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ApsaraDB for MongoDB:Replica set instance specifications

Last Updated:Mar 28, 2026

ApsaraDB for MongoDB replica set instances are available in three storage types: Cloud Disk, Local Disk, and Dedicated Physical Server. Use this page to select the instance type that matches your CPU, memory, connection, IOPS, and storage requirements.

Important

A single collection file cannot exceed 16 TB. Exceeding this limit makes the instance unavailable.

Note

  • The memory listed for each instance type is the total allocated memory, including memory used by MongoDB management services, database services, the operating system, BIOS, kernel, and hypervisor. Available memory is less than the listed amount.

  • Some instance types were upgraded on May 14, 2024. If the maximum connections for your instance do not match the values on this page, restart the instance to apply the updated limits. For details, see Notification: Upgrade to maximum connections for some ApsaraDB for MongoDB instance types.

Cloud Disk version

Supported MongoDB versions: 8.0, 7.0, 6.0, 5.0, and 4.4.

For the maximum IOPS and throughput of each disk type, see ESSD disks and ESSD AutoPL disks.

All Cloud Disk instance types support the following disk types and storage ranges:

Disk typeStorage rangeStep size
PL1 ESSD20 GB to 16,000 GB10 GB
PL2 ESSD470 GB to 16,000 GB10 GB
PL3 ESSD1,270 GB to 16,000 GB10 GB
ESSD AutoPL disk40 GB to 16,000 GB10 GB

In the tables below, S = storage space in GB, and "disk max" = the maximum IOPS or throughput of the selected disk type.

Dedicated disk version

Specifications (per node)Instance type codeMaximum connectionsMaximum IOPSMaximum throughput (MB/s)
2-core 8 GBmdb.shard.4x.large.d5,000min{1800 + 50 × S, 10000, disk max}min{120 + 0.5 × S, 128, disk max}
2-core 16 GBmdb.shard.8x.large.d8,000min{1800 + 50 × S, 10000, disk max}min{120 + 0.5 × S, 128, disk max}
4-core 8 GBmdb.shard.2x.xlarge.d8,000min{1800 + 50 × S, 20000, disk max}min{120 + 0.5 × S, 192, disk max}
4-core 16 GBmdb.shard.4x.xlarge.d8,000min{1800 + 50 × S, 20000, disk max}min{120 + 0.5 × S, 192, disk max}
4-core 32 GBmdb.shard.8x.xlarge.d12,000min{1800 + 50 × S, 20000, disk max}min{120 + 0.5 × S, 192, disk max}
8-core 16 GBmdb.shard.2x.2xlarge.d12,000min{1800 + 50 × S, 25000, disk max}min{120 + 0.5 × S, 256, disk max}
8-core 32 GBmdb.shard.4x.2xlarge.d16,000min{1800 + 50 × S, 25000, disk max}min{120 + 0.5 × S, 256, disk max}
8-core 64 GBmdb.shard.8x.2xlarge.d16,000min{1800 + 50 × S, 25000, disk max}min{120 + 0.5 × S, 256, disk max}
16-core 32 GBmdb.shard.2x.4xlarge.d16,000min{1800 + 50 × S, 40000, disk max}min{120 + 0.5 × S, 384, disk max}
16-core 64 GBmdb.shard.4x.4xlarge.d32,000min{1800 + 50 × S, 40000, disk max}min{120 + 0.5 × S, 384, disk max}
16-core 128 GBmdb.shard.8x.4xlarge.d32,000min{1800 + 50 × S, 40000, disk max}min{120 + 0.5 × S, 384, disk max}
32-core 64 GBmdb.shard.2x.8xlarge.d32,000min{1800 + 50 × S, 60000, disk max}min{120 + 0.5 × S, 640, disk max}
32-core 128 GBmdb.shard.4x.8xlarge.d96,000min{1800 + 50 × S, 60000, disk max}min{120 + 0.5 × S, 640, disk max}
32-core 256 GBmdb.shard.8x.8xlarge.d96,000min{1800 + 50 × S, 60000, disk max}min{120 + 0.5 × S, 640, disk max}
64-core 128 GBmdb.shard.2x.16xlarge.d96,000min{1800 + 50 × S, 300000, disk max}min{120 + 0.5 × S, 2048, disk max}
64-core 256 GBmdb.shard.4x.16xlarge.d128,000min{1800 + 50 × S, 300000, disk max}min{120 + 0.5 × S, 2048, disk max}
64-core 512 GBmdb.shard.8x.16xlarge.d128,000min{1800 + 50 × S, 300000, disk max}min{120 + 0.5 × S, 2048, disk max}
The 64-core 128 GB, 64-core 256 GB, and 64-core 512 GB instance types are available only in Zones A, B, and C of the Singapore region.

