How do I select the specifications of compute nodes in PolarDB for MySQL - PolarDB

The compute nodes of PolarDB for MySQL Cluster Edition and Multi-master Cluster (Database/Table) Edition are classified into two types: General-purpose and Dedicated. This topic describes the differences between the two types of compute nodes.

Compute node types

Compute node type	Description	Use scenario
Dedicated Instance Types	A dedicated cluster occupies all allocated compute resources such as CPUs. The cluster does not share compute resources with other clusters that run on the same server. This improves the reliability and stability of the cluster.	Scenarios in which databases are the key component of business systems that require high reliability, such as finance, e-commerce, public service, and medium- or large-scale Internet services.
General-purpose Instance Types	Idle compute resources such as CPUs are shared among clusters that run on the same server. Resource sharing allows you to deploy a large number of clusters at low costs.	Scenarios in which cost-effectiveness is prioritized.

Specifications and prices of Cluster Edition compute nodes

The following table describes the specifications and prices of General-purpose and Dedicated compute nodes in a PolarDB for MySQL cluster of Cluster Edition.

Note

The prices of a single compute node in a PolarDB for MySQL cluster of Cluster Edition that is deployed in the Chinese mainland are listed. For more information about the pricing of compute nodes in different regions, see Billing rules of pay-as-you-go compute nodes.
Maximum IOPS values are theoretical values. It is not guaranteed that these nominal values can be accomplished under any conditions.
Clusters in a global database network (GDN) do not support specifications of 2 cores and 4 GB of memory or 2 cores and 8 GB of memory.

CPU and memory	Compute node type	Specification						Price per node
CPU and memory	Compute node type	Node instance type	Maximum storage capacity	Maximum number of connections	PSL4 maximum IOPS	PSL5 maximum IOPS	I/O bandwidth	Pay-as-you-go	Subscription
2 cores, 4 GB memory	Dedicated Instance Types	N/A
2 cores, 4 GB memory	General-purpose Instance Types	polar.mysql.g2.medium	100 TB	1,800	4,000	8,000	1 Gbps	USD 0.081/hour	USD 39/month
2 cores, 8 GB memory	Dedicated Instance Types	polar.mysql.x4.medium	100 TB	6,000	8,000	16,000	1 Gbps	USD 0.091/hour	USD 44/month
2 cores, 8 GB memory	General-purpose Instance Types	polar.mysql.g4.medium	100 TB	2,000	8,000	16,000	1 Gbps	USD 0.091/hour	USD 44/month
2 cores, 16 GB memory	Dedicated Instance Types	polar.mysql.x8.medium	100 TB	8,000	18,000	36,000	2 Gbps	USD 0.266/hour	USD 128/month
2 cores, 16 GB memory	General-purpose Instance Types	N/A
4 cores, 8 GB memory	Dedicated Instance Types	N/A
4 cores, 8 GB memory	General-purpose Instance Types	polar.mysql.g2.large	100 TB	3,000	15,000	30,000	2 Gbps	USD 0.154/hour	USD 74/month
4 cores, 16 GB memory	Dedicated Instance Types	polar.mysql.x4.large	100 TB	8,000	32,000	64,000	4 Gbps	USD 0.323/hour	USD 155/month
4 cores, 16 GB memory	General-purpose Instance Types	polar.mysql.g4.large	100 TB	6,000	21,000	42,000	2 Gbps	USD 0.275/hour	USD 132/month
4 cores, 32 GB memory	Dedicated Instance Types	polar.mysql.x8.large	100 TB	8,000	36,000	72,000	4 Gbps	USD 1.525/hour	USD 252/month
4 cores, 32 GB memory	General-purpose Instance Types	N/A
8 cores, 16 GB memory	Dedicated Instance Types	N/A
8 cores, 16 GB memory	General-purpose Instance Types	polar.mysql.g2.xlarge	100 TB	6,000	18,000	36,000	2 Gbps	USD 0.339/hour	USD 163/month
8 cores, 32 GB memory	Dedicated Instance Types	polar.mysql.x4.xlarge	100 TB	10,000	48,000	96,000	8 Gbps	USD 0.646/hour	USD 310/month
8 cores, 32 GB memory	General-purpose Instance Types	polar.mysql.g4.xlarge	100 TB	10,000	27,000	54,000	4 Gbps	USD 0.533/hour	USD 256/month
8 cores, 64 GB memory	Dedicated Instance Types	polar.mysql.x8.xlarge	100 TB	16,000	54,000	108,000	10 Gbps	USD 1.033/hour	USD 496/month
8 cores, 64 GB memory	General-purpose Instance Types	N/A
16 cores and 64 GB	Dedicated Instance Types	polar.mysql.x4.2xlarge	100 TB	32,000	96,000	192,000	16 Gbps	USD 1.290/hour	USD 619/month
16 cores and 64 GB	General-purpose Instance Types	polar.mysql.g4.2xlarge	100 TB	16,000	31,500	63,000	4 Gbps	USD 1.049/hour	USD 504/month
16 cores, 96 GB memory	Dedicated Instance Types	N/A
16 cores, 96 GB memory	General-purpose Instance Types	polar.mysql.g6.2xlarge	100 TB	16,000	31,500	63,000	8 Gbps	USD 1.303/hour	USD 635/month
16 cores, 128 GB memory	Dedicated Instance Types	polar.mysql.x8.2xlarge	100 TB	32,000	96,000	192,000	16 Gbps	USD 2.064/hour	USD 991/month
16 cores, 128 GB memory	General-purpose Instance Types	polar.mysql.g8.2xlarge	100 TB	16,000	31,500	63,000	8 Gbps	USD 1.676/hour	USD 1,592/month
32 cores, 128 GB memory	Dedicated Instance Types	polar.mysql.x4.4xlarge	100 TB	64,000	144,000	288,000	10 Gbps	USD 2.580/hour	USD 1,238/month
32 cores, 128 GB memory	General-purpose Instance Types	polar.mysql.g4.4xlarge	100 TB	32,000	42,000	84,000	8 Gbps	USD 2.098/hour	USD 1,008/month
32 cores, 256 GB memory	Dedicated Instance Types	polar.mysql.x8.4xlarge	300 TB	64,000	144,000	288,000	24 Gbps	USD 4.128/hour	USD 1,982/month
32 cores, 256 GB memory	General-purpose Instance Types	N/A
64 cores, 512 GB memory	Dedicated Instance Types	polar.mysql.x8.8xlarge	500 TB	64,000	144,000	288,000	24 Gbps	USD 8.256/hour	USD 3,963/month
64 cores, 512 GB memory	General-purpose Instance Types	N/A
88 cores, 710 GB memory	Dedicated Instance Types	polar.mysql.x8.12xlarge	500 TB	100,000	192,000	384,000	32 Gbps	USD 11.351/hour	USD 5,449/month
88 cores, 710 GB memory	General-purpose Instance Types	N/A

