Storage prices vary based on the billing method and storage type. You can select a billing method from the guide section on the right side of the page to quickly view the billing rules for storage. PolarDB provides storage plans to help you reduce storage costs.
Subscription prices
The following tables describe the prices of different storage types.
The available storage types vary based on the Edition of a cluster. For information about the storage types available for a cluster of a specific edition, go to the buy page.
Enterprise SSD (ESSD) AutoPL disks deliver the following performance types: baseline performance, provisioned performance, and burst performance. The baseline performance of an ESSD AutoPL disk is the same as the performance of an ESSD at performance level 1 (PL1 ESSD) that has the same specifications. For more information, see ESSD AutoPL disks. You can configure the IOPS performance of ESSD AutoPL disks when you purchase a cluster.
If the amount of your business data exceeds the pre-purchased storage, the processing rules vary based on the storage type.
ESSDs do not support auto-scaling. You must use Database Autonomy Service (DAS) to scale up the storage. To prevent your business from being affected due to insufficient storage, you can manually configure automatic storage scaling. For more information, see Configure automatic storage scaling for ESSDs. After you enable automatic storage scaling, the storage is automatically scaled up when the trigger conditions are met. The payment is deducted from your account upfront based on the scaled-up capacity. If your Alibaba Cloud account does not have sufficient balance to support the scale-up operation, the operation fails.
PSL4 and PSL5 support auto-scaling based on the actual storage usage. No additional operations are required. You are charged for storage usage that exceeds the subscribed capacity based on the pay-as-you-go billing method. If you purchase a storage plan, the excess storage usage is counted against the available capacity in the storage plan first. After the available capacity in the storage plan is exhausted, you are charged based on the pay-as-you-go billing method. For example, you purchase a storage capacity of 100 GB by using the subscription billing method and a storage plan of 50 GB, but have 200 GB of data. For the 100 GB of data that exceeds the purchased storage capacity, 50 GB is offset by the storage plan. You are charged for the remaining 50 GB based on the pay-as-you-go billing method.
Storage type | Price (USD per GB-month) | |||||||
Regions in the Chinese mainland | China (Hong Kong) | Japan (Tokyo) | Singapore | Indonesia (Jakarta) | Germany (Frankfurt) | |||
ESSD PL0 | Dual-zone (hot standby storage cluster enabled) | 0.12 | 0.12 | 0.20 | 0.23 | 0.22 | 0.21 | |
Dual-zone (hot standby storage cluster and compute cluster enabled) | ||||||||
Three-zone (hot standby storage cluster and logger node enabled) | ||||||||
Single-zone (hot standby storage cluster disabled) | 0.08 | 0.08 | 0.12 | 0.15 | 0.13 | 0.13 | ||
ESSD PL1 | Dual-zone (hot standby storage cluster enabled) | 0.25 | 0.25 | 0.39 | 0.47 | 0.43 | 0.42 | |
Dual-zone (hot standby storage cluster and compute cluster enabled) | ||||||||
Three-zone (hot standby storage cluster and logger node enabled) | ||||||||
Single-zone (hot standby storage cluster disabled) | 0.15 | 0.15 | 0.25 | 0.29 | 0.27 | 0.26 | ||
ESSD PL2 | Dual-zone (hot standby storage cluster enabled) | 0.49 | 0.49 | 0.79 | 0.94 | 0.86 | 0.84 | |
Dual-zone (hot standby storage cluster and compute cluster enabled) | ||||||||
Three-zone (hot standby storage cluster and logger node enabled) | ||||||||
Single-zone (hot standby storage cluster disabled) | 0.31 | 0.31 | 0.49 | 0.58 | 0.54 | 0.52 | ||
ESSD PL3 | Dual-zone (hot standby storage cluster enabled) | 0.98 | 0.98 | 1.58 | 1.87 | 1.72 | 1.67 | |
Dual-zone (hot standby storage cluster and compute cluster enabled) | ||||||||
