Help Center/ Elastic Cloud Server/ Service Overview/ ECS Types and Specifications/ x86 ECS Specifications/ Memory-optimized ECSs
Updated on 2025-09-05 GMT+08:00
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Memory-optimized ECSs

Overview

Memory-optimized ECSs have a large memory size and provide high memory performance. They are designed for memory-intensive applications that process a large amount of data, such as precision marketing, e-commerce, and IoV big data analysis.

Hyper-threading is enabled for this type of ECS by default. Each vCPU is a thread of a CPU core.

Available now: M9, aM8, M7, aM7, M7n, M6, M3ne, M3, and M2

Table 1 Memory-optimized ECS features

Series

Compute

Disk Type

Network

M9
  • High I/O
  • General Purpose SSD
  • Ultra-high I/O
  • Extreme SSD
  • General Purpose SSD V2
  • Support for IPv6
  • Ultra-high PPS throughput
  • An ECS with higher specifications has better network performance.
  • Maximum PPS: 40,000,000
  • Maximum intranet bandwidth: 120 Gbit/s
  • Maximum number of network connections: 10,000,000

aM8
  • High I/O
  • General Purpose SSD
  • Ultra-high I/O
  • Extreme SSD
  • General Purpose SSD V2
  • Support for IPv6
  • Ultra-high PPS throughput
  • An ECS with higher specifications has better network performance.
  • Maximum PPS: 20,000,000
  • Maximum intranet bandwidth: 120 Gbit/s
  • Maximum number of network connections: 10,000,000

M7
  • vCPU to memory ratio: 1:8
  • Number of vCPUs: 2 to 128
  • 3rd Generation Intel® Xeon® Scalable Processor
  • Basic/Turbo frequency: 3.0 GHz/3.5 GHz
  • Hyper-threading (Enabling or Disabling Hyper-Threading)
  • High I/O
  • General Purpose SSD
  • Ultra-high I/O
  • Extreme SSD
  • General Purpose SSD V2
  • Support for IPv6
  • Ultra-high PPS throughput
  • An ECS with higher specifications has better network performance.
  • Maximum PPS: 12,000,000
  • Maximum intranet bandwidth: 42 Gbit/s
  • Maximum number of network connections: 10,000,000

aM7
  • High I/O
  • General Purpose SSD
  • Ultra-high I/O
  • Extreme SSD
  • General Purpose SSD V2
  • Support for IPv6
  • Ultra-high PPS throughput
  • An ECS with higher specifications has better network performance.
  • Maximum PPS: 20,000,000
  • Maximum intranet bandwidth: 100 Gbit/s
  • Maximum number of network connections: 20,000,000

M7n
  • vCPU to memory ratio: 1:8
  • Number of vCPUs: 2 to 96
  • 3rd Generation Intel® Xeon® Scalable Processor
  • Basic/Turbo frequency: 2.6 GHz/3.4 GHz
  • Hyper-threading (Enabling or Disabling Hyper-Threading)
  • High I/O
  • General Purpose SSD
  • Ultra-high I/O
  • Extreme SSD
  • General Purpose SSD V2
  • Support for IPv6
  • Ultra-high PPS throughput
  • An ECS with higher specifications has better network performance.
  • Maximum PPS: 8,500,000
  • Maximum intranet bandwidth: 40 Gbit/s
  • Maximum number of network connections: 8,000,000

M6
  • vCPU to memory ratio: 1:8
  • Number of vCPUs: 2 to 64
  • 2nd Generation Intel® Xeon® Scalable Processor
  • Basic/Turbo frequency: 3.0 GHz/3.4 GHz
  • High I/O
  • General Purpose SSD
  • Ultra-high I/O
  • Extreme SSD
  • General Purpose SSD V2
  • Ultra-high PPS throughput
  • An ECS with higher specifications has better network performance.
  • Maximum PPS: 10,000,000
  • Maximum intranet bandwidth: 40 Gbit/s
  • Maximum number of network connections: 10,000,000

M3ne
  • vCPU to memory ratio: 1:8
  • Number of vCPUs: 2 to 60
  • Intel® Xeon® Scalable Processor
  • Basic/Turbo frequency: 3.0 GHz/3.4 GHz
  • High I/O
  • General Purpose SSD
  • Ultra-high I/O
  • Extreme SSD
  • General Purpose SSD V2
  • Ultra-high PPS throughput
  • An ECS with higher specifications has better network performance.
  • Maximum PPS: 10,000,000
  • Maximum intranet bandwidth: 40 Gbit/s

