The type of a dedicated host determines the type and number of ECS instances that you can create on the dedicated host. This topic describes the types of dedicated hosts.

Overview

The type of a dedicated host refers to the specifications of the physical server that corresponds to the dedicated host. These specifications include the CPU model, memory size, local storage space, number of CPU cores, number of CPU sockets, and number of vCPUs.

The predefined ECS instances on a dedicated host can be used in the same scenarios as the ECS instances on a shared host. Therefore, you can create ECS instances on a dedicated host whose type is compatible with the ECS instances. For example, you can create all types of ECS instances that belong to the g6, c6, r6, and ic6 instance families on a general purpose type g6 dedicated host. For more information, see Instance family.

Custom instance types allow you to customize the vCPU-to-memory ratio. For example, you can create custom types of ECS instances on a dedicated host whose type is general purpose overprovisioned type g6s. You can also change the number of vCPUs and the memory size.

Available types

The following table lists the available types of dedicated hosts.
Dedicated host type Supported ECS instance family Number of CPU sockets Physical CPU model Number of CPU cores Number of vCPUs Memory (GiB) Local SSD (GiB)3 Inbound or outbound bandwidth (Gbit/s)4 Inbound or outbound packet forwarding rate (10,000 packets per second)4
General purpose type g7
  • r7
  • g7
  • c7
 2 Intel Xeon Platinum 8369B (Ice Lake) 64 128 1 1024 N/A 64 2400
Memory optimized type r7
  • r7
  • g7
  • c7
 2 Intel Xeon Platinum 8369B (Ice Lake) 64 128 1 512 N/A 64 2400
Compute optimized type c7
  • r7
  • g7
  • c7
 2 Intel Xeon Platinum 8369B (Ice Lake) 64 128 1 256 N/A 64 2400
Security enhanced & memory optimized type r7t
  • r7t
  • g7t
  • c7t
 2 Intel Xeon Platinum 8369B (Ice Lake) 64 128 1 1024 N/A 64 2400
Security enhanced & general purpose type g7t
  • r7t
  • g7t
  • c7t
 2 Intel Xeon Platinum 8369B (Ice Lake) 64 128 1 512 N/A 64 2400
Security enhanced & compute optimized type r7t
  • r7t
  • g7t
  • c7t
 2 Intel Xeon Platinum 8369B (Ice Lake) 64 128 1 256 N/A 64 2400
Security enhanced & general purpose type g6t g6t 2 Intel Xeon Platinum 8269 (Cascade Lake) 52 104 1 384 N/A 32 2400
Security enhanced & compute optimized type c7t c6t 2 Intel Xeon Platinum 8269 (Cascade Lake) 52 104 1 192 N/A 32 2400
Compute overprovisioned type c6s Custom 2 Intel Xeon 8269CY (Cascade Lake) 52 520 2 180 N/A 25 600
General overprovisioned type g6s Custom 2 Intel Xeon 8269CY (Cascade Lake) 52 520 2 372 N/A 25 600
Memory overprovisioned type r6s Custom 2 Intel Xeon 8269CY (Cascade Lake) 52 520 2 750 N/A 25 600
General purpose type g6
  • ic6
  • c6
  • g6
  • r6
 2 Intel Xeon 8269CY (Cascade Lake) 52 104 1 384 N/A 25 600
Compute optimized type c6
  • ic6
  • c6
 2 Intel Xeon 8269CY (Cascade Lake) 52 104 1 192 N/A 25 600
Memory optimized type r6
  • ic6
  • c6
  • g6
  • r6
 2 Intel Xeon 8269CY (Cascade Lake) 52 104 1 768 N/A 25 600
Local SSD type i2 i2 2 Intel Xeon Platinum 8163 (Skylake) 48 80 1 640 17880 25 550
General purpose type g5 g5 2 Intel Xeon Platinum 8163 (Skylake) 48 84 1 336 N/A 25 550
Compute optimized type c5 c5 2 Intel Xeon Platinum 8163 (Skylake) 48 86 1 172 N/A 25 550
Memory optimized type r5 r5 2 Intel Xeon Platinum 8163 (Skylake) 48 86 1 688 N/A 25 550
CPU overprovisioned type v5 v5 2 Intel Xeon Platinum 8163 (Skylake) 48 336 2 672 N/A 25 550
Storage enhanced type g5se g5se 2 Intel Xeon Platinum 8163 (Skylake) 48 70 1 336 N/A 25 550
Network enhanced type g5ne g5ne 2 Intel Xeon Platinum 8163 (Skylake) 48 72 1 288 N/A 25 2400

1. Number of vCPUs for non-overprovisioned type = Number of CPU cores × 2 - Number of vCPUs that are reserved for the dedicated host

2. Number of vCPUs for overprovisioned type = (Number of CPU cores × 2 - Number of vCPUs that are reserved for the dedicated host) × CPU overcommit ratio

3. For more information about local SSDs, see Local disks.

4. The total packet forwarding rate or bandwidth of all the ECS instances types on a dedicated host must be less than that of the dedicated host. For information about the network performance of all the ECS instances, see Instance family.

Retired types

The following table lists the types of dedicated hosts that are retired.

Dedicated host type Supported ECS instance family Number of CPU sockets Physical CPU model Number of CPU cores Number of vCPUs Memory (GiB) Local SSD (GiB) Inbound or outbound bandwidth (Gbit/s) Inbound or outbound packet forwarding rate (10,000 packets per second)
Compute optimized & network enhanced type sn1ne sn1ne 2 Intel Xeon E5-2682 v4 (Broadwell) 32 56 1 112 N/A 10 450
General purpose & network enhanced type sn2ne sn2ne 2 Intel Xeon E5-2682 v4 (Broadwell) 32 56 1 224 N/A 10 450
Memory optimized & network enhanced type sn1ne se1ne 2 Intel Xeon E5-2682 v4 (Broadwell) 32 56 1 480 N/A 10 450