Placement Groups
A cloud server can be added to a placement group. Servers in a group can be located on different physical hosts — this increases the resiliency of the infrastructure.
A placement group is created for a specific pool. In this case, the cloud servers in the group may be in different segments within the pool.
Accommodation Policy
When creating a group you can select a group policy — this determines how servers will be placed on physical hardware:
- preferably on different hosts (soft-anti-affinity) — the system will tend to place servers on different hosts. If there is no suitable host when the server is created, it will be created on the same host;
- must be on different hosts (anti-affinity) — servers in a group must be located on different hosts. If we don't find a suitable host, the server will not be created.
Restrictions
A group can only be created for one pool.
A maximum of 100 placement groups can be created in one cloud platform project.
A maximum of 15 cloud servers can be in the same group at the same time.
You can add a cloud server to a placement group only when create cloud server.
Cost
Creating a placement group is free of charge.
Only the cloud servers in the group and other cloud-platform-computing-resources are paid according to cloud-platform-payment-model.