M3
  • vCPU to memory ratio: 1:8
  • Number of vCPUs: 2 to 60
  • Intel® Xeon® Scalable Processor
  • Basic/Turbo frequency: 3.0 GHz/3.4 GHz
  • High I/O
  • General Purpose SSD
  • Ultra-high I/O
  • Extreme SSD
  • General Purpose SSD V2
  • Ultra-high PPS throughput
  • An ECS with higher specifications has better network performance.
  • Maximum PPS: 5,000,000
  • Maximum intranet bandwidth: 17 Gbit/s

M2
  • vCPU to memory ratio: 1:8
  • Number of vCPUs: 2 to 32
  • Intel® Xeon® Processor E5 v4 family
  • Basic/Turbo frequency: 2.4 GHz/3.3 GHz
  • High I/O
  • General Purpose SSD
  • Ultra-high I/O
  • Extreme SSD
  • Ultra-high PPS throughput
  • An ECS with higher specifications has better network performance.
  • Maximum PPS: 600,000
  • Maximum intranet bandwidth: 13 Gbit/s

Memory-optimized M9

Overview

M9 ECSs use the Intel ® Xeon ® Scalable processors and the latest Huawei Cloud QingTian architecture to provide enhanced compute, network, and security performance to fulfill the high-performance and large-memory requirements.

Notes

Scenarios

  • Massively parallel processing (MPP) of data warehouse
  • MapReduce and Hadoop distributed computing
  • Distributed file systems
  • Network file system, log, or data processing applications

Specifications

Table 2 M9 ECS specifications

Flavor

vCPUs

Memory

(GiB)

Max./Assured Network Bandwidth

(Gbit/s)

PPS

(10,000)

Network Connections

(10,000)

Max. NIC Queues

Max. NICs

Max. Supplementary NICs

Max. EVS Disk Bandwidth (Gbit/s)

(Gbit/s)

Max. EVS Disk IOPS (10,000)

Virtualization

m9.large.8

2

16

20/3

100

75

2

2

16

11

11

QingTian

m9.xlarge.8

4

32

20/5

160

200

4

3

32

11

11

m9.2xlarge.8

8

64

20/8

200

300

8

8

64

11

11

m9.4xlarge.8

16

128

30/12

350

400

16

8

128

11

11

m9.8xlarge.8

32

256

40/25

700

600

32

8

256

11

11

m9.16xlarge.8

64

512

60/40

1,000

700

64

8

256

21

23

m9.32xlarge.8

128

1024

100/80

2,000

1,000

64

10

256

43

46

m9.48xlarge.8

192

1504

120/102

4,000

1,000

64

12

256

64

70

Memory-optimized aM8

Overview

aM8 ECSs use the next-generation scalable processors with up to 3.7 GHz turbo frequency and 4,800 MHz DDR5 memory. With the next-generation QingTian architecture, aM8 ECSs provide more robust and stable computing and network performance as well as all-scenario security and trustworthiness capabilities.

Notes

When you select a Windows Server image for an aM8 ECS with 192 vCPUs, the OS version must be one of the following:

  • Windows Server 2019 (October 2022, OS build:17763.3532 or later)
  • Windows Server 2022 (July 2022, OS build: 20348.859 or later)

Scenarios

  • Massively parallel processing (MPP) of data warehouse
  • MapReduce and Hadoop distributed computing
  • Distributed file systems
  • Network file system, log, or data processing applications

Specifications

Table 3 aM8 ECS specifications

Flavor

vCPUs

Memory

(GiB)

Max./Assured Network Bandwidth

(Gbit/s)

PPS

(10,000)

Network Connections

(10,000)

Max. NIC Queues

Max. NICs

Max. Supplementary NICs

Max./Assured EVS Disk Bandwidth (Gbit/s)

Max. EVS Disk IOPS (10,000)

