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 explains the options to move or fail over the SAP HANA persistent devices to the remote site, as illustrated in the following figure, by using SRDF/S or SRDF/A. If a disaster occurs, use this use case to enable the database persistence (R2 devices) for the standby SAP HANA installation at the remote site.
After the source site is repaired and is back online, establish SRDF replication from the destination to the source array, as shown in the following figure, by swapping the personality of the R1 and R2 devices. This ensures that the production data is protected while SAP HANA is running at the remote site.