Three-zone (hot standby storage cluster and logger node enabled) | ||||||||
Single-zone (hot standby storage cluster disabled) | 0.62 | 0.62 | 0.98 | 1.17 | 1.08 | 1.05 | ||
ESSD AutoPL | Dual-zone (hot standby storage cluster enabled) | Storage | 0.25 | 0.25 | 0.39 | 0.47 | 0.43 | 0.42 |
Provisioned IOPS | USD 0.011088 per IOPS-month | |||||||
Dual-zone (hot standby storage cluster and compute cluster enabled) | Storage | 0.25 | 0.25 | 0.39 | 0.47 | 0.43 | 0.42 | |
Provisioned IOPS | USD 0.011088 per IOPS-month | |||||||
Three-zone (hot standby storage cluster and logger node enabled) | Storage | 0.25 | 0.25 | 0.39 | 0.47 | 0.43 | 0.42 | |
Provisioned IOPS | USD 0.011088 per IOPS-month | |||||||
Single-zone (hot standby storage cluster disabled) | Storage | 0.15 | 0.15 | 0.25 | 0.29 | 0.27 | 0.26 | |
Provisioned IOPS | USD 0.006912 per IOPS-month | |||||||
Storage type | Price (USD per GB-month) | |||
Regions in the Chinese mainland | China (Hong Kong) and regions outside China | |||
PSL4 | Dual-zone (hot standby storage cluster enabled) | 0.2380 | 0.2630 | |
Dual-zone (hot standby storage cluster and compute cluster enabled) | ||||
Three-zone (hot standby storage cluster and logger node enabled) | ||||
Single-zone (hot standby storage cluster disabled) | 0.1190 | 0.1315 | ||
PSL5 | Dual-zone (hot standby storage cluster enabled) | 0.3650 | 0.4030 | |
Dual-zone (hot standby storage cluster and compute cluster enabled) | ||||
Three-zone (hot standby storage cluster and logger node enabled) | ||||
Single-zone (hot standby storage cluster disabled) | 0.1825 | 0.2015 | ||
Pay-as-you-go prices
The following tables describe the prices of different storage types.
The available storage types vary based on the Edition of a cluster. For information about the storage types available for a cluster of a specific edition, go to the buy page.
ESSD AutoPL disks deliver the following performance types: baseline performance, provisioned performance, and burst performance. The baseline performance of an ESSD AutoPL disk is the same as the performance of an ESSD at performance level 1 (PL1 ESSD) that has the same specifications. For more information, see ESSD AutoPL disks. You can configure the IOPS performance of ESSD AutoPL disks when you purchase a cluster.
If you select the ESSD storage type for a cluster, you must specify the storage capacity. You are charged per GB-hour based on the specified storage capacity. ESSDs does not support auto-scaling. You must use DAS to scale up the storage. To prevent your business from being affected due to insufficient storage, you can manually configure automatic storage scaling. For more information, see Configure automatic storage scaling for ESSDs. After you enable automatic storage scaling, the storage is automatically scaled up when the trigger conditions are met. The payment is deducted from your account upfront based on the scaled-up capacity. If your Alibaba Cloud account does not have sufficient balance to support the scale-up operation, the operation fails.
If you select the PSL4 or PSL5 storage type for the cluster, you do not need to specify the storage capacity. The storage capacity automatically scales up as the amount of data increases. You are charged based on your actual storage usage.
Storage type | Price (USD per GB-hour) | |||||||
Regions in the Chinese mainland | China (Hong Kong) | Japan (Tokyo) | Singapore | Indonesia (Jakarta) | Germany (Frankfurt) | |||
ESSD PL0 | Dual-zone (hot standby storage cluster enabled) | 0.0002565 | 0.0002565 | 0.0004104 | 0.0004872 | 0.0004488 | 0.0004360 | |
Dual-zone (hot standby storage cluster and compute cluster enabled) | ||||||||
Three-zone (hot standby storage cluster and logger node enabled) | ||||||||
Single-zone (hot standby storage cluster disabled) | 0.0001603 | 0.0001603 | 0.0002565 | 0.0003045 | 0.0002805 | 0.0002725 | ||
ESSD PL1 | Dual-zone (hot standby storage cluster enabled) | 0.0005128 | 0.0005128 | 0.0008205 | 0.0009744 | 0.0008974 | 0.0008718 | |