General-purpose disk version

Specifications (per node)Instance type codeMaximum connectionsMaximum IOPSMaximum throughput (MB/s)
2-core 4 GBmdb.shard.2x.large.c3,000min{1800 + 50 × S, 10500, disk max}min{120 + 0.5 × S, 128, disk max}
2-core 8 GBmdb.shard.4x.large.c3,000min{1800 + 50 × S, 10500, disk max}min{120 + 0.5 × S, 128, disk max}
4-core 8 GBmdb.shard.2x.xlarge.c6,000min{1800 + 50 × S, 21000, disk max}min{120 + 0.5 × S, 192, disk max}
4-core 16 GBmdb.shard.4x.xlarge.c6,000min{1800 + 50 × S, 21000, disk max}min{120 + 0.5 × S, 192, disk max}
8-core 16 GBmdb.shard.2x.2xlarge.c12,000min{1800 + 50 × S, 26250, disk max}min{120 + 0.5 × S, 256, disk max}
8-core 32 GBmdb.shard.4x.2xlarge.c16,000min{1800 + 50 × S, 26250, disk max}min{120 + 0.5 × S, 256, disk max}
16-core 32 GBmdb.shard.2x.4xlarge.c16,000min{1800 + 50 × S, 42000, disk max}min{120 + 0.5 × S, 384, disk max}
16-core 64 GBmdb.shard.4x.4xlarge.c32,000min{1800 + 50 × S, 42000, disk max}min{120 + 0.5 × S, 384, disk max}
32-core 64 GBmdb.shard.2x.8xlarge.c32,000min{1800 + 50 × S, 50000, disk max}min{120 + 0.5 × S, 640, disk max}

Availability

General-purpose disk version is available in the following regions and zones:

RegionZones
China (Hangzhou)Zone J
China (Shanghai)Zones B, L, and N
China (Beijing)Zones H and K
China (Shenzhen)Zone D
China (Hong Kong)Zones B and C
SingaporeZone A
US (Silicon Valley)Zones A and B
US (Virginia)Zones A and B

Constraints

  • General-purpose disk version does not support disk encryption.

  • General-purpose disk version is not available in all regions. If the instance types are not visible in the console for your target region, submit a ticket to request access.

  • For multi-zone deployments, confirm that the destination region supports the selected instance type before creating the instance.

Local disk version

Supported MongoDB versions: 4.2 and 4.0. MongoDB 3.4 has been discontinued.

General-purpose local disk version

Storage space: 10 GB to 2,000 GB, in increments of 10 GB.

Specifications (per node)Instance type codeMaximum connectionsMaximum IOPS
1-core 2 GBdds.mongo.mid1,0008,000
2-core 4 GBdds.mongo.standard3,0008,000
4-core 8 GBdds.mongo.large6,0008,000
8-core 16 GBdds.mongo.xlarge9,0008,000
8-core 32 GBdds.mongo.2xlarge16,00014,000
16-core 64 GBdds.mongo.4xlarge32,00016,000

Dedicated local disk version

Storage space: 10 GB to 3,000 GB, in increments of 10 GB.

Specifications (per node)Instance type codeMaximum connectionsMaximum IOPS
2-core 16 GBmongo.x8.medium8,0008,000
4-core 32 GBmongo.x8.large8,0009,000
8-core 64 GBmongo.x8.xlarge16,00018,000
16-core 128 GBmongo.x8.2xlarge32,00036,000
32-core 256 GBmongo.x8.4xlarge64,00072,000

Dedicated physical server

Storage space: 2,000 GB to 6,000 GB, in increments of 10 GB.

Specifications (per node)Instance type codeMaximum connectionsMaximum IOPS
60-core 440 GBdds.mongo.2xmonopolize100,000100,000
90-core 660 GBdds.mongo.3xmonopolize100,000100,000