As the number of cloud computing customers increases, ApsaraDB RDS aims to provide cost-effective database services based on existing storage resources. ApsaraDB RDS launches the general Enterprise SSD (ESSD) storage type that uses the next-generation storage architecture. This topic describes the concept, effective date, features, and pricing of the general ESSD storage type.
Feature description
The general ESSD is a new storage type supported by ApsaraDB RDS. General ESSDs are compatible with all features of ESSDs and support the I/O burst, I/O acceleration, and data archiving features.
I/O acceleration
After you enable the I/O acceleration feature, the system expands the size of the buffer pool of your RDS instance. This accelerates caching and improves the read/write performance of the RDS instance. The feature also significantly reduces the impact of the I/O jitter of general ESSDs on the RDS instance and improves the stability of the RDS instance. The feature is suitable if you want to improve the I/O performance of the RDS instance without the need to upgrade instance specifications or modify business code. For more information, see Use the I/O burst feature of general ESSDs.
I/O burst
After you enable the I/O burst feature, the IOPS of general ESSDs is no longer limited by the maximum IOPS. This improves the I/O performance of the RDS instance to handle workload bursts during peak hours. The feature is suitable for scenarios in which I/O loads are heavy and fluctuate. For more information, see Use the I/O burst feature of general ESSDs.
Data archiving
After you enable the data archiving feature, you can store data that is infrequently accessed to an Object Storage Service (OSS) bucket, and the storage costs are reduced by 80% compared to PL1 ESSDs. The feature is suitable if your RDS instance contains infrequently accessed or modified tables. For more information, see Use the data archiving feature of general ESSDs.
Effective date
June 20, 2024
Applicable services
RDS PostgreSQL
If you set the Billing Method parameter to Serverless, the general ESSD storage type is unavailable.
Limits
The storage capacity of a general ESSD ranges from 10 GB to 64,000 GB.
You cannot change the storage type of your RDS instance from general ESSD to a different storage type. However, you can change the storage type from ESSD to general ESSD. For more information, see Manage general ESSDs.
Billing rules
Billing
General ESSD fee = Fee for the storage capacity that your purchase for your RDS instance + I/O burst fee + I/O acceleration fee + Data archiving fee
For more information about the billing details of each feature, see the following topics:
Fee for the storage capacity that you purchase for your RDS instance
You are charged for the storage capacity that you purchase for your RDS instance. The subscription and pay-as-you-go billing methods are supported. The billing rules are the same as those of a PL1 ESSD. For more information, see Billable items.
In the following regions, general ESSDs are more cost-effective than PL1 ESSDs regardless of the billing method, and the unit price of a general ESSD is lower than the unit price of a PL1 ESSD:
China (Hong Kong), Singapore, Malaysia (Kuala Lumpur), Indonesia (Jakarta), Philippines (Manila), Thailand (Bangkok), Japan (Tokyo), South Korea (Seoul), US (Silicon Valley), US (Virginia), Germany (Frankfurt), UK (London), and UAE (Dubai)
NoteThe price difference between a general ESSD and a PL1 ESSD varies based on the billing method.
If you use the pay-as-you-go billing method, a general ESSD can be up to 60% more cost-effective than a PL1 ESSD.
If you use the subscription billing method, a general ESSD can be up to 43% more cost-effective than a PL1 ESSD.
In the following regions, the unit price of a general ESSD is the same as the unit price of a PL1 ESSD:
China (Hangzhou), China (Shanghai), China (Beijing), China (Shenzhen), China (Nantong), China (Qingdao), China (Zhangjiakou), China (Hohhot), China (Ulanqab), China (Heyuan), China (Guangzhou), and China (Chengdu)