Dual-zone (hot standby storage cluster and compute cluster enabled) | ||||||||
Three-zone (hot standby storage cluster and logger node enabled) | ||||||||
Single-zone (hot standby storage cluster disabled) | 0.0003205 | 0.0003205 | 0.0005128 | 0.0006090 | 0.0005609 | 0.0005449 | ||
ESSD PL2 | Dual-zone (hot standby storage cluster enabled) | 0.0010256 | 0.0010256 | 0.0020513 | 0.0016410 | 0.0017949 | 0.0017436 | |
Dual-zone (hot standby storage cluster and compute cluster enabled) | ||||||||
Three-zone (hot standby storage cluster and logger node enabled) | ||||||||
Single-zone (hot standby storage cluster disabled) | 0.0006410 | 0.0006410 | 0.0010256 | 0.0012179 | 0.0011218 | 0.0010898 | ||
ESSD PL3 | Dual-zone (hot standby storage cluster enabled) | 0.0020513 | 0.0020513 | 0.0032821 | 0.0038974 | 0.0035898 | 0.0034872 | |
Dual-zone (hot standby storage cluster and compute cluster enabled) | ||||||||
Three-zone (hot standby storage cluster and logger node enabled) | ||||||||
Single-zone (hot standby storage cluster disabled) | 0.0012820 | 0.0012820 | 0.0020513 | 0.0024359 | 0.0022436 | 0.0021795 | ||
ESSD AutoPL | Dual-zone (hot standby storage cluster enabled) | Storage | 0.0005123 | 0.0005123 | 0.0008197 | 0.0009738 | 0.0008969 | 0.0008709 |
Provisioned IOPS | USD 0.0000154 per IOPS-hour | |||||||
Dual-zone (hot standby storage cluster and compute cluster enabled) | Storage | 0.0005123 | 0.0005123 | 0.0008197 | 0.0009738 | 0.0008969 | 0.0008709 | |
Provisioned IOPS | USD 0.0000154 per IOPS-hour | |||||||
Three-zone (hot standby storage cluster and logger node enabled) | Storage | 0.0005123 | 0.0005123 | 0.0008197 | 0.0009738 | 0.0008969 | 0.0008709 | |
Provisioned IOPS | USD 0.0000154 per IOPS-hour | |||||||
Single-zone (hot standby storage cluster disabled) | Storage | 0.0003200 | 0.0003200 | 0.0005120 | 0.0006092 | 0.0005615 | 0.0005440 | |
Provisioned IOPS | USD 0.0000096 per IOPS-hour | |||||||
Storage type | Price (USD per GB-hour) | |||
Regions in the Chinese mainland | China (Hong Kong) and regions outside China | |||
PSL4 | Dual-zone (hot standby storage cluster enabled) | 0.000500 | 0.000552 | |
Dual-zone (hot standby storage cluster and compute cluster enabled) | ||||
Three-zone (hot standby storage cluster and logger node enabled) | ||||
Single-zone (hot standby storage cluster disabled) | 0.000250 | 0.000276 | ||
PSL5 | Dual-zone (hot standby storage cluster enabled) | 0.000748 | 0.000850 | |
Dual-zone (hot standby storage cluster and compute cluster enabled) | ||||
Three-zone (hot standby storage cluster and logger node enabled) | ||||
Single-zone (hot standby storage cluster disabled) | 0.000385 | 0.000425 | ||
Serverless prices
The following tables describe the prices of different storage types.
The available storage types vary based on the Edition of the cluster. For the storage types available for a cluster of a specific database edition, go to the buy page.
If you select the PSL4 or PSL5 storage type for the cluster, you do not need to specify the storage capacity. The storage capacity automatically scales up as the amount of data increases. You are charged based on your actual storage usage.
Storage type | Price (USD per GB-hour) | |||
Regions in the Chinese mainland | China (Hong Kong) and regions outside China | |||
PSL4 | Dual-zone (hot standby storage cluster enabled) | 0.000500 | 0.000552 | |
Dual-zone (hot standby storage cluster and compute cluster enabled) | ||||
Three-zone (hot standby storage cluster and logger node enabled) | ||||
Single-zone (hot standby storage cluster disabled) | 0.000250 | 0.000276 | ||
PSL5 | Dual-zone (hot standby storage cluster enabled) | 0.000748 | 0.000850 | |
Dual-zone (hot standby storage cluster and compute cluster enabled) | ||||
Three-zone (hot standby storage cluster and logger node enabled) | ||||
Single-zone (hot standby storage cluster disabled) | 0.000385 | 0.000425 | ||
Storage plans
You can use storage plans to offset the storage usage of pay-as-you-go or serverless clusters.
