Help Center/ Document Database Service/ Service Overview/ Instances/ Instance Specifications/ Single Node
Updated on 2023-08-29 GMT+08:00
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Single Node

Huawei Cloud has discontinued the sale of DDS single node instances since July 15, 2023.

Instances of the same type have different memory specifications. You can select instances of different specifications based on application scenarios.

This section describes single node instance specifications. The instance specifications depend on the selected CPU model.

The default maximum number of connections has been adjusted. Query the number of connections based on the instance creation time. For details about the number of connections for instances created before July 2021, see Historical Instance Specifications.

Instance Specifications

DDS single node instances have two specification types: general-purpose and enhanced II. For details, see Table 1.

Table 1 Specification type

Specification Type

Description

Applicable Scenario

General-purpose

CPU resources are shared with other general-purpose DB instances on the same physical machine. CPU usage is maximized through resource overcommitment. This instance class is a cost-effective option and suitable for scenarios where performance stability is not critical.

Suitable for scenarios that have high requirements on cost-effectiveness.

Enhanced II

With a leading network acceleration engine and Data Plane Development Kit (DPDK) fast packet processing mechanism, this instance class provides higher network performance and computing power.

Suitable for websites and web applications that require high database computing and network performance.
Table 2 Single Node

CPU Type

Specifications

vCPUs

Memory (GB)

Flavor ID

Default Maximum Number of Connections

Range of Connections

x86

General-purpose

1

4

dds.mongodb.s6.medium.4.single

500

200-500

2

4

dds.mongodb.s6.large.2.single

1000

200-1000

2

8

dds.mongodb.s6.large.4.single

1000

200-1000

4

8

dds.mongodb.s6.xlarge.2.single

8000

200-8000

4

16

dds.mongodb.s6.xlarge.4.single

8000

200-8000

8

16

dds.mongodb.s6.2xlarge.2.single

10000

200-10000

8

32

dds.mongodb.s6.2xlarge.4.single

10000

200-10000

Enhanced II

1

8

dds.mongodb.c6.medium.8.single

500

200-500

2

8

dds.mongodb.c6.large.4.single

1000

200-1000

2

16

dds.mongodb.c6.large.8.single

1000

200-1000

4

16

dds.mongodb.c6.xlarge.4.single

8000

200-8000

4

32

dds.mongodb.c6.xlarge.8.single

8000

200-8000

8

32

dds.mongodb.c6.2xlarge.4.single

10000

200-10000

8

64

dds.mongodb.c6.2xlarge.8.single

10000

200-10000

16

64

dds.mongodb.c6.4xlarge.4.single

16000

200-16000

16

128

dds.mongodb.c6.4xlarge.8.single

16000

200-16000

32

128

dds.mongodb.c6.8xlarge.4.single

16000

200-16000

64

256

dds.mongodb.c6.16xlarge.4.single

16000

200-16000

Kunpeng

-

2

4

dds.mongodb.large.arm2.single

1000

200-1000

-

2

8

dds.mongodb.large.arm4.single

1000

200-1000

-

4

8

dds.mongodb.xlarge.arm2.single

8000

200-8000

-

4

16

dds.mongodb.xlarge.arm4.single

8000

200-8000

-

8

16

dds.mongodb.2xlarge.arm2.single

10000

200-10000

-

8

32

dds.mongodb.2xlarge.arm4.single

10000

200-10000

-

16

32

dds.mongodb.4xlarge.arm2.single

16000

200-16000

-

16

64

dds.mongodb.4xlarge.arm4.single

16000

200-16000

Historical Instance Specifications

For details about the range of connections of instances created before July 2021, see the following table.

Table 3 Single Node

CPU Type

Specifications

vCPUs

Memory (GB)

Flavor ID

Default Maximum Number of Connections

Range of Connections

x86

General-purpose

1

4

dds.mongodb.s6.medium.4.single

400

200-500

2

4

dds.mongodb.s6.large.2.single

400

200-1000

2

8

dds.mongodb.s6.large.4.single

400

200-1000

4

8

dds.mongodb.s6.xlarge.2.single

1000

200-8000

4

16

dds.mongodb.s6.xlarge.4.single

1000

200-8000

8

16

dds.mongodb.s6.2xlarge.2.single

4000

200-10000

8

32

dds.mongodb.s6.2xlarge.4.single

4000

200-10000

Enhanced

2

8

dds.mongodb.c3.large.4.single

400

200-1000

4

16

dds.mongodb.c3.xlarge.4.single

1000

200-8000

8

32

dds.mongodb.c3.2xlarge.4.single

4000

200-10000

16

64

dds.mongodb.c3.4xlarge.4.single

8000

200-16000

32

128

dds.mongodb.c3.8xlarge.4.single

8000

200-16000

60

256

dds.mongodb.c3.15xlarge.4.single

8000

200-16000

Enhanced II

2

8

dds.mongodb.c6.large.4.single

400

200-500

4

16

dds.mongodb.c6.xlarge.4.single

1000

200-1000

8

32

dds.mongodb.c6.2xlarge.4.single

4000

200-4000

16

64

dds.mongodb.c6.4xlarge.4.single

8000

200-8000

32

128

dds.mongodb.c6.8xlarge.4.single

8000

200-16000

64

256

dds.mongodb.c6.16xlarge.4.single

8000

200-16000

Kunpeng

-

2

4

dds.mongodb.large.arm2.single

400

200-1000

-

2

8

dds.mongodb.large.arm4.single

400

200-1000

-

4

8

dds.mongodb.xlarge.arm2.single

1000

200-8000

-

4

16

dds.mongodb.xlarge.arm4.single

1000

200-8000

-

8

16

dds.mongodb.2xlarge.arm2.single

4000

200-10000

-

8

32

dds.mongodb.2xlarge.arm4.single

4000

200-10000

-

16

32

dds.mongodb.4xlarge.arm2.single

8000

200-16000

-

16

64

dds.mongodb.4xlarge.arm4.single

8000

200-16000

Helpful Links

  1. How do I change the maximum number of connections of a single node instance?

    You can change the maximum number of connections to an instance by modifying the net.maxIncomingConnections parameter. For details about how to change parameter values, see Editing a Parameter Template.

  2. How do I change the CPU and memory of a single node instance?

    For details, see Changing the CPU or Memory of a Single Node Instance.

  3. How do I scale up the storage of a single node instance?

    For details, see Scaling Up Storage.

Parent topic: Instance Specifications