Virtualization

am8.large.8

2

16

20/2

90

75

2

3

8

6/0.3

5

QingTian

am8.xlarge.8

4

32

20/3

100

150

4

3

16

6/0.5

5

am8.2xlarge.8

8

64

20/5

160

200

8

4

32

6/1.1

5

am8.4xlarge.8

16

128

30/8

200

300

16

4

64

6/2.1

5

am8.8xlarge.8

32

256

40/12

350

400

32

4

128

6/4.3

5

am8.12xlarge.8

48

384

50/18

500

500

48

4

256

8/6.4

7

am8.16xlarge.8

64

512

60/25

700

600

64

4

256

11/8.5

10

am8.24xlarge.8

96

768

80/35

1,000

700

64

8

256

16/13

13

am8.32xlarge.8

128

1024

100/45

1,400

800

64

10

256

21/17

17

am8.48xlarge.8

192

1536

120/65

2,000

1,000

64

12

256

32/26

25

Memory-optimized M7

Overview

M7 ECSs use the third-generation Intel® Xeon® Scalable processors to provide enhanced computing, security, and stability. Each M7 ECS can have a maximum number of 128 vCPUs and a memory speed of 3,200 MHz. They are suitable for memory-intensive computing applications.

Notes

M7 ECSs can only have SCSI disks attached, and the disks will use WWN identifiers.

M7 ECSs are only sold in Chinese mainland regions.

Scenarios

  • Massively parallel processing (MPP) of data warehouse
  • MapReduce and Hadoop distributed computing
  • Distributed file systems
  • Network file system, log, or data processing applications

Specifications

Table 4 M7 ECS specifications

Flavor

vCPUs

Memory

(GiB)

Max./Assured Network Bandwidth

(Gbit/s)

PPS

(10,000)

Network Connections

(10,000)

Max. NIC Queues

Max. NICs

Max./Assured EVS Disk Bandwidth

(Gbit/s)

Max. EVS Disk IOPS (10,000)

Virtualization

m7.large.8

2

16

4/0.8

40

50

2

2

6/1

16

QingTian

m7.xlarge.8

4

32

8/1.6

80

50

2

3

6/1.5

16

m7.2xlarge.8

8

64

15/3

150

100

4

4

6/2

16

m7.3xlarge.8

12

96

17/5

200

150

4

6

6/3

16

m7.4xlarge.8

16

128

20/6

280

150

8

8

6/4

16

m7.6xlarge.8

24

192

25/9

400

200

8

8

6/5

16

m7.8xlarge.8

32

256

30/12

550

300

16

8

None/6

16

m7.12xlarge.8

48

384

35/18

750

400

16

8

None/8

16

m7.16xlarge.8

64

512

36/24

1,000

500

28

8

None/12

16

m7.24xlarge.8

96

768

40/36

1,100

800

32

8

None/16

22.5

m7.32xlarge.8

128

1024

42/40

1,200

1,000

32

8

None/24

30

Memory-optimized aM7

Overview

aM7 ECSs use scalable processors to provide enhanced computing, security, and stability. An aM7 ECS can have a maximum number of 232 vCPUs and a memory speed of 3,200 MHz. They are suitable for memory-intensive computing applications.

Notes

aM7 ECSs offer an intranet bandwidth of up to 100 Gbit/s and network forwarding capacity of up to 20 million PPS. When the bandwidth is higher than 50 Gbit/s and the network forwarding packets exceed 10 million PPS, you can use DPDK to mask the differences among ECS kernel protocol stacks to get the actual network performance.

Scenarios

  • Massively parallel processing (MPP) of data warehouse
  • MapReduce and Hadoop distributed computing
  • Distributed file systems
  • Network file system, log, or data processing applications

Specifications

Table 5 aM7 ECS specifications

Flavor

vCPUs

Memory

(GiB)

Max./Assured Network Bandwidth

(Gbit/s)

PPS

(10,000)

Network Connections

(10,000)

Max. NIC Queues

Max. NICs

Max. Supplementary NICs

Max./Assured EVS Disk Bandwidth (Gbit/s)

Max. EVS Disk IOPS (10,000)

