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PolarDB:Instance types

Last Updated:Mar 28, 2026

PolarDB-X offers two editions — Enterprise Edition and Standard Edition — each with primary and read-only instance options. Use this page to select the right instance family and estimate costs before you create a cluster.

Choose an edition

EditionBest for
Enterprise EditionLarge-scale distributed workloads that require custom compute and data node configurations, high IOPS, and up to 6 TB storage per node
Standard EditionStandard workloads with a wide range of node sizes, from entry-level to high-memory configurations

Choose an instance family

Both editions offer two instance families: General-purpose and Dedicated.

All IOPS and maximum connections values in the tables below are per-node limits, not cluster totals.

Enterprise Edition

On a PolarDB-X Enterprise Edition primary instance, you can independently customize the number and specifications of compute nodes and data nodes.

Instance family

CPU and memory per node

Maximum IOPS per node

Maximum connections per node

Storage space per node

Subscription (USD/month)

Pay-as-you-go (USD/hour)

Compute node

Data node

Compute node

Data node

General-purpose

2 cores, 8 GB memory

6000

20000

3 TB

50.14

117.00

0.234

0.545

4 cores, 16 GB memory

12000

20000

3 TB

122.21

285.15

0.463

1.081

8 cores, 32 GB memory

25000

20000

3 TB

261.76

610.76

0.992

2.315

16 cores, 64 GB memory

40000

20000

3 TB

577.00

1346.33

2.186

5.101

Dedicated

4 cores, 32 GB memory

20000

20000

3 TB

207.75

484.76

0.795

1.854

8 cores, 64 GB memory

40000

20000

3 TB

444.98

1038.30

1.702

3.972

16 cores, 128 GB memory

60000

20000

3 TB

980.90

2288.77

3.752

8.756

32 cores, 128 GB memory

70000

20000

3 TB

1145.71

2673.32

4.340

10.127

32 cores, 256 GB memory

80000

20000

3 TB

1947.71

4544.65

7.451

17.386

60 cores, 470 GB memory

140000

20000

6 TB

3603.26

8407.60

13.785

32.165

90 cores, 720 GB memory

140000

20000

6 TB

5404.88

12611.39

20.678

48.248

Primary instance

Instance family

CPU and memory per node

Subscription price of a compute node (USD/month)

Pay-as-you-go price of a compute node (USD/hour)

Chinese mainland

Asia Pacific, Europe, and Americas

Chinese mainland

Asia Pacific, Europe, and Americas

General-purpose

4 cores, 16 GB memory

335.1125

402.135

0.7

0.84

8 cores, 32 GB memory

717.771875

861.32625

1.496875

1.79625

16 cores, 64 GB memory

1582.221875

1898.6663

3.2984375

3.958125

Dedicated

32 cores, 128 GB memory

3141.70625

3770.0475

6.546875

7.85625

General-purpose

CPU and memory per nodeMaximum IOPS per nodeMaximum connections per nodeStorage space per nodeSubscription — compute node (USD/month)Subscription — data node (USD/month)Pay-as-you-go — compute node (USD/hour)Pay-as-you-go — data node (USD/hour)
2 cores, 8 GB memory6,00020,0003 TB50.14117.000.2340.545
4 cores, 16 GB memory12,00020,0003 TB122.21285.150.4631.081
8 cores, 32 GB memory25,00020,0003 TB261.76610.760.9922.315
16 cores, 64 GB memory40,00020,0003 TB577.001,346.332.1865.101

Dedicated

CPU and memory per nodeMaximum IOPS per nodeMaximum connections per nodeStorage space per nodeSubscription — compute node (USD/month)Subscription — data node (USD/month)Pay-as-you-go — compute node (USD/hour)Pay-as-you-go — data node (USD/hour)
4 cores, 32 GB memory20,00020,0003 TB207.75484.760.7951.854
8 cores, 64 GB memory40,00020,0003 TB444.981,038.301.7023.972
16 cores, 128 GB memory60,00020,0003 TB980.902,288.773.7528.756
32 cores, 128 GB memory70,00020,0003 TB1,145.712,673.324.34010.127
32 cores, 256 GB memory80,00020,0003 TB1,947.714,544.657.45117.386
60 cores, 470 GB memory140,00020,0006 TB3,603.268,407.6013.78532.165
90 cores, 720 GB memory140,00020,0006 TB5,404.8812,611.3920.67848.248

Read-only instance

Prices shown are for compute nodes only.

