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TencentDB for MongoDB

Architecture Specifications

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마지막 업데이트 시간: 2026-04-17 15:01:44
The specification selection for replica set instances primarily targets mongod nodes. When purchasing an instance, its compute and storage capabilities are determined by the selected mongod node specification.

Local Disk General I mongod Node Specification

Specification
CPU Core
Memory (GB)
Disk Capacity (GB)
Maximum Connections for 3-Node Instances
Maximum Connections per Node
(The actual upper limit does not exceed the maximum connections of the instance.)
2 cores and 4 GB
2
4
Default value: 250 GB; value range: [100, 500]
3000
10,000
4 cores and 8 GB
4
8
Default value: 500 GB; value range: [150, 1000]
6000
4 cores and 16 GB
16
Default value: 750 GB; value range: [250, 1500]
9000
4 cores and 32 GB
32
Default value: 1500 GB; value range: [500, 4000]
12000
15,000
8 cores and 16 GB
8
16
Default value: 750 GB; value range: [250, 1500]
9000
10,000
8 cores and 32 GB
32
Default value: 1500 GB; value range: [500, 4000]
12000
15,000
8 cores and 64 GB
64
Default value: 2500 GB; value range: [800, 5000]
18000
16 cores and 32 GB
16
32
Default value: 1500 GB; value range: [500, 4000]
12000
16 cores and 64 GB
64
Default value: 2500 GB; value range: [800, 5000]
18000
16 cores and 128 GB
128
Default value: 3000 GB; value range: [1500, 5000]
21000
24 cores and 128 GB
24
128
Default value: 3000 GB; value range: [1500, 5000]
21000
32 cores and 128 GB
32
128
Default value: 3000 GB; value range: [1500, 5000]
21000
32 cores and 256 GB
256
Default value: 4000 GB; value range: [1500, 6000]
42000
20,000
48 cores and 512 GB
48
512
60000
64 cores and 256 GB
64
256
42000
64 cores and 512 GB
512
60000

Cloud Disk General I mongod Node Specifications

Specification
CPU Core
Memory (GB)
Disk Capacity (GB)
Maximum Connections for 3-Node Instances
Maximum Connections per Node
(The actual upper limit does not exceed the maximum connections of the instance.)
2 cores and 4 GB
2
4
Default value: 250 GB; value range: [100, 500]
3000
10,000
4 cores and 8 GB
4
8
Default value: 500 GB; value range: [150, 1000]
6000
4 cores and 16 GB
16
Default value: 750 GB; value range: [250, 1500]
9000
4 cores and 32 GB
32
Default value: 1500 GB; value range: [500, 4000]
12000
15,000
8 cores and 16 GB
8
16
Default value: 750 GB; value range: [250, 1500]
9000
10,000
8 cores and 32 GB
32
Default value: 1500 GB; value range: [500, 4000]
12000
15,000
8 cores 64 GB
64
Default value: 2500 GB; value range: [800, 5000]
18000
16 cores and 32 GB
16
32
Default value: 1500 GB; value range: [500, 4000]
12000
16 cores and 64 GB
64
Default value: 2500 GB; value range: [800, 5000]
18000
16 cores and 128 GB
128
Default value: 3000 GB; value range: [1500, 5000]
21000
24 cores and 128 GB
24
128
Default value: 3000 GB; value range: [1500, 5000]
21000

Sharded Cluster mongos Specifications

A single-AZ deployment instance supports 3 to 32 nodes.
A multi-AZ deployment instance supports 6 to 32 mongos nodes.
Mongos Specification
Number of Connections per Mongos Node
1 core and 2 GB
1000
2 cores and 4 GB
2000
4 cores and 8 GB
4000
8 cores and 16 GB
8000
16 cores and 32 GB
16000

Sharded Cluster Shard Quantity

Shard quantity: Ranges from 2 to 36. A larger number of shards increases the overall data capacity and throughput of the instance.
Number of nodes per shard: Each shard consists of multiple storage nodes. The following configurations are supported:
Primary/Secondary nodes: The default configuration includes 3 storage nodes (1 primary and 2 secondary). Configurations of 5 nodes (1 primary and 4 secondary) and 7 nodes (1 primary and 6 secondary) are also available. Custom replica count is not currently supported..
Read-only nodes: You can configure 0 to 5 secondary nodes as read-only nodes.

Local Disk Ten-Gigabit High IO Mongod Node Specifications (Discontinued)

Note:
The maximum number of connections for a 3-node replica set instance indicates the standard connection limit for each specification. For single-node instances, the per-node connection limit can be increased up to the maximum allowable threshold.
CPU Core per Node
Memory per Node (GB)
Disk Capacity per Node (GB)
Maximum Number of Connections for the 3-Node Instance
Maximum Number of Connections per Node
(The actual maximum number cannot exceed the maximum number of connections of the instance.)
2 cores
4 GB
Default value: 250 GB; value range: [100, 500]
3000
10,000

4 cores
8 GB
Default value: 500 GB; value range: [150, 1000]
6000
6 cores
16 GB
Default value: 750 GB; value range: [250, 1500]
9000
12 cores
32 GB
Default value: 1500 GB; value range: [500, 4000]
12000
15,000
24 cores
64 GB
Default value: 2500 GB; value range: [800, 5000]
18000
24 cores
128 GB
Default value: 3000 GB; value range: [1500, 5000]
21000
32 cores
240 GB
Default value: 4000 GB; value range: [1500, 6000]
42000
20,000
48 cores
512 GB
Default value: 4000 GB; value range: [1500, 6000]
60000

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