Home > Workload Solutions > SAP > Guides > SAP HANA TDI Guides > Business Continuity and Disaster Recovery with Dell PowerMax Storage for SAP HANA TDI Deployments > Business continuity use cases
SAP HANA can be enhanced with various business continuity solutions. PowerMax SRDF replicates the SAP HANA persistent devices to a remote site, either nearby or at a distance. The business continuity solutions provide DR protection by using SRDF in synchronous mode for close distances or asynchronous mode for long distances.
Adding PowerMax SnapVX extends the database recovery protection to include a remote restartable and writable replica of SAP HANA persistent devices for repurposing. On the source site, PowerMax SnapVX clones can provide rapid recovery of the database.
The seven use cases in this guide provide best practices for implementing SAP HANA storage-based replication on PowerMax arrays, using proven SRDF replication technology that is already widely used by customers.
The use cases introduce SnapVX, which adds new ease-of-use features and increased scalability. The use cases illustrate how SnapVX creates point-in-time copies of devices, which can be used for backups, decision support, data warehouse refreshes, or any other process.
The use cases also show how SRDF can be implemented to provide remote restartable SAP HANA databases.
The business continuity use cases, which include descriptions and command examples for reference, are:
Note: SRDF/Metro and SAP HANA are outside the scope of this guide. With SAP HANA SP05 Rev 53, SAP released a newer version of the storage connector fcClientMpath, which uses the command mpathpersist rather than sg_persist. The main difference is that mpathpersist puts the reservations on the devices, enabling device paths to be added while the mount process is ongoing. To use SRDF/Metro for SAP HANA scale-out systems in a physical environment, the storage connector fcClientMpath is required.