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General-Purpose DeHs

Overview

General-purpose DeHs can accommodate ECSs with regular workloads and short-term workload surges. They use a CPU-unbound scheduling scheme. vCPUs are randomly allocated to idle CPU hyper threads based on the system loads. If traffic loads are light, the computing performance is high. However, if traffic loads are heavy, vCPUs of different ECSs compete for physical CPU resources, resulting in unstable computing performance.

General-purpose DeHs are classified into general, s2, s2-medium, and s3 types.

• DeHs of the general type can be used to deploy S1, C1, C2, and M1 ECSs. DeHs of the general type can provide generic vCPU performance and improve performance based on workload requirements, offering higher performance in a short term.
• DeHs of the s2 type can be used to deploy the S2 ECSs. The s2 DeHs use the latest-generation Intel® Xeon® Skylake CPUs, providing better cost-effectiveness.
• The s2-medium DeHs are similar to s2 DeHs and can be used to deploy the S2 ECSs.
• S3 ECSs can be deployed on s3 DeHs.

DeH Specifications

Table 1 Specifications of general DeHs

Flavor Type	Number of Sockets	Number of Cores per Socket	Hardware Specifications	Number of vCPUs
general	2	12	CPU: Intel® Xeon® Processor E5-2658A v3 (30 MB cache, 2.20 GHz) Intel® Xeon® Processor E5-2658 v4 (35 MB Cache, 2.30 GHz) Memory: 264 GB (or 270,336 MB)	72

Table 2 Specifications of s2 DeHs

Flavor Type	Number of Sockets	Number of Cores per Socket	Hardware Specifications	Number of vCPUs
s2	2	22	CPU: Intel® Xeon® Processor Gold 6161 (30.25 MB Cache, 2.20 GHz) Memory: 704 GB (or 720,896 MB)	144

Table 3 Specifications of s2-medium DeHs

Flavor Type	Number of Sockets	Number of Cores per Socket	Hardware Specifications	Number of vCPUs
s2-medium	2	12	CPU: Intel® Xeon® Processor Gold 5118 (16.5 MB L3 Cache, 2.30 GHz) Memory: 328 GB (or 335,872 MB)	72

Table 4 Specifications of s3 DeHs

Flavor Type	Number of Sockets	Number of Cores per Socket	Hardware Specifications	Number of vCPUs
s3	2	26	CPU: Intel Cascade Lake 6278 (frequency: 2.60 GHz, Turbo frequency: 3.50 GHz) Memory: 702 GB (or 718,848 MB)	264

Number of vCPUs = (Number of sockets x Number of cores x Number of single-core threads - CPU overheads) x CPU overcommitment ratio

• general DeHs

  vCPUs = (2 x 12 x 2 - 12) x 2 = 72

• s2 DeHs

  vCPUs = (2 x 22 x 2 - 16) x 2 = 144

• s2-medium DeHs

  vCPUs = (2 x 12 x 2 - 12) x 2 = 72

• s3 DeHs

  vCPUs = (2 x 26 x 2 - 16) x 3 = 264

ECSs Allowed on DeHs

Table 5 ECS flavors allowed on general DeHs

ECS Flavor	vCPUs	Memory (RAM in GB)
s1.medium	1	4
s1.large	2	8
s1.xlarge	4	16
s1.2xlarge	8	32
s1.4xlarge	16	64
s1.8xlarge	32	128
c1.medium	1	1
c1.large	2	2
c1.xlarge	4	4
c1.2xlarge	8	8
c1.4xlarge	16	16
c1.8xlarge	32	32
c2.medium	1	2
c2.large	2	4
c2.xlarge	4	8
c2.2xlarge	8	16
c2.4xlarge	16	32
c2.8xlarge	32	64
m1.medium	1	8
m1.large	2	16
m1.xlarge	4	32
m1.2xlarge	8	64
m1.4xlarge	16	128

Table 6 ECS flavors allowed on s2 DeHs

ECS Flavor	vCPUs	Memory (RAM in GB)
s2.medium.1	1	1
s2.large.1	2	2
s2.xlarge.1	4	4
s2.2xlarge.1	8	8
s2.4xlarge.1	16	16
s2.8xlarge.1	32	32
s2.medium.2	1	2
s2.large.2	2	4
s2.xlarge.2	4	8
s2.2xlarge.2	8	16
s2.4xlarge.2	16	32
s2.8xlarge.2	32	64
s2.medium.4	1	4
s2.large.4	2	8
s2.xlarge.4	4	16
s2.2xlarge.4	8	32
s2.4xlarge.4	16	64
s2.8xlarge.4	32	128
s2.medium.8	1	8
s2.large.8	2	16
s2.xlarge.8	4	32
s2.2xlarge.8	8	64
s2.4xlarge.8	16	128
s2.8xlarge.8	32	256

Table 7 ECS flavors allowed on s2-medium DeHs

ECS Flavor	vCPUs	Memory (RAM in GB)
s2.medium.1	1	1
s2.large.1	2	2
s2.xlarge.1	4	4
s2.2xlarge.1	8	8
s2.4xlarge.1	16	16
s2.8xlarge.1	32	32
s2.medium.2	1	2
s2.large.2	2	4
s2.xlarge.2	4	8
s2.2xlarge.2	8	16
s2.4xlarge.2	16	32
s2.8xlarge.2	32	64
s2.medium.4	1	4
s2.large.4	2	8
s2.xlarge.4	4	16
s2.2xlarge.4	8	32
s2.4xlarge.4	16	64
s2.8xlarge.4	32	128
s2.medium.8	1	8
s2.large.8	2	16
s2.xlarge.8	4	32
s2.2xlarge.8	8	64
s2.4xlarge.8	16	128
s2.8xlarge.8	32	256

Table 8 ECS flavors allowed on s3 DeHs

ECS Flavor	vCPUs	Memory (RAM in GB)
s3.medium.1	1	1
s3.large.1	2	2
s3.xlarge.1	4	4
s3.2xlarge.1	8	8
s3.4xlarge.1	16	16
s3.8xlarge.1	32	32
s3.medium.2	1	2
s3.large.2	2	4
s3.xlarge.2	4	8
s3.2xlarge.2	8	16
s3.4xlarge.2	16	32
s3.8xlarge.2	32	64
s3.medium.4	1	4
s3.large.4	2	8
s3.xlarge.4	4	16
s3.2xlarge.4	8	32
s3.4xlarge.4	16	64
s3.8xlarge.4	32	128
s3.medium.8	1	8
s3.large.8	2	16
s3.xlarge.8	4	32
s3.2xlarge.8	8	64
s3.4xlarge.8	16	128
s3.8xlarge.8	32	256

Parent topic: Categories and Types