Quotas and limits in Managed Service for MongoDB
Managed Service for MongoDB has the following limits:
- Quotas are organizational restrictions that can be changed by technical support.
- Limits are technical limitations due to Yandex Cloud architectural features. You cannot change the limits.
If you need more resources, you can increase quotas in one of the following ways:
- Generate a request for a quota increase. You must have the
quota-manager.requestOperatorrole or higher, such aseditororadmin. - Contact technical support and tell us which quotas you want increased and by how much.
Quotas
| Type of limit | Value |
|---|---|
| Number of clusters per cloud | 16 |
| Total number of processor cores for all database hosts per cloud | 96 |
| Total virtual memory for all database hosts per cloud | 640 GB |
| Total storage capacity for all clusters per cloud | 4096 GB |
Limits
| Type of limit | Minimum value | Maximum value |
|---|---|---|
| Host class | b1.medium (2 × 50% vCPU Intel Broadwell, 4 GB RAM) | m3-c80-m640 (80 vCPU Intel Ice Lake, 640 GB RAM) |
| Number of shards per cluster | 1 | 10 |
| Number of hosts per shard when using network HDD or network SSD storage | 1 | 7 |
| Number of hosts per shard when using non-replicated or local SSD storage* | 3 | 7 |
| Number of hosts per cluster | 1 or 3 hosts depending on the disk type; the cluster is created in an unsharded state. | 70 (10 shards, 7 hosts) |
| Amount of data per host when using network HDD or SSD storage | 10 GB | 2048 GB |
| Amount of data per host when using non-replicated SSD storage | 93 GB | 2232 GB |
| Amount of data per host when using local SSD storage (for Intel Broadwell and Intel Cascade Lake)* | 100 GB | 1500 GB |
| Amount of data per host when using local SSD storage (for Intel Ice Lake)* | 368 GB | 2944 GB |
| Number of databases per cluster | 1 | 1000 |
* Read more on how platform selection affects available storage types.
The maximum available number of simultaneous connections to a single Managed Service for MongoDB cluster host depends on the amount of RAM on the host:
| Amount of RAM | Maximum number of connections |
|---|---|
| 2 GB | 2048 |
| 4 GB | 4096 |
| 8 GB | 8192 |
| 16 GB or higher | 16 384 |