Help Center/ Data Lake Insight/ User Guide/ Creating an Elastic Resource Pool and Queues Within It/ Managing Elastic Resource Pools/ Modifying Specifications
Updated on 2024-12-28 GMT+08:00
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Modifying Specifications

Scenario

If the number of CUs of an yearly/monthly elastic resource pool is within the specified range (yearly/monthly CUs), then the resource pool is billed on a yearly/monthly basis. Any excess CUs beyond the specified range (yearly/monthly CUs) are billed by CUH. You can adjust the specifications to make billing more cost-effective based on actual CU usage.

For example, if the current specification for the elastic resource pool (yearly/monthly CUs) is 64 CUs, but most of the time the actual usage exceeds 128 CUs, the 64 CUs will be billed annually/monthly, while the excess 64 CUs will be billed by CUH. To achieve more cost-effective billing, you can change the specification of the elastic resource pool to 128 CUs. Once the specification change is successful, the entire 128 CU range will be billed yearly/monthly, resulting in a more cost-effective billing.

If the current specifications of your elastic resource pool do not meet your service needs, you can modify them using the change yearly/monthly CUs function.

Precautions

Currently, only yearly/monthly elastic resource pools support specification (yearly/monthly CUs) changes.

Scaling Out

  1. In the navigation pane on the left of the console, choose Resources > Resource Pool.
  2. Locate the elastic resource pool you want to scale out, click More in the Operation column, and select Modify Yearly/Monthly CU.
  3. On the Modify Yearly/Monthly CU page, set Operation to Scale-out and specify the number of CUs you want to add.
    Figure 1 Scaling out
  4. Confirm the changes and click OK.
  5. Choose Job Management > SQL Jobs to view the status of the SCALE_POOL SQL job.

    If the job status is Scaling, the elastic resource pool is scaling out. Wait until the job status changes to Finished.

Scaling In

By default, the minimum number of CUs is 16. That is, when the specifications of an elastic resource pool are 16 CUs, you cannot scale the pool down.

  1. In the navigation pane on the left, choose Resources > Resource Pool.
  2. Locate the elastic resource pool you want to scale in, click More in the Operation column, and select Modify Yearly/Monthly CU.
  3. On the Modify Yearly/Monthly CU page, set Operation to Scale-in and specify the number of CUs you want to decrease.
    Figure 2 Scaling in
  4. Confirm the changes and click OK.
  5. Choose Job Management > SQL Jobs to view the status of the SCALE_POOL SQL job.

    If the job status is Scaling, the elastic resource pool is scaling in. Wait until the job status changes to Finished.