Solution Design

Deployment Plan

Use HUAWEI CLOUD services for the deployment. Specifically, use ECS or BMS for server computing resources, and EVS and SFS for storage.

For the deployment solution design, refer to section Deployment Plan.

Networking Plan

A VPC is used on HUAWEI CLOUD, and subnets are created according to the networking best practices on HUAWEI CLOUD. On-premises IDC connects to HUAWEI CLOUD through EIP and VPN or Direct Connect.

For details, see Networking Plan.

Security Design

For details, see Security Design. Find more information in the SAP Security White Paper.

For details about permission management, see Service Account System Design.

Migration Solution

Redeploy the application servers and database server on HUAWEI CLOUD. For database migration, use the SAP solutions. Table 1 describes the recommended solutions.

**Table 1** Migration solutions
Object	Migration Solution	Description
Application servers	Redeployment	Redeployment on HUAWEI CLOUD
Database	DMO in SUM Classic migration of SAP HANA (only applicable to Java systems)	SAP provides the DMO in SUM to upgrade and migrate the SAP system to HUAWEI CLOUD SAP HANA. For details, see Database Migration Option (DMO) of SUM. Alternatively, use the Classical Migration to SAP HANA solution. Use SUM to upgrade the system to a supported version, and then use System Copy of SWPM to migrate the system onto the HANA database. For details, see Classical Migration to SAP HANA.

Generally, data is transmitted over the network. The optimal network bandwidth is higher than 50 Mbit/s.

Service Switchover Plan

The migration implementor is responsible for the service switchover plan. Table 2 shows an example plan.

**Table 2** Switchover plan example
Migration Solution	Switchover Plan	Impact
Application servers are newly deployed, and database servers are migrated using DMO.	Deploy and commission the new system. Stop source database services and use DMO to migrate data to the target system.	The downtime relates to the service data volume and network bandwidth. The service interruption time of this plan is long.