This topic describes the specifications of standard storage-optimized instances of ApsaraDB for Redis Enhanced Edition (Tair), such as the memory capacity, the number of connections, and the bandwidth.

Terms

Storage-optimized instances
Storage-optimized instances of ApsaraDB for Redis Enhanced Edition (Tair) are developed based on enhanced solid-state disks (ESSDs) and compatible with core data structures and interfaces of open source Redis. These instances can provide large-capacity, low-cost, and persistent database services. Storage-optimized instances reduce costs and improve data reliability. In addition, storage-optimized instances reduce the amount of reserved memory that is required for the forks of native Redis databases. This instance type applies to scenarios that store warm and cold data, and require compatibility with Redis, large capacity, and high access performance. For more information, see Storage-optimized instances.
ESSD
ESSDs of Alibaba Cloud. For more information about the related terms and performance levels of ESSDs, see ESSDs.
ECS
Elastic Compute Service (ECS) is a high-performance, stable, reliable, and scalable IaaS-level service provided by Alibaba Cloud. Storage-optimized instances of ApsaraDB for Redis use g6e, the general-purpose instance family with enhanced performance of ECS. This instance family offloads a large number of virtualization features to dedicated hardware with the use of the third-generation X-Dragon architecture to provide predictable and consistent ultra-high performance and reduce virtualization overheads. This instance family improves storage performance, network performance, and computing stability by an order of magnitude by using fast path acceleration of chips.

For more information about the instance families of ECS, see Instance families.

Instance type

InstanceClass that is used in API operations Specifications System disk Corresponding ECS instance type Maximum number of connections Maximum bandwidth (Mbit/s)
Number of CPU cores Memory (GB) Range of storage capacity (GB) ESSD (GB) ESSD performance level
tair.essd.standard.xlarge 3 16 60~130 40 PL1 ecs.g6e.xlarge 30,000 Maximum burst bandwidth: 0.625
tair.essd.standard.2xlarge 8 32 60~260 40 PL1 ecs.g6e.2xlarge 30,000 Maximum burst bandwidth: 0.625
tair.essd.standard.4xlarge 16 64 60~530 40 PL1 ecs.g6e.4xlarge 30,000 Maximum burst bandwidth: 0.625
tair.essd.standard.8xlarge 32 128 60~1030 40 PL1 ecs.g6e.8xlarge 30,000 Maximum burst bandwidth: 0.625
tair.essd.standard.13xlarge 52 192 60~1540 40 PL1 ecs.g6e.13xlarge 30,000 Maximum burst bandwidth: 0.625