General-purpose

CPU and memory per nodeSubscription — Chinese mainland (USD/month)Subscription — Asia Pacific, Europe, and Americas (USD/month)Pay-as-you-go — Chinese mainland (USD/hour)Pay-as-you-go — Asia Pacific, Europe, and Americas (USD/hour)
4 cores, 16 GB memory335.1125402.1350.70.84
8 cores, 32 GB memory717.771875861.326251.4968751.79625
16 cores, 64 GB memory1,582.2218751,898.66633.29843753.958125

Dedicated

CPU and memory per nodeSubscription — Chinese mainland (USD/month)Subscription — Asia Pacific, Europe, and Americas (USD/month)Pay-as-you-go — Chinese mainland (USD/hour)Pay-as-you-go — Asia Pacific, Europe, and Americas (USD/hour)
32 cores, 128 GB memory3,141.706253,770.04756.5468757.85625

Standard Edition

Primary instance

Instance family

CPU and memory per node

Node type

Maximum IOPS

Subscription (USD/month)

Pay-as-you-go (USD/hour)

Chinese mainland

Asia Pacific, Europe, and Americas

Chinese mainland

Asia Pacific, Europe, and Americas

General-purpose

1 core, 8 GB memory

mysql.n8.small.25

4000

7.70

9.24

0.016

0.019

2 cores, 4 GB memory

mysql.n2.medium.25

4000

50.40

60.48

0.105

0.126

2 cores, 8 GB memory

mysql.n4.medium.25

6000

65.52

78.62

0.137

0.164

2 cores, 16 GB memory

mysql.n8.medium.25

7000

80.64

96.77

0.168

0.202

4 cores, 8 GB memory

mysql.n2.large.25

8000

97.44

116.93

0.203

0.244

4 cores, 16 GB memory

mysql.n4.large.25

12000

124.46

149.35

0.259

0.311

4 cores, 32 GB memory

mysql.n8.large.25

15000

152.88

183.46

0.319

0.382

8 cores, 16 GB memory

mysql.n2.xlarge.25

20000

183.96

220.75

0.383

0.460

8 cores, 32 GB memory

mysql.n4.xlarge.25

25000

252.00

302.40

0.525

0.630

8 cores, 64 GB memory

mysql.n8.xlarge.25

30000

336.00

403.20

0.700

0.840

16 cores, 32 GB memory

mysql.n2.2xlarge.25

35000

436.80

524.16

0.910

1.092

16 cores, 64 GB memory

mysql.n4.2xlarge.25

40000

567.84

681.41

1.183

1.420

16 cores, 128 GB memory

mysql.n8.2xlarge.25

40000

738.08

885.70

1.538

1.845

Dedicated

2 cores, 4 GB memory

mysql.x2.medium.25

5000

85.71

102.86

0.180

0.220

2 cores, 8 GB memory

mysql.x4.medium.25

7000

111.34

133.61

0.230

0.280

2 cores, 16 GB memory

mysql.x8.medium.25

8000

166.32

199.58

0.347

0.416

4 cores, 8 GB memory

mysql.x2.large.25

10000

165.69

198.82

0.350

0.420

4 cores, 16 GB memory

mysql.x4.large.25

12000

211.68

254.02

0.441

0.529

4 cores, 32 GB memory

mysql.x8.large.25

20000

275.52

330.62

0.574

0.689

8 cores, 16 GB memory

mysql.x2.xlarge.25

25000

312.75

375.29

0.650

0.780

8 cores, 32 GB memory

mysql.x4.xlarge.25

30000

413.28

495.94

0.861

1.033

8 cores, 64 GB memory

mysql.x8.xlarge.25

40000

537.60

645.12

1.120

1.344

16 cores, 32 GB memory

mysql.x2.2xlarge.25

45000

655.46

786.55

1.370

1.640

16 cores, 64 GB memory

mysql.x4.2xlarge.25

50000

806.40

967.68

1.680

2.016

16 cores, 128 GB memory

mysql.x8.2xlarge.25

60000

1,048.32

1,257.98

2.184

2.621

32 cores, 128 GB memory

mysql.x4.4xlarge.25

70000

1,572.48

1,886.98

3.276

3.932

32 cores, 256 GB memory

mysql.x8.4xlarge.25

80000

2,044.14

2,452.97

4.259

5.111

64 cores, 256 GB memory

mysql.x4.8xlarge.25

120000

3,066.28

3,679.54

6.389

7.666

64 cores, 512 GB memory

mysql.x8.8xlarge.25

140000

3,986.22

4,783.46

8.305

9.967

90 cores, 720 GB memory

mysql.st.12xlarge.25

140000

6,132.00

7,358.40

12.776

15.332

Read-only instance

Instance family

CPU and memory per node

Node type

Maximum IOPS

Subscription (USD/month)

Pay-as-you-go (USD/hour)