You can also use storage plans to offset the storage usage of level-1 backups or data backups, level-2 backups, log backups, and cold data archiving.
You cannot use storage plans to offset the storage usage of subscription clusters.
Prices
The prices of storage plans vary based on the subscription duration and specifications. The higher the specifications and the longer the subscription duration, the more cost-effective a storage plan. For more information about the storage plan prices, see Prices.
Offset rules
A storage plan provides a fixed hourly quota to offset the storage usage of pay-as-you-go and Serverless clusters. For example, if you purchase a storage plan of 100 GB, you have a fixed quota of 100 GB per hour to offset the storage usage.
Storage type | Offset factor | Storage usage offset by using a 1-GB storage plan | ||||
Regions in the Chinese mainland | China (Hong Kong) and regions outside China | Regions in the Chinese mainland | China (Hong Kong) and regions outside China | |||
ESSD PL0 | Hot standby storage cluster and standby compute node enabled | 0.35 | 2.86 GB | |||
Hot standby storage cluster disabled | 0.22 | 4.55 GB | ||||
ESSD PL1 | Hot standby storage cluster and standby compute node enabled | 0.70 | 1.43 GB | |||
Hot standby storage cluster disabled | 0.44 | 2.27 GB | ||||
ESSD PL2 | Hot standby storage cluster and standby compute node enabled | 1.41 | 0.71 GB | |||
Hot standby storage cluster disabled | 0.88 | 1.14 GB | ||||
ESSD PL3 | Hot standby storage cluster and standby compute node enabled | 2.82 | 0.35 GB | |||
Hot standby storage cluster disabled | 1.76 | 0.57 GB | ||||
ESSD AutoPL | Hot standby storage cluster and standby compute node enabled | Storage | 0.70 | 1.43 GB | ||
Provisioned IOPS | 0.0206 | 0.0185 | 48.5437 provisioned IOPS | 54.0541 provisioned IOPS | ||
Hot standby storage cluster disabled | Storage | 0.44 | 2.27 GB | |||
Provisioned IOPS | 0.0129 | 0.0115 | 77.5194 provisioned IOPS | 86.9565 provisioned IOPS | ||
PSL4 | Hot standby storage cluster enabled | 0.65 | 1.54 GB | |||
Hot standby storage cluster disabled | 0.325 | 3.08 GB | ||||
PSL5 | Hot standby storage cluster enabled | 1 | 1 GB | |||
Hot standby storage cluster disabled | 0.5 | 2 GB | ||||
Example 1: The storage plan can offset the storage usage of your clusters.
Your Alibaba Cloud account has a storage plan of 50 GB and the following PolarDB clusters:
Cluster name | Edition | Hot standby storage cluster enabled | Billing method (compute nodes) | Storage type | Storage billing method | Cluster storage usage |
A | Cluster Edition | Yes | Subscription | PSL5 | Subscription | 2.76 GB (subscribed amount: 50.00 GB) |
B | Cluster Edition | No | Subscription | PSL5 | Pay-as-you-go | 2.77 GB |
C | Cluster Edition | No | Pay-as-you-go | PSL5 | Pay-as-you-go | 2.81 GB |
D | Cluster Edition (Serverless) | Yes | Serverless | PSL5 | Pay-as-you-go | 45.07 GB |
E | Standard Edition | No | Subscription | PL1 ESSD | Subscription | 2.38 GB (subscribed amount: 100.00 GB) |
50 50-GB storage plan automatically offsets the storage usage of the clusters:
Cluster A and Cluster E use the subscription.storage billing method. The storage plan does not offset the storage usage of the two clusters.
Cluster B has a cluster storage usage of 2.77 GB. An offset ratio of 0.5 is applied to the storage usage. As a result, 1.385 GB (calculated as 2.77 GB × 0.5) of the storage plan is used to offset the storage usage of the cluster. Then, the storage plan has a remaining capacity of 48.615 GB (calculated as 50 GB - 1.385 GB).
Cluster C has a cluster storage usage of 2.81 GB. An offset ratio of 0.5 is applied to the storage usage. As a result, 1.405 GB (calculated as 2.81 GB × 0.5) of the storage plan is used to offset the storage usage of the cluster. Then, the storage plan has a remaining capacity of 47.21 GB (calculated as 48.615 GB - 1.405 GB).
