A storage plan is a subscription-based resource plan for PolarDB. You can use storage plans to offset storage fees and fees for level-1 backups that exceed the free quota. Storage plans can help you reduce costs for storage resources and level-1 backups. A storage plan of larger capacity and longer duration delivers higher cost reduction. For example, a monthly storage plan provides 10%-45% savings when compared with the price of a comparable pay-as-you-go cluster. The longer the duration of the plan is, the more you save. If you purchase annual storage plans, you can save an additional 15% off the monthly price. This topic describes the billing rules of storage plans and how to purchase a storage plan.
Fees that can be offset by storage plans
You are eligible for storage plans when you use the following resources:
Storage for pay-as-you-go clusters
The storage of each PolarDB cluster is charged based on the volume and storage duration of data. If you require a large storage capacity, such as 1,000 GB or more, we recommend that you use storage plans to reduce costs.
NoteYou can use storage plans only for clusters that use the pay-as-you-go billing method for storage.
Level-1 backups that exceed the free quota
The remaining capacity of a storage plan after offsetting the storage of PolarDB clusters is automatically used to offset the level-1 backup storage space that exceeds the free quota. If the remaining capacity of the storage plan is insufficient to offset the level-1 backup storage space, you are charged for additional storage space on a pay-as-you-go basis. For more information about the offset rules, see Use storage plans to offset level-1 backup storage fees.
Storage plans provide cost savings over regular pay-as-you-go plans. The larger the volume of the storage plan (capacity and duration), the more costs you save.
For more information, see Storage plans.
Prices of storage plans and discounts
This section describes the price comparison of different deductible capacity under the two purchase schemes of unused storage plans and monthly storage plans.
Capacity (GB) | Regions in the Chinese mainland (USD/month) (1.7% to 47.0% off compared with the pay-as-you-go billing method) | Hong Kong (China) and regions outside China (USD/month) (1.6% to 46.6% off compared with the pay-as-you-go billing method) |
50 | 28 (No discount) | 31 (No discount) |
100 | 55 (approximately 1.7% off) | 61 (approximately 1.6% off) |
200 | 109 (approximately 2.7% off) | 121 (approximately 2.4% off) |
300 | 163 (approximately 3% off) | 182 (approximately 2.6% off) |
500 | 271 (approximately 3.2% off) | 302 (approximately 2.6% off) |
1,000 | 490 (approximately 12.5% off) | 550 (approximately 11.3% off) |
2,000 | 980 (approximately 12.5% off) | 1,090 (approximately 12.1% off) |
3,000 | 1,210 (approximately 28.0% off) | 1,340 (approximately 28.0% off) |
5,000 | 2,020 (approximately 28.0% off) | 2,230 (approximately 28.1% off) |
10,000 | 3,260 (approximately 41.8% off) | 3,630 (approximately 41.5% off) |
20,000 | 6,510 (approximately 41.9% off) | 7,250 (approximately 41.5% off) |
30,000 | 9,760 (approximately 42.0% off) | 10,870 (approximately 41.5% off) |
50,000 | 14,860 (approximately 47.0% off) | 16,550 (approximately 46.6% off) |
100,000 | 29,720 (approximately 47.0% off) | 33,110 (approximately 46.6% off) |
200,000 | 59,440 (approximately 47.0% off) | 66,220 (approximately 46.6% off) |
Precautions
Storage plans can be applied to all PolarDB clusters in the regions that are specified by the Resource Plan Type parameter. You can select Chinese Mainland or Outside Chinese Mainland for the parameter.
If the storage plan capacity is insufficient, you can purchase a new storage plan or upgrade the storage plan. For information about how to upgrade a storage plan, see the "Upgrade a storage plan" section of the Renew or upgrade a storage package topic. You cannot downgrade a storage plan after you purchase it.
If the amount of used storage exceeds the capacity of your storage plan, you are charged for excess storage usage on a pay-as-you-go basis.
For example, you created three PolarDB clusters that each have 400 GB of storage. If you purchase a storage plan that has 1,000 GB of capacity and the clusters share the storage plan, the excess 200 GB of storage usage is charged on a pay-as-you-go basis. For more information, see View the database storage usage.
Procedure
Log on to the PolarDB console.
In the upper-left corner of the page, click Create Cluster.
Set Billing Method to Storage Plan and configure the parameters described in the following table.
Parameter
Description
Plan Type
Chinese Mainland: The storage plan can be used by all PolarDB clusters that are deployed in regions inside the Chinese mainland, such as China (Hangzhou), China (Shanghai), and China (Beijing).
Outside Chinese Mainland: The storage plan can be used by all PolarDB clusters that are deployed in regions outside the Chinese mainland, such as UK (London) and Singapore.
Size
The storage capacity of the storage plan.
Storage Plan Price
Pricing details of storage plans.
NotePolarDB provides the Resource Plan Calculator that allows you to estimate the required compute capacity and storage capacity based on your business requirements and usage duration. The calculator can also provide recommendations on the specifications of storage plans and compute plans.
Duration
The validity period of the storage plan.
NoteIf you purchase a storage plan for one year or more, you can save an additional 15% off the monthly price.
Click Buy Now.
Read and select the Terms of Service, and then click Pay to complete the payment.
Click Purchase.