Overview of deployment policy
Updated at:2025-10-20
Overview of deployment policy
A deployment group is a strategy for managing the distribution of BCC instances, allowing you to implement disaster recovery capabilities and high availability when creating BCC instances.
Deployment policy
The deployment set supports a high-availability deployment strategy, which places a group of BCC instances on different underlying hardware to ensure high service availability.
- With the high-availability deployment strategy, all BCC instances in the deployment group are strictly distributed across different physical machines within the specified region.
- Under the high-availability deployment strategy, the creation of BCC instances may fail due to resource shortages in the region.
- Deployment sets cannot be combined with each other.
| Policy | Description |
|---|---|
| Host | All BCC instances in the same deployment group are strictly deployed across different physical machines within the specified region, primarily designed for BBC virtual machine instances. |
| Rack | All BCC instances in the same deployment group are strictly deployed across different physical machines within the specified region, mainly intended for EBC bare metal instances. |
| Switch | All BCC instances in the same deployment group are strictly deployed across different physical machines within the specified region, mainly intended for EBC bare metal instances. |
| Cluster | All BCC instances in the same deployment group are strictly deployed in the same network POD within the specified region, minimizing inter-instance communication latency. Currently, only instances that support ERI can be added to this type of deployment set. |
Usage restrictions
Before using a deployment group, please note the following:
| Item | Description |
|---|---|
| Quota | Count of deployment groups:
|
| Instance specification. |
|
Relevant operations
- [Create Deployment Group](BCC/Operation guide/Deployment group/Create Deployment Group.md)
- [Create BCC Instance within Deployment Group](BCC/Operation guide/Deployment group/Create BCC Instance within Deployment Group.md)
- [Modify Deployment Group Information](BCC/Operation guide/Deployment group/Modify Deployment Group Information.md)
- [Delete Deployment Group](BCC/Operation guide/Deployment group/Delete Deployment Group.md)
- [Adjust Deployment Group for Existing Instances](Adjust Deployment Group for Existing Instances.md)
- [Remove BCC Instance from Deployment Group](Remove BCC Instance from Deployment Group.md)
