You should be familiar with the following Disaster Recovery terminology.
| Terminology | Description |
|---|---|
| Coalesce | To remove the oldest snapshot by merging it with the next oldest snapshot. |
| Destination VM | The VM to which the source VM is being replicated. Depending on the situation, either the primary VM or the DR VM can be the destination VM. |
| DR VM | Initially, the everRun VM to which the primary VM is being replicated. Under normal operating circumstances, the DR VM is not running or serving clients. In the case of either a planned maintenance period or unplanned failure of the everRun system on which the primary VM exists, you can manually start the DR VM to serve clients |
| Primary VM | Initially, the everRun VM that is under DR protection. Under normal operating circumstances, the primary VM is running and serving clients, and snapshots of it are taken periodically and are replicated to another everRun system. |
| Recovery Point Objective (RPO) | The RPO value determines the frequency of snapshots and therefore the maximum acceptable period during which data might be lost from a VM. The RPO value depends on the speed of the network between the primary VM and the DR VM sites, as well as how quickly data changes between snapshots. See One View and Disaster Recovery Considerations and Requirements for the allowed RPO values. |
| Recovery Time Objective (RTO) | The targeted duration of time within which a VM must be restored in order to avoid unacceptable consequences. The RTO value depends on the time it takes an administrator to perform external network reconfigurations to make the DR VM available to clients that previously accessed the primary VM. |
| Source VM | The VM that is currently running and serving clients, and that is capable of being replicated to a remote site. Depending on the situation, either the primary VM or the DR VM can be the source VM. |
|
Product Support and Downloads
|
About Stratus
|
|
Product Documentation (PDF Format)
|
About Help
|