Overview

Reserved instance (RI) is a billing discount applied to the use of pay-as-you-go CVM instances under your account. These CVM instances must exactly match attributes of the RI you purchased to benefit from the billing discount during the RI term. RI provide you with a significant discount compared to pay-as-you-go billing.

Note：

RI is currently in beta. To use it, click here to submit an application. After your application is approved, log in to the Tencent Cloud Console and go to Price Calculator to query the price.

Currently, RIs are non-refundable.

Configurations of an RI cannot be changed after purchase. The RI billing discount will no longer apply to the matched instance if you change its configurations.

The RI billing discount will still apply to matched CVM instances even after they are proactively or forcibly shut down.

Attributes

• Region: the physical location of an IDC, such as Silicon Valley.
• Availability zone: a Tencent Cloud IDC with independent power supply and network in the above region, such as Silicon Valley Zone 1.
• Instance type: a Tencent Cloud CVM instance family type, such as Standard.
• Specification: RI specifications, such as S4.SMALL.
• Operating system: Linux OS

The pay-as-you-go CVM instances must exactly match RI attributes to benefit from the billing discount during the RI term.

Concept comparison

Use limits

To check availability zones that support RIs, please use the DescribeReservedInstancesOfferings API.

Operating system: currently, RI only supports Linux CVM instances.

Payment method: there are three payment options, namely All Upfront, Partial Upfront, and No Upfront.

Terms: 1 year

Quota: each user can have up to 20 RIs in one availability zone.