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    Hologres:Upgrade or downgrade instance specifications

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    Hologres:Upgrade or downgrade instance specifications

    Last Updated:Mar 01, 2026

    Adjust the compute and storage resources of a Hologres instance to match your workload demands.

    Prerequisites

    Before you begin, make sure that you have:

    • No unpaid orders or overdue payments on your Alibaba Cloud account. Check your account status on the User Center page

    • A Hologres instance in the Normal state. For more information, see Instance list

    Impact of specification changes

    The impact on service availability depends on whether you change storage or compute resources.

    Storage resource changes

    Billing method Impact
    Pay-as-you-go No storage quota to adjust. Storage is billed based on actual usage.
    Subscription No impact. Querying and writing data continues normally during the process.

    Compute resource changes

    Subscription and pay-as-you-go instances behave identically for compute resource changes.

    General-purpose instances

    For general-purpose instances, the service is unavailable during compute resource upgrades or downgrades. Perform these operations during off-peak hours and make sure your application has a reconnection mechanism. The process involves reallocating compute resources and updating metadata and typically takes 2 to 5 minutes.

    Compute group instances

    Change type Impact
    Reserved compute resources for compute groups No impact on normal usage of individual compute groups.
    Number of Gateway nodes Causes a transient disconnection for all compute groups. Reconnect after the change completes.
    Configuration of a single compute group See Compute group management.

    Billing

    For details about how specification changes affect billing, see Billing overview.

    Upgrade an instance

    1. Log on to the Hologres Management Console and click Instances in the left-side navigation pane.

    2. On the Instances page, click the name of the instance that you want to upgrade.

    3. On the Instance Details page, click Upgrade.

    4. In the confirmation dialog box, click Upgrade.

      The instance does not accept any operations during the upgrade. The process involves reallocating compute resources and updating metadata and typically takes 2 to 5 minutes. Perform this operation during off-peak hours and make sure your application has a reconnection mechanism.

    5. On the Upgrade/Downgrade page, select the Computing Resources specification and set the Storage Resources quota.

      Note

      Only subscription instances support setting a storage resource quota.

    6. Select Service Agreement and click Buy Now.

    Downgrade an instance

    1. Log on to the Hologres Management Console and click Instances in the left-side navigation pane.

    2. On the Instances page, click the name of the instance that you want to upgrade.

    3. On the Instance Details page, click Downgrade.

    4. In the confirmation dialog box, click Downgrade.

      The instance does not accept any operations during the downgrade. The process involves reallocating compute resources and updating metadata and typically takes 2 to 5 minutes. Perform this operation during off-peak hours and make sure your application has a reconnection mechanism.

    5. On the Downgrade page, select the Computing Resources specification and set the Storage Resources quota.

      Note

      Only subscription instances support setting a storage resource quota.

    6. Select Service Agreement and click Buy Now.

    Verify the change

    After the operation completes:

    1. Go to the Instance Details page in the Hologres Management Console.

    2. Confirm that the Computing Resources and Storage Resources values reflect the new specifications.

    3. Run a query to verify that the instance is operating normally.