Home > Workload Solutions > SAP > Guides > SAP HANA TDI Guides > Business Continuity and Disaster Recovery with Dell PowerMax Storage for SAP HANA TDI Deployments > Introduction
This use case describes how to establish remote replication for DR protection using PowerMax SRDF in a synchronous or asynchronous mode. The protection is established on the SAP HANA database persistent (data and log) devices.
In this use case, the R1 devices in the source array are replicated to the R2 devices in the target array. While the replication is active writing to the R2 devices is not possible.
The following figure illustrates this use case: