Virtual Volumes Replication Architecture
A minimum of two DataCore SANsymphony server groups are required to enable virtual volumes (vVol) replication. These server groups must be configured as replication partners.
When a new virtual machine (VM) is created with the replication policy, or the policy of an existing VM is modified with a replication policy, DataCore VASA Provider automatically creates a pair of vVols at the source and destination sides, and sets up replication between them.
VMware Site Recovery Manager is required for the orchestration of failover and failback in case of any disaster. See Configuring Site Recovery Manager for more information.
| Terminology | |
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Fault Domain |
A fault domain is a set of components that share a single point of failure. In virtual volumes (vVol) replication, a fault domain is one of the endpoints of a replication agreement. In DataCore SANsymphony, a single server corresponds to one fault domain. Therefore, if a server group contains two servers, DataCore VASA Provider will treat it as two fault domains. |
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Replication Group |
A replication group represents the minimum unit of failover. All vVols belonging to a replication group must failover atomically. DataCore VASA Provider supports automatic replication group creation. Each virtual machine (VM) belongs to its own replication group. A new replication group is created the first time a VM is created. |
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Target Site/ Remote Site |
The target or remote site is the SANsymphony server where vVols are replicated. |
| Target Container | The target container is the name of the virtual disk template (or container) on the target SANsymphony server, where the replication of the destination vVols is created. |