Cluster D has a cluster storage usage of 45.07 GB. An offset ratio of 1 is applied to the storage usage. As a result, 45.07 GB (calculated as 45.07 GB × 1) of the storage plan is used to offset the storage usage of the cluster. Then, the storage plan has a remaining capacity of 2.14 GB (calculated as 47.21 GB - 45.07 GB).
To sum up, a total of 47.86 GB (calculated as 1.385 GB + 1.405 GB + 45.07 GB) of the storage plan is used to offset the storage usage of the clusters. The storage plan has a remaining capacity of 2.14 GB (calculated as 50 GB - 47.86 GB).
This example describes only how a storage plan offsets the cluster storage usage of the PolarDB clusters. Other types of storage usage, such as the storage usage of level-1 backups/data backups, level-2 backups, log backups, and cold data archiving, are not included in this example.
Example 2: The capacity of a storage plan is insufficient to offset the storage usage of your clusters.
Your Alibaba Cloud account has a storage plan of 50 GB and the following PolarDB clusters:
Cluster Name | Edition | Hot standby storage cluster enabled | Billing method (compute nodes) | Storage type | Storage billing method | Cluster storage usage |
A | Cluster Edition | Yes | Subscription | PSL5 | Subscription | 2.76 GB (subscribed amount: 50.00 GB) |
B | Cluster Edition | No | Subscription | PSL5 | Pay-as-you-go | 2.77 GB |
C | Cluster Edition | No | Pay-as-you-go | PSL5 | Pay-as-you-go | 2.81 GB |
D | Cluster Edition (Serverless) | Yes | Serverless | PSL5 | Pay-as-you-go | 45.07 GB |
E | Standard Edition | No | Subscription | PL1 ESSD | Subscription | 2.38 GB (subscribed amount: 100.00 GB) |
F | Cluster Edition | Yes | Pay-as-you-go | PSL5 | Pay-as-you-go | 3.92 GB |
50 50-GB storage plan automatically offsets the storage usage of the clusters:
Cluster A and Cluster E use the subscription.storage billing method. The storage plan does not offset the storage usage of the two clusters.
Cluster B has a cluster storage usage of 2.77 GB. An offset ratio of 0.5 is applied to the storage usage. As a result, 1.385 GB (calculated as 2.77 GB × 0.5) of the storage plan is used to offset the storage usage of the cluster. Then, the storage plan has a remaining capacity of 48.615 GB (calculated as 50 GB - 1.385 GB).
Cluster C has a cluster storage usage of 2.81 GB. An offset ratio of 0.5 is applied to the storage usage. As a result, 1.405 GB (calculated as 2.81 GB × 0.5) of the storage plan is used to offset the storage usage of the cluster. Then, the storage plan has a remaining capacity of 47.21 GB (calculated as 48.615 GB - 1.405 GB).
Cluster D has a cluster storage usage of 45.07 GB. An offset ratio of 1 is applied to the storage usage. As a result, 45.07 GB (calculated as 45.07 GB × 1) of the storage plan is used to offset the storage usage of the cluster. Then, the storage plan has a remaining capacity of 2.14 GB (calculated as 47.21 GB - 45.07 GB).
Cluster F has a cluster storage usage of 3.92 GB. An offset ratio of 1 is applied to the storage usage. However, the storage plan has a remaining capacity of 2.14 GB. Therefore, only 2.14 GB of the storage plan can be used to offset the storage usage of the cluster. After 2.14 GB of the storage plan is used to offset the storage usage of the cluster, the storage plan has a remaining capacity of 0 GB (calculated as 2.14 GB -2.14 GB). The remaining 1.78 GB (calculated as 3.92 GB - 2.14 GB) storage usage of the cluster is billed based on the pay-as-you-go billing method.
To sum up, a total of 50 GB (calculated as 1.385 GB + 1.405 GB + 45.07 GB + 2.14 GB) of the storage plan is used to offset the storage usage of the clusters. The remaining capacity of the storage plan is 0 GB (calculated as 50 GB - 50 GB).
This example describes only how a storage plan offsets the cluster storage usage of the PolarDB clusters. Other types of storage usage, such as the storage usage of level-1 backups/data backups, level-2 backups, log backups, and cold data archiving, are not included in this example.
More
For more information about storage plans, see Storage plans.