Help Center/ SAP Cloud/ Best Practices/ Best Practices of SAP System Capacity Expansion/ Upgrading ECS Configuration/ Modifying ECS Specifications
Updated on 2023-05-29 GMT+08:00
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Modifying ECS Specifications

This section describes how to modify ECS specifications. In this section, a HANA database ECS is changed from e1.4xlarge to e1.8xlarge.

For details, see General Operations of Modifying Specifications.

  • Modifying ECS specifications, such as the number of vCPUs or memory, may affect the ECS performance. The specifications of an ECS can be modified only when the ECS is in the Stopped state.
  • Do not power on the ECS during the specification modification. Otherwise, the modification will fail. The new specifications take effect immediately after the modification is complete.

Preparations

To prevent NIC IP address flapping after the specification is modified, run the following commands on the ECS to delete the network rules files whose names contain persistent and net from the directory before modifying the specification:

rm -fr /etc/udev/rules.d/*net*persistent*.rules

rm -fr /etc/udev/rules.d/*persistent*net*.rules

Procedure

  1. Log in to HUAWEI CLOUD management console.
  2. Choose Service List > Computing > Elastic Cloud Server.
  3. In the ECS list, select the ECS whose specifications you want to modify and click Stop.

    Stop the SAP applications running on the ECS before stopping the ECS.

  4. In the displayed dialog box, click Yes.
  5. After the ECS is stopped, locate the row that contains the ECS, click More in the Operation column, and choose Modify Specifications.
  6. Select a flavor, for example: e1.8xlarge, and click Submit.
  7. Confirm the change details, select I have read and agree to the Huawei Image Disclaimer, and click Submit Application.

    It takes about 2 minutes to change the ECS specification.