A Dedicated Host type determines the ECS instance type family and the number of ECS instances that you can create on a DDH.

A Dedicated Host type is determined on the basis of a scenario, which defines the configurations of physical cores, sockets, memory, and local disks of a DDH. A Dedicated Host type is determined on the basis of a scenario which is used by ECS instance type family on a sharing host. You can create ECS instances of the permitted type family on a DDH and flexibly combine the different instance types until its resources are used out. For example, on a DDH of compute optimized type with enhanced network performance, you can create ECS instances of all sn1ne types. For more information about ECS instance type family, see Elastic Compute Service (ECS). For all the ECS instances running on a DDH, make sure that the packet forwarding rate and the bandwidth capacity of the DDH are not exceeded. Network performance for each instance type, see instance type families.

Currently, the available Dedicated Host types are shown in the following table.

Dedicated Host type Compute optimized type with enhanced network performance General-purpose type with enhanced network performance Memory optimized type with enhanced network performance General-purpose type Compute type Memory type Local SSD disks type
ECS instance type family sn1ne sn2ne se1ne g5 c5 r5 i2
Number of CPUs (Socket) 2 2 2 2 2 2 2
Physical CPU model (2.5 GHz) Intel Xeon E5-2682 v4 (Broadwell) Intel Xeon E5-2682 v4 (Broadwell) Intel Xeon E5-2682 v4 (Broadwell) Xeon Platinum 8163 (Skylake) Xeon Platinum 8163 (Skylake) Xeon Platinum 8163 (Skylake) Xeon Platinum 8163 (Skylake)
Physical CPU cores 32 32 32 48 48 48 48
vCPU cores 56 56 56 84 86 86 80
Memory (GiB) 112 224 448 336 172 688 640
Local SSD disk (GiB) N/A N/A N/A N/A N/A N/A 17880
Bandwidth ( Gbit/s) 10  10   10 25 25 25 25
Packet forwarding rate (Thousand pps) 4,500 4,500 4,500 5,500 5,500 5,500 5,500

vCPU cores = physical CPU cores * 2-vCPU cores reserved by the host

For more information about local SSD disks, see local disks in the ECS Product Introduction.

For all the ECS instances running on a DDH, make sure that the packet forwarding rate and the bandwidth capacity of the DDH are not exceeded. Network performance for each instance type, see instance type families.