Chinese mainland

Asia Pacific, Europe, and Americas

Chinese mainland

Asia Pacific, Europe, and Americas

General-purpose

2 cores, 4 GB memory

mysql.n2.medium.25

4000

40

48

0.084

0.100

2 cores, 8 GB memory

mysql.n4.medium.25

6000

52

62

0.109

0.131

2 cores, 16 GB memory

mysql.n8.medium.25

7000

64

77

0.134

0.161

4 cores, 8 GB memory

mysql.n2.large.25

8000

77

93

0.162

0.195

4 cores, 16 GB memory

mysql.n4.large.25

12000

99

119

0.207

0.249

4 cores, 32 GB memory

mysql.n8.large.25

15000

122

146

0.255

0.306

8 cores, 16 GB memory

mysql.n2.xlarge.25

20000

147

176

0.307

0.368

8 cores, 32 GB memory

mysql.n4.xlarge.25

25000

201

241

0.420

0.504

8 cores, 64 GB memory

mysql.n8.xlarge.25

30000

268

322

0.560

0.672

16 cores, 32 GB memory

mysql.n2.2xlarge.25

35000

349

419

0.728

0.874

16 cores, 64 GB memory

mysql.n4.2xlarge.25

40000

454

545

0.947

1.136

16 cores, 128 GB memory

mysql.n8.2xlarge.25

40000

590

708

1.230

1.476

Dedicated

2 cores, 4 GB memory

mysql.x2.medium.25

5000

68

82

0.144

0.176

2 cores, 8 GB memory

mysql.x4.medium.25

7000

89

106

0.184

0.224

2 cores, 16 GB memory

mysql.x8.medium.25

8000

133

159

0.277

0.333

4 cores, 8 GB memory

mysql.x2.large.25

10000

132

159

0.280

0.336

4 cores, 16 GB memory

mysql.x4.large.25

12000

169

203

0.353

0.423

4 cores, 32 GB memory

mysql.x8.large.25

20000

220

264

0.459

0.551

8 cores, 16 GB memory

mysql.x2.xlarge.25

25000

250

300

0.520

0.624

8 cores, 32 GB memory

mysql.x4.xlarge.25

30000

330

396

0.689

0.827

8 cores, 64 GB memory

mysql.x8.xlarge.25

40000

430

516

0.896

1.075

16 cores, 32 GB memory

mysql.x2.2xlarge.25

45000

524

629

1.096

1.312

16 cores, 64 GB memory

mysql.x4.2xlarge.25

50000

645

774

1.344

1.613

16 cores, 128 GB memory

mysql.x8.2xlarge.25

60000

838

1,006

1.747

2.097

32 cores, 128 GB memory

mysql.x4.4xlarge.25

70000

1,257

1,509

2.621

3.145

32 cores, 256 GB memory

mysql.x8.4xlarge.25

80000

1,635

1,962

3.407

4.089

64 cores, 256 GB memory

mysql.x4.8xlarge.25

120000

2,453

2,943

5.111

6.133

64 cores, 512 GB memory

mysql.x8.8xlarge.25

140000

3,188

3,826

6.644

7.973

90 cores, 720 GB memory

mysql.st.12xlarge.25

140000

4,905

5,886

10.221

12.265

Standard Edition

