. Find the DDH and click Details in the Actions column.

6. View the DDH details in the panel that opens on the right.

   • To view the ECS instances that run on the DDH, click the Instances tab.

   • To view the properties of the DDH, click the Host Details tab.

     The properties of a DDH include whether automatic deployment and failover are enabled, vCPU usage, memory usage, and the number of sockets.

     Note

     Before you create an ECS instance on a DDH, check the available computing resources, such as vCPUs and memory, to determine whether an ECS instance of the specified ECS instance type can be created. For more information, see Why can't I create an ECS instance on a DDH even though the total available resources on the DDH are sufficient for the ECS instance type?.

Export DDH information

You can export information about all DDHs in a region with one click. This lets you back up DDH information locally or view details from different dimensions, such as host type, vCPU usage, and memory usage, in a single report file.

1. Log on 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. In the upper-right corner of the Dedicated Hosts page, click to export the dedicated host details.

   The exported file is in .csv format, for example, ecs_dedicatedHost_list_cn-hangzhou_2020-07-29.csv.

FAQ

Why can't I create an ECS instance on a DDH even though the total available resources on the DDH are sufficient for the ECS instance type?

Each DDH typically has two CPUs, which correspond to socket 0 and socket 1. To ensure maximum performance, an ECS instance is created on a single socket and does not span multiple sockets.

• If a single socket has enough available computing resources for the specified ECS instance type, the ECS instance is created.

• If no single socket has enough resources for the specified ECS instance type, the creation fails.

  This can happen even if the combined available resources of both sockets are greater than the resources required by the ECS instance type.

The following figure provides an example.

The following table lists the DDH types that support socket-level information display.

Dedicated host type	Number of sockets
Security-enhanced Memory-optimized r7t	2
Security-enhanced General-purpose g7t	2
Security-enhanced Compute-optimized c7t	2
Security-enhanced Compute-optimized g6t	2
Security-enhanced Compute-optimized c6t	2
General-purpose Performance-enhanced g6e	2
General-purpose g7	2
General-purpose g6	2
Memory-optimized Performance-enhanced r6e	2
Memory-optimized r7	2
Memory-optimized r6	2
Compute-optimized Performance-enhanced c6e	2
Compute-optimized c7	2
Compute-optimized c6	2