Hologres:Purchase a Hologres instance

Procedure

1. Go to the Hologres product page.

2. Click Buy Now.

   Note

   • If the RAM user that you use to purchase a Hologres instance does not have the required permissions, grant the permissions to the RAM user. For more information, see Grant permissions to a RAM user.

   • The first time you purchase a Hologres instance, you must click Create Service-linked Role in the lower part of the buy page.

3. Select an option for the Product Type parameter.

   Product Type	Description
   Subscription and Pay-as-you-go	If you select Subscription or Pay-as-you-go, exclusive resources are allocated to the instance. The instance can respond to queries in milliseconds and provide comprehensive features. Subscription: This product type provides significant savings and is suitable for scenarios in which you want to use the instance for a long period of time. Pay-as-you-go: This product type is billed on an hourly basis and is suitable for scenarios in which you want to use the instance for a short period of time. You can change the billing method of an instance from subscription to pay-as-you-go or from pay-as-you-go to subscription.
   Hologres Shared Cluster (Lakehouse Acceleration Edition)	Differences from exclusive instances: Feature: Hologres Shared Cluster instances support only accelerated queries on MaxCompute data and Object Storage Service (OSS) data. You cannot import data to internal tables of Hologres Shared Cluster instances. Billing: You are charged based on the amount of data that is scanned in a query. For more information, see Billing. Scenarios: Hologres Shared Cluster instances can respond to queries within sub-seconds and are suitable for infrequent and accelerated queries on MaxCompute data or OSS data.

   You cannot change an instance that uses exclusive resources to a Hologres Shared Cluster instance or change a Hologres Shared Cluster instance to an instance that uses exclusive resources. For more information, see Overview.

4. Select a region and a zone.

   • You can connect a Hologres instance to an Alibaba Cloud service over the internal network if the Hologres instance and the Alibaba Cloud service reside in the same region and virtual private cloud (VPC). If the Hologres instance and the Alibaba Cloud service reside in different regions, you can connect the instance to the service over the Internet or the internal network by following the instructions in Overview of VPC connections.

   • You cannot change the region or zone of an existing instance.

   • The connectivity and performance of the instance are not subject to zones.

5. Configure the parameters based on the product type.

Subscription and pay-as-you-go instances

Parameter	Description
Specifications	General-purpose instances are primary instances. Read-only secondary instances can be associated with a primary instance to support load isolation and horizontal scaling.
Enable Serverless Computing	After the Serverless Computing feature is enabled, specific data manipulation language (DML) statements can be executed by using resources in the serverless resource pool. This prevents resource waste and competition. Note The Serverless Computing feature is in public preview and is available in specific regions and zones. After you apply for the free trial of the feature, you can use the feature free of charge. For more information, see User guide on Serverless Computing. You can enable or disable the Serverless Computing feature for an existing instance.
Storage resources	If you purchase a subscription instance, the Standard and Infrequent Access parameters are available. You are charged for resources that exceed the purchased specifications on a pay-as-you-go basis. You can also purchase subscription resources for an existing instance. If you do not purchase subscription resources, you are charged on a pay-as-you-go basis by default. You do not need to configure the Backup Set Storage parameter because backup set storage resources are billed on a pay-as-you-go basis.
Network resources	VPC: If you want to connect the Hologres instance to an Alibaba Cloud service over the internal network, select the VPC in which the Alibaba Cloud service resides. If the Hologres instance and the Alibaba Cloud service reside in different VPCs, you can connect the instance and the service over the Internet or the internal network by following the instructions in Overview of VPC connections. vSwitch: The connectivity and performance of the instance are not subject to vSwitches. Note You are not charged for VPCs and vSwitches.

Hologres Shared Cluster instances

Network resources:

• Virtual Private Cloud (VPC): If you want to connect the Hologres instance to an Alibaba Cloud service over the internal network, select the VPC in which the Alibaba Cloud service resides. If the Hologres instance and the Alibaba Cloud service reside in different VPCs, you can connect the instance and the service over the Internet or the internal network by following the instructions in Overview of VPC connections.

• vSwitch: The connectivity or performance of the instance are not subject to vSwitches.

Note

You are not charged for VPCs and vSwitches.

6. Configure the Instance Name, Resource Group, and Duration parameters. The Duration parameter is available only for subscription instances. Then, click Buy Now.

Note

The first time you purchase a Hologres instance, you must click Create Service-linked Role in the lower part of the buy page.

7. Confirm the order, read the terms of service, select the check box, and then click Pay.

8. The Hologres instance is created within a few minutes.