Home > Workload Solutions > SAP > Guides > SAP HANA TDI Guides > Business Continuity and Disaster Recovery with Dell PowerMax Storage for SAP HANA TDI Deployments > Detailed steps
The following steps include command examples.
Note: For a full explanation of the command structure, see Dell Solutions Enabler SRDF Family: CLI User Guide.
#cat ERPPAIRS.txt
025 03D
026 03E
027 03F
028 046
029 047
030 048
symdev –sid 016 –dev 03D, 03E,03F, 046, 047, 048 write_disable
symrdf createpair –sid 790 –file ERPPAIRS.txt –rdfg 1 –type R1 –invalidate R2 –rdf_mode acp_disk
symcg –sid 790 –cg HANA_CG add dev 025 ERP_SAPMNT
symcg –sid 790 –cg HANA_CG add dev 026 ERP_USRSAP
symcg –sid 790 –cg HANA_CG add dev 027 ERP_ORACLE
symcg –sid 790 –cg HANA_CG add dev 028 SLT_SAPMNT
symcg –sid 790 –cg HANA_CG add dev 029 SLT_USRSAP
symcg –sid 790 –cg HANA_CG add dev 030 SLT_ORACLE
Display the composite group details:
symrdf –cg HANA_CG query
symcg –sid 016 –cg HANA_CG_REMOTE add dev 03D ERP_SAPMNT
symcg –sid 016 –cg HANA_CG_REMOTE add dev 03E ERP_USRSAP
symcg –sid 016 –cg HANA_CG_REMOTE add dev 03F ERP_ORACLE
symcg –sid 016 –cg HANA_CG_REMOTE add dev 046 SLT_SAPMNT
symcg –sid 016 –cg HANA_CG_REMOTE add dev 047 SLT_USRSAP
symcg –sid 016 –cg HANA_CG_REMOTE add dev 048 SLT_ORACLE
Display the composite group details:
symrdf –cg HANA_CG query
symrdf –cg HANA_CG set mode acp_disk
symrdf –cg HANA_CG establish
Verify the status of the synchronization:
symrdf –cg HANA_CG query
After the values for R2 Inv Tracks are close to zero, continue to the next step.
symrdf –cg HANA_CG set mode sync
symrdf –cg HANA_CG set mode async
Verify the new status of the SRDF pairs:
symrdf –cg HANA_CG query
symcg –cg HANA_CG enable
Ensure the consistency of the SRDF pairs:
symrdf –cg HANA_CG query
Note: If a planned or unplanned failover or restore operation is required, you can also perform these operations by consulting use case 2 and use case 3. After being failed over or restored, the SAP ERP, SAP LT, and SAP HANA systems can be restarted. The SAP LT replication jobs can be manually restarted and replication from the SAP ERP system to SAP HANA can continue without tables having to be dropped and reloaded into SAP HANA.