Dedicated General-Purpose DeHs

Overview

Dedicated general-purpose DeHs are classified as c3 and c4 DeHs. DeHs of c3 and c4 types can be used to deploy C3 and C4 ECSs. The C3 and C4 ECSs use high-performance networks to improve comprehensive performance and stability, meeting the requirements of enterprise-level applications for high service stability and computing performance.

DeH Specifications

Table 1 Specifications of c3 DeHs

Flavor Type	Number of Sockets	Number of Cores per Socket	Hardware Specifications	Number of vCPUs
c3	2	18	CPU: Intel® Xeon® Processor Gold 6151 (24.75M L3 Cache, 3.0 GHz) Memory: 256 GB (or 262,144 MB)	60

Table 2 Specifications of c4 DeHs

Flavor Type	Number of Sockets	Number of Cores per Socket	Hardware Specifications	vCPUs
c4	2	22	CPU: Intel Cascade Lake 6266 (frequency: 3.00 GHz; turbo frequency: 3.40 GHz) Memory: 296 GB (or 303,104 MB)	74

Note

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

• c3 DeHs: vCPUs = (2 x 18 x 2 - 12) x 1 = 60

• c4 DeHs: vCPUs = (2 x 22 x 2 - 14) x 1 = 74

ECSs Allowed on DeHs

Table 3 ECS flavors allowed on c3 DeHs

ECS Flavor	vCPUs	Memory (RAM in GiB)
c3.large.2	2	4
c3.xlarge.2	4	8
c3.2xlarge.2	8	16
c3.4xlarge.2	16	32
c3.8xlarge.2	32	64
c3.15xlarge.2	60	128
c3.large.4	2	8
c3.xlarge.4	4	16
c3.2xlarge.4	8	32
c3.4xlarge.4	16	64
c3.8xlarge.4	32	128
c3.15xlarge.4	60	256

Table 4 ECS flavors allowed on c4 DeHs

Flavor Name	vCPUs	Memory (RAM in GiB)
c4.large.2	2	4
c4.xlarge.2	4	8
c4.2xlarge.2	8	16
c4.3xlarge.2	12	24
c4.4xlarge.2	16	32
c4.6xlarge.2	24	48
c4.8xlarge.2	32	64
c4.16xlarge.2	64	128
c4.large.4	2	8
c4.xlarge.4	4	16
c4.2xlarge.4	8	32
c4.3xlarge.4	12	48
c4.4xlarge.4	16	64
c4.6xlarge.4	24	96
c4.8xlarge.4	32	128
c4.16xlarge.4	64	256

last updated: 2025-06-30 15:41 UTC - commit: 7a03c0de825b3e844534c84081665feb81c26bbb