Specifications and prices of Multi-master Cluster (Database/Table) Edition compute nodes

The following table describes the specifications and prices of general-purpose and dedicated compute nodes in a PolarDB for MySQL cluster of Multi-master Cluster (Database/Table) Edition.

Note

The prices of a single compute node in a PolarDB for MySQL cluster of Multi-master Cluster (Database/Table) Edition that is deployed in the Chinese mainland are listed. For more information about the pricing of compute nodes in different regions, see Billing rules of pay-as-you-go compute nodes.
Maximum IOPS values are theoretical values. It is not guaranteed that these nominal values can be accomplished under any conditions.

CPU and memory	Compute node type	Specification						Price per node
CPU and memory	Compute node type	Node instance type	Maximum storage capacity	Maximum number of connections	PSL4 maximum IOPS	PSL5 maximum IOPS	I/O bandwidth	Pay-as-you-go	Subscription
8 cores, 16 GB memory	Dedicated Instance Types	N/A
8 cores, 16 GB memory	General-purpose Instance Types	polar.mysql.mmg2.xlarge	100 TB	6,000	18,000	36,000	2 Gbps	USD 0.339/hour	USD 163/month
8 cores, 32 GB memory	Dedicated Instance Types	polar.mysql.mmx4.xlarge	100 TB	10,000	48,000	96,000	8 Gbps	USD 0.646/hour	USD 310/month
8 cores, 32 GB memory	General-purpose Instance Types	polar.mysql.mmg4.xlarge	100 TB	10,000	27,000	54,000	4 Gbps	USD 0.533/hour	USD 256/month
8 cores, 64 GB memory	Dedicated Instance Types	polar.mysql.mmx8.xlarge	100 TB	16,000	54,000	108,000	10 Gbps	USD 1.033/hour	USD 496/month
8 cores, 64 GB memory	General-purpose Instance Types	N/A
16 cores and 64 GB	Dedicated Instance Types	polar.mysql.mmx4.2xlarge	100 TB	32,000	96,000	192,000	16 Gbps	USD 1.290/hour	USD 619/month
16 cores and 64 GB	General-purpose Instance Types	polar.mysql.mmg4.2xlarge	100 TB	16,000	31,500	63,000	4 Gbps	USD 1.049/hour	USD 504/month
16 cores, 96 GB memory	Dedicated Instance Types	N/A
16 cores, 96 GB memory	General-purpose Instance Types	polar.mysql.mmg6.2xlarge	100 TB	16,000	31,500	63,000	8 Gbps	USD 1.303/hour	USD 635/month
16 cores, 128 GB memory	Dedicated Instance Types	polar.mysql.mmx8.2xlarge	100 TB	32,000	96,000	192,000	16 Gbps	USD 2.064/hour	USD 991/month
16 cores, 128 GB memory	General-purpose Instance Types	polar.mysql.mmg8.2xlarge	100 TB	16,000	31,500	63,000	8 Gbps	USD 1.676/hour	USD 796/month
32 cores, 128 GB memory	Dedicated Instance Types	polar.mysql.mmx4.4xlarge	100 TB	64,000	144,000	288,000	10 Gbps	USD 2.580/hour	USD 1,238/month
32 cores, 128 GB memory	General-purpose Instance Types	polar.mysql.mmg4.4xlarge	100 TB	32,000	63,000	126,000	8 Gbps	USD 2.098/hour	USD 1,008/month
32 cores, 256 GB memory	Dedicated Instance Types	polar.mysql.mmx8.4xlarge	300 TB	64,000	144,000	288,000	24 Gbps	USD 4.128/hour	USD 1,982/month
32 cores, 256 GB memory	General-purpose Instance Types	N/A
64 cores, 512 GB memory	Dedicated Instance Types	polar.mysql.mmx8.8xlarge	500 TB	64,000	144,000	288,000	24 Gbps	USD 8.256/hour	USD 3,963/month
64 cores, 512 GB memory	General-purpose Instance Types	N/A
88 cores, 710 GB memory	Dedicated Instance Types	polar.mysql.mmx8.12xlarge	500 TB	100,000	192,000	384,000	32 Gbps	USD 11.351/hour	USD 5,449/month
88 cores, 710 GB memory	General-purpose Instance Types	N/A