This document describes the storage types of TencentDB for SQL Server and their uses cases, including SSD cloud disk, high-performance cloud disk, and high-performance local SSD.
|Storage Type||Description||Applicable Database Architecture||Application Scenario|
|SSD cloud disk||All-flash cloud disk storage type with NVMe SSD as the storage media. It adopts a three-copy distributed storage mechanism to provide low-latency and high-throughput I/O capabilities with a high random IOPS and 99.9999999% data security.||Basic Edition||Application scenarios such as I/O-intensive applications and small and medium relational databases.|
|High-performance cloud disk||Hybrid storage type offered by Tencent Cloud. It provides high-performance storage capabilities close to SSD through the cache mechanism and adopts a three-copy distributed mechanism to ensure the data reliability.||Basic Edition||Small and medium application scenarios that require high data reliability and moderate performance, such as web/app servers, business logic processing, and small and medium websites.|
|High-performance local SSD||High I/O local disk storage type, which has an excellent I/O throughput. A 90-core 720 GB MEM TencentDB for SQL Server instance can sustain up to 4.5 million TPM.||Dual-Server High Availability Edition/Cluster Edition||Business scenarios that have extremely high requirements for storage I/O performance and high-availability architecture at the application layer, such as online games, ecommerce, ERP software services, video live streaming, and media.|
You can select the disk type after selecting the instance model on the TencentDB for SQL Server purchase page.
|Storage Type||I/O Performance||Maximum Disk Capacity (GB)|
|SSD cloud disk||Excellent I/O throughput||3,000|
|High-performance cloud disk||Stable I/O performance||3,000|
|High-performance local SSD||Low I/O latency and higher I/O throughput than cloud disk||6,000|