You can configure the number of elastically reserved compute units (CUs) for a quota that can be dynamically reserved computing resources based on your business requirements. After you evaluate your business, you can purchase reserved computing resources and specify a new quota plan and time plan for auto scaling of computing resources. This topic describes the billing rules and usage notes of elastically reserved CUs.
Basic resources
Basic resource | Description | Billing |
Reserved computing resources | Optional. The resource pool is an exclusive resource pool. You must have subscription-based reserved computing resources before you can scale out computing resources based on your business requirements. Note The amount of computing resources is calculated based on CUs. One CU is equal to 4 GB of memory and 1 CPU core. | You can directly configure the number of elastically reserved CUs for a subscription quota on the Quotas page in the MaxCompute console. For more information about billing rules, see Computing pricing (pay-by-the-hour). |
Limits
You can configure elastically reserved CUs only after you purchase subscription reserved computing resources. For more information about how to configure elastically reserved CUs, see Manage quotas in the new MaxCompute console. In addition, the maximum number of elastically reserved CUs that can be configured must be equal to the number of subscription-based reserved CUs and cannot exceed 10,000 CUs. You must check inventory data when you configure elastically reserved CUs. The minimum number of elastically reserved CUs is 50 and the step size is 50.
Usage notes
For more information about how to activate the subscription MaxCompute service, see Activate MaxCompute and DataWorks.
After you activate the subscription MaxCompute service, you can configure a quota on the Quotas page in the MaxCompute console.
Configure the number of elastically reserved CUs in a quota plan based on your business requirements. Then, make the configuration immediately take effect to apply the quota plan.
Configure multiple quota plans. The quota plans enable the system to automatically use different quota configurations based on the time plan. This way, elastically reserved CUs can be scaled out or scaled in during different periods of time.
For more information about how to configure a quota, see Manage quotas in the new MaxCompute console.
After you configure elastically reserved CUs for a quota, you can use computing resources of the quota. For more information about how to use computing resources of a quota, see Use of computing resources.