Quotas and limits in Managed Service for ClickHouse®
Managed Service for ClickHouse® 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 | 4,096 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 ClickHouse® hosts in a non-sharded cluster when using HDD or SSD network storage | 1 | 7 |
| Number of ClickHouse® hosts in a non-sharded cluster when using non-replicated SSD storage | 3 | 7 |
| Number of ClickHouse® hosts in a non-sharded cluster when using local SSD storage | 2 | 7 |
| Number of shards in a sharded cluster | 1 | 50 |
| Number of hosts in a shard when using network HDD or SSD storage | 1 | 7 |
| Number of hosts in a shard when using non-replicated SSD storage | 3 | 7 |
| Number of hosts in a shard when using local SSD storage | 2 | 7 |
| Total number of hosts per cluster | 1 | 353 (50 shards × 7 hosts + 3 ZooKeeper hosts) |
| Amount of data per host when using network HDD or SSD storage (for Intel Broadwell and Intel Cascade Lake) | 10 GB | 4,096 GB |
| Amount of data per host when using network HDD or SSD storage (for Intel Ice Lake) | 10 GB | 8,192 GB |
| Amount of data per host when using non-replicated SSD storage | 93 GB | 16,368 GB |
| Amount of data per host when using local SSD storage (for Intel Broadwell and Intel Cascade Lake) | 100 GB | 1,500 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 |
ClickHouse® is a registered trademark of ClickHouse, Inc.