Virtualization

am7.large.8

2

16

2/1

40

75

2

2

16

5/0.2

1

KVM

am7.xlarge.8

4

32

3/1.5

60

150

2

3

32

5/0.5

1.5

am7.2xlarge.8

8

64

4/2.5

100

200

4

4

64

5/1.0

2

am7.4xlarge.8

16

128

8/5

200

300

8

8

128

5/2.0

3

am7.8xlarge.8

32

256

15/8

300

400

16

8

256

5/4

5

am7.12xlarge.8

48

384

22/12

400

500

16

8

256

7.5/6

7

am7.16xlarge.8

64

512

28/16

550

800

24

12

256

10/8

10

am7.24xlarge.8

96

768

40/25

800

1,000

24

12

256

15/12

13

am7.29xlarge.8

116

934

50/30

950

1,200

32

16

256

18/14

14

am7.32xlarge.8

128

1024

55/35

1,000

1,300

32

16

256

20/16

17

am7.48xlarge.8

192

1536

100/80

1,600

1,800

32

16

256

30/24

25

am7.58xlarge.8

232

1868

120/100

2,000

2,000

32

16

256

None/36

30

Memory-optimized M7n

M7n ECSs use the third-generation Intel® Xeon® Scalable processors to provide enhanced computing, security, and stability. Each M7n ECS can have a maximum number of 96 vCPUs and a memory speed of 3,200 MHz, and provide a secure and trusted cloud environment for memory-intensive computing applications.

Scenarios

  • Massively parallel processing (MPP) of data warehouse
  • MapReduce and Hadoop distributed computing
  • Distributed file systems
  • Network file system, log, or data processing applications

Specifications

Table 6 M7n ECS specifications

Flavor

vCPUs

Memory

(GiB)

Max./Assured Network Bandwidth

(Gbit/s)

PPS

(10,000)

Network Connections

(10,000)

Max. NIC Queues

Max. NICs

Max./Assured EVS Disk Bandwidth

(Gbit/s)

Max. EVS Disk IOPS (10,000)

Virtualization

m7n.large.8

2

16

4/0.8

40

50

2

2

6/1.5

16

KVM

m7n.xlarge.8

4

32

8/1.6

80

50

2

3

6/2

16

KVM

m7n.2xlarge.8

8

64

15/3

150

100

4

4

6/3

16

KVM

m7n.3xlarge.8

12

96

17/5

200

150

4

6

6/4

16

KVM

m7n.4xlarge.8

16

128

20/6

280

150

8

8

6/5

16

KVM

m7n.6xlarge.8

24

192

25/9

400

200

8

8

None/6

16

KVM

m7n.8xlarge.8

32

256

30/12

550

300

16

8

None/8

16

KVM

m7n.12xlarge.8

48

384

35/18

750

400

16

8

None/12

16

KVM

m7n.16xlarge.8

64

512

36/24

800

500

28

8

None/16

16

KVM

m7n.24xlarge.8

96

768

40/36

850

800

32

8

None/24

22.5

KVM

Memory-optimized M6

Overview

M6 ECSs use the second-generation Intel® Xeon® Scalable processors with technologies optimized to offer powerful and stable computing performance. Using 25GE high-speed intelligent NICs, M6 ECSs provide a maximum memory size of 512 GiB based on DDR4 for memory-intensive applications with high requirements on network bandwidth and PPS.

Scenarios

  • Massively parallel processing (MPP) of data warehouse
  • MapReduce and Hadoop distributed computing
  • Distributed file systems
  • Network file system, log, or data processing applications

Specifications

Table 7 M6 ECS specifications

Flavor

vCPUs

Memory

(GiB)

Max./Assured Network Bandwidth

(Gbit/s)

PPS

(10,000)

Network Connections

(10,000)

Max. NIC Queues

Max. NICs

Max./Assured EVS Disk Bandwidth

(Gbit/s)

Max. EVS Disk IOPS (10,000)

Virtualization

m6.large.8

2

16

4/1.2

40

50

2

2

5/1

1

KVM

m6.xlarge.8

4

32

8/2.4

80

50

2

3

5/1.5

2

KVM

m6.2xlarge.8

8

64

15/4.5

150

100

4

4

5/2

2.5

KVM

m6.3xlarge.8

12

96

17/7

200

150

4

6

5/2.5

3

KVM

m6.4xlarge.8

16

128

20/9

280

150

8

8

5/3.5

4

KVM

m6.6xlarge.8

24

192

25/14

400

200

8

8

5/4

5

KVM

m6.8xlarge.8

32

256

30/18

550

300

16

8

10/7

6

KVM

m6.12xlarge.8

48

384

35/27

750

400

16

8

15/10

10

KVM

m6.16xlarge.8

64

512

40/36

1,000

500

32

8

None/20

15

KVM

m6.22xlarge.8.physical

88

768

40/40

1,000

1,000

16

33

None/20

20

Bare metal

Memory-optimized M3ne

Overview

M3ne ECSs are suited for large-memory datasets with high network performance requirements. Using Intel® Xeon® Scalable processors and Hi1822 high-speed intelligent NICs, the M3ne ECSs provide a maximum memory size of 512 GiB based on DDR4 for memory-intensive applications with high requirements on network performance.

