This topic describes the supported editions of Message Queue for Apache Kafka instances to help you select a suitable instance edition.
The following table describes each instance edition of Message Queue for Apache Kafka.
|Item||Standard Edition (High Write)||Professional Edition (High Write)||Professional Edition (High Read)|
|Versions||Versions 0.10.x to 2.x are supported.||Versions 0.10.x to 2.x are supported.|
|Ratio of the maximum read traffic to the maximum write traffic||1:1||1:1||5:1|
|Instance type||Virtual instance whose specific resources are shared||Dedicated instance|
|Message retention period||Up to seven days||Customizable|
|Disaster recovery||Single-zone deployment||Multi-zone deployment|
|Performance optimization||Not supported||Customizable|
|Cross-region message routing||Not supported||Not supported|
|Access control list (ACL)||Not supported||Supported|
|SSL-based message encryption in virtual private clouds (VPCs)||Not supported||Supported|
|Cross-zone deployment||Not supported||Supported|
|Message downloads||Not supported||Supported|
|Resource sharing||Specific resources such as disks are shared.
||All resources are exclusive.|
|Disk capacity||If you purchase a disk of 300 GB, the actual storage space that you can use to store your business data is 100 GB. The remaining 200 GB is used to store backups.||If you purchase a disk of 300 GB, the actual storage space that you can use to store your business data is 300 GB. Alibaba Cloud provides additional 600 GB of storage space free of charge to allow you to store backups.|