Help Center/Dedicated Computing Cluster/Service Overview/Categories and Types/Memory-optimized DCCs
Updated on 2025-05-20 GMT+08:00
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Memory-optimized DCCs

Overview

Memory-optimized DCCs are designed for processing large-scale data sets in the memory. They use the latest Intel Xeon Skylake CPUs, network acceleration engines, and Data Plane Development Kit (DPDK) to provide higher network performance, providing a maximum of 512 GB DDR4 memory for high-memory computing applications.

Memory-optimized DCCs are classified into m3, m7, and m6 types. M3, M7, and M6 ECSs can be deployed on memory-optimized DCCs.

DCC Specifications

Table 1 Specifications of m3 DCCs

DCC Type

Number of CPUs (Sockets)

Number of Physical Cores

Hardware Specifications

vCPUs

m3

2

18

  • CPU: Intel® Xeon® Skylake 6151 v5 (frequency: 3.00 GHz; Turbo frequency: 3.40 GHz)
  • Memory: 512 GB (or 524,288 MB)

64

Table 2 Specifications of m6 DCCs

DCC Type

Number of CPUs (Sockets)

Number of Physical Cores

Hardware Specifications

vCPUs

m6

2

22

  • CPU: Intel Cascade Lake 6266 (frequency: 3.00 GHz; Turbo frequency: 3.40 GHz)
  • Memory: 608 GB (or 622,592 MB)

76

Table 3 Specifications of m7 DCCs

DCC Type

Number of CPUs (Sockets)

Number of Physical Cores

Hardware Specifications

vCPUs

m7

2

32

CPU: Intel® Xeon® IceLake CPU (frequency: 3.0 GHz; Turbo frequency: 3.5 GHz)

Memory: 1,024 GB (or 1,048,576 MB)

128

The number of vCPUs for a DCC is calculated as follows: Number of vCPUs =(Number of sockets x Number of cores x Number of single-core threads – CPU overheads) x CPU overcommitment ratio

  • m3 DCCs

    vCPUs =(2 x 18 x 2 – 12) x 1.07 =64

  • m6 DCCs

    vCPUs =(2 x 22 x 2 – 12) x 1 =76

  • m7 DCCs

    vCPUs =(2 x 32 x 2 – 0) x 1 =128

ECSs Allowed on DCCs

Table 4 ECS flavors allowed on m3 DCCs

ECS Flavor

vCPUs

Memory (GiB)

m3.large.8

2

16

m3.xlarge.8

4

32

m3.2xlarge.8

8

64

m3.3xlarge.8

12

96

m3.4xlarge.8

16

128

m3.6xlarge.8

24

192

m3.8xlarge.8

32

256

m3.15xlarge.8

60

512

m3.16xlarge.8

64

512

Table 5 ECS flavors allowed on m6 DCCs

ECS Flavor

vCPUs

Memory (GiB)

m6.large.8

2

16

m6.xlarge.8

4

32

m6.2xlarge.8

8

64

m6.3xlarge.8

12

96

m6.4xlarge.8

16

128

m6.6xlarge.8

24

192

m6.8xlarge.8

32

256

m6.16xlarge.8

64

512

Table 6 ECS flavors allowed on m7 DCCs

ECS Flavor

vCPUs

Memory (GiB)

m7.large.8

2

16

m7.xlarge.8

4

32

m7.2xlarge.8

8

64

m7.3xlarge.8

12

96

m7.4xlarge.8

16

128

m7.6xlarge.8

24

192

m7.8xlarge.8

32

256

m7.12xlarge.8

48

384

m7.16xlarge.8

64

512

m7.24xlarge.8

96

768

m7.32xlarge.8

128

1024