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On the ECS homepage, choose Learn more > Getting Started > Initializing an EVS Disk (Linux) to view the hard disk initialization information. In the cross-AZ scenario, create three ECSs and attach a SCSI disk to each ECS.
On the HUAWEI CLOUD console, log in to the ECS as the root user using VNC, right-click, and choose Open in Terminal. Go to the swpm directory and run the ./sapinst command. Open a browser, enter https://host name:4237/sapinst/docs/index.html in the address box, and press Enter.
Log in to the SAP HANA ECS and check whether the IP address of the DNS server is configured in the /etc/resolv.conf file. If not, write the IP address of the DNS server into the /etc/resolv.conf file. Parent topic: Resource Preparation
This section uses an SAP HANA system with SAP HANA Studio installed on a Windows ECS as an example to describe how to completely back up SAP HANA data. For details about operation requirements and notes, see SAP HANA Database Backup and Recovery released by SAP.
Enter the AK and SK of the HUAWEI CLOUD account of the destination ECS and the password of the HTTP proxy server as prompted. Create and view the AK and SK on the management console.
For details, see section Logging In to a Linux ECS Using an SSH Key. On the local computer, install the WinSCP software. Upload the certificate private key file (.pem file) to the NFS server.
Parameter description Name Description Example Value Region Select the region where the destination ECS is located. By default, the region is the one set for the current migration project, but you can select another region if needed.
NAT Server Provides the capability to switch to the HANA ECS using SSH. It allows you to switch to an SAP HANA node from the NAT server using Secure Shell (SSH). SFS Scalable File Service (SFS) provides the file sharing service.
The security groups must be configured according to the "minimum permission" principle so that a minimum number of ECS ports are opened. Figure 4 shows an example for configuring the security groups. You need to configure them based on your own ports.
The security groups must be configured according to the "minimum permission" principle so that a minimum number of ECS ports are opened. Figure 4 shows an example for configuring the security groups. You need to configure them based on your own ports.
Synchronize incremental data to the target ECS and switch services to the target system after the synchronization. Monitor the target system for about one week to check if the target system is running properly. After the verification, release source system resources.
maintenance mode first. crm configure property maintenance-mode=true Exit the maintenance mode after the modification is complete. crm configure property maintenance-mode=false If you need to stop or restart the node, manually stop the cluster service. systemctl stop pacemaker After the ECS
Upload the obtained installation package to the /hana/shared directory on the ECS where the SAP HANA software is to be installed and decompress it.
If a source server and a target ECS are connected through Direct Connect or VPN, ensure that the source server to be migrated can access the SMS.
Log in to the SAP HANA ECS and check whether the IP address of the DNS server is configured in the /etc/resolv.conf file. If not, write the IP address of the DNS server into the /etc/resolv.conf file. Parent topic: Creating ECSs
For details about SAP HANA instance ID planning, see SAP HANA ECS Planning. For more information about the specific ports to be accessed by SAP software and security group rules, see SAP official documents.
Then, use SSH to switch to the ECS that will work as the active node.
For details, see How Can I Configure the NTP and DNS Servers for an ECS?. (Optional) Install and configure Cloud-Init. For details, see Installing Cloud-Init and Configuring Cloud-Init. For more about Cloud-Init, see Cloud-init.
The ASCS instance is installed on the active ECS, and the ERS instance is installed on the standby ECS. The time synchronization and disk formatting must be performed on the two ECSs. SAP HANA databases are deployed in the active/standby mode.
The security groups must be configured according to the "minimum permission" principle so that a minimum number of ECS ports are opened. Figure 3 shows an example for configuring the security groups. You need to configure them based on your own ports.