Scenarios

  • High-performance databases
  • In-memory databases
  • Distributed memory cache
  • Data analysis and mining
  • Hadoop and Spark clusters and other enterprise applications

Specifications

Table 8 M3ne ECS specifications

Flavor

vCPUs

Memory

(GiB)

Max./Assured Network Bandwidth

(Gbit/s)

PPS

(10,000)

Max. NIC Queues

Max. NICs

Virtualization

m3ne.large.8

2

16

4/1.3

40

2

2

KVM

m3ne.xlarge.8

4

32

8/2.5

80

2

3

KVM

m3ne.2xlarge.8

8

64

15/5

150

4

4

KVM

m3ne.3xlarge.8

12

96

17/8

200

4

6

KVM

m3ne.4xlarge.8

16

128

20/10

280

8

8

KVM

m3ne.6xlarge.8

24

192

25/16

400

8

8

KVM

m3ne.8xlarge.8

32

256

30/20

550

16

8

KVM

m3ne.15xlarge.8

60

512

40/40

1,000

32

8

KVM

Memory-optimized M3

Overview

M3 ECSs are developed based on the KVM virtualization platform and designed for processing large-scale data sets in the memory. They use Intel® Xeon® Scalable processors, network acceleration engines, and DPDK rapid packet processing mechanism to provide higher network performance, providing a maximum memory size of 512 GiB based on DDR4 for high-memory computing applications.

Notes

M3 ECSs do not have InfiniBand or SSDs configured.

Scenarios

  • High-performance databases
  • In-memory databases
  • Distributed memory cache
  • Data analysis and mining
  • Hadoop and Spark clusters and other enterprise applications

Specifications

Table 9 M3 ECS specifications

Flavor

vCPUs

Memory

(GiB)

Max./Assured Network Bandwidth

(Gbit/s)

Basic EVS Disk Bandwidth

(Gbit/s)

PPS

(10,000)

Max. NIC Queues

Basic EVS Disk Bandwidth

(Gbit/s)

Virtualization

m3.large.8

2

16

1.5/0.6

1

30

2

1

KVM

m3.xlarge.8

4

32

3/1.1

1.5

50

2

1.5

KVM

m3.2xlarge.8

8

64

5/2

2

90

4

2

KVM

m3.3xlarge.8

12

96

8/3.5

2.5

110

4

2.5

KVM

m3.4xlarge.8

16

128

10/4.5

3

130

4

3

KVM

m3.6xlarge.8

24

192

12/6.5

3.5

200

8

3.5

KVM

m3.8xlarge.8

32

256

15/9

4

260

8

4

KVM

m3.15xlarge.8

60

512

17/17

8

500

16

8

KVM

Memory-optimized M2

Overview

M2 ECSs use Intel Xeon E5-2690 v4 CPUs and are designed for memory-optimized applications.

Notes

To improve network performance, you can set the NIC MTU of an M2 ECS to 8888.

Scenarios

  • High-performance databases
  • In-memory databases
  • Distributed memory cache
  • Data analysis and mining
  • Hadoop and Spark clusters and other enterprise applications

Specifications

Table 10 M2 ECS specifications

Flavor

vCPUs

Memory

(GiB)

Max./Assured Network Bandwidth

(Gbit/s)

PPS

(10,000)

Max. NIC Queues

Virtualization

m2.large.8

2

16

1.5/0.5

10

1

KVM

m2.xlarge.8

4

32

3/1

15

1

KVM

m2.2xlarge.8

8

64

5/2

30

2

KVM

m2.4xlarge.8

16

128

8/4

40

4

KVM

m2.8xlarge.8

32

256

13/8

60

8

KVM
Parent Topic: x86 ECS Specifications