Primary instance

General-purpose

CPU and memory per nodeNode typeMaximum IOPSSubscription — Chinese mainland (USD/month)Subscription — Asia Pacific, Europe, and Americas (USD/month)Pay-as-you-go — Chinese mainland (USD/hour)Pay-as-you-go — Asia Pacific, Europe, and Americas (USD/hour)
1 core, 8 GB memorymysql.n8.small.254,0007.709.240.0160.019
2 cores, 4 GB memorymysql.n2.medium.254,00050.4060.480.1050.126
2 cores, 8 GB memorymysql.n4.medium.256,00065.5278.620.1370.164
2 cores, 16 GB memorymysql.n8.medium.257,00080.6496.770.1680.202
4 cores, 8 GB memorymysql.n2.large.258,00097.44116.930.2030.244
4 cores, 16 GB memorymysql.n4.large.2512,000124.46149.350.2590.311
4 cores, 32 GB memorymysql.n8.large.2515,000152.88183.460.3190.382
8 cores, 16 GB memorymysql.n2.xlarge.2520,000183.96220.750.3830.460
8 cores, 32 GB memorymysql.n4.xlarge.2525,000252.00302.400.5250.630
8 cores, 64 GB memorymysql.n8.xlarge.2530,000336.00403.200.7000.840
16 cores, 32 GB memorymysql.n2.2xlarge.2535,000436.80524.160.9101.092
16 cores, 64 GB memorymysql.n4.2xlarge.2540,000567.84681.411.1831.420
16 cores, 128 GB memorymysql.n8.2xlarge.2540,000738.08885.701.5381.845

Dedicated

CPU and memory per nodeNode typeMaximum IOPSSubscription — Chinese mainland (USD/month)Subscription — Asia Pacific, Europe, and Americas (USD/month)Pay-as-you-go — Chinese mainland (USD/hour)Pay-as-you-go — Asia Pacific, Europe, and Americas (USD/hour)
2 cores, 4 GB memorymysql.x2.medium.255,00085.71102.860.1800.220
2 cores, 8 GB memorymysql.x4.medium.257,000111.34133.610.2300.280
2 cores, 16 GB memorymysql.x8.medium.258,000166.32199.580.3470.416
4 cores, 8 GB memorymysql.x2.large.2510,000165.69198.820.3500.420
4 cores, 16 GB memorymysql.x4.large.2512,000211.68254.020.4410.529
4 cores, 32 GB memorymysql.x8.large.2520,000275.52330.620.5740.689
8 cores, 16 GB memorymysql.x2.xlarge.2525,000312.75375.290.6500.780
8 cores, 32 GB memorymysql.x4.xlarge.2530,000413.28495.940.8611.033
8 cores, 64 GB memorymysql.x8.xlarge.2540,000537.60645.121.1201.344
16 cores, 32 GB memorymysql.x2.2xlarge.2545,000655.46786.551.3701.640
16 cores, 64 GB memorymysql.x4.2xlarge.2550,000806.40967.681.6802.016
16 cores, 128 GB memorymysql.x8.2xlarge.2560,0001,048.321,257.982.1842.621
32 cores, 128 GB memorymysql.x4.4xlarge.2570,0001,572.481,886.983.2763.932
32 cores, 256 GB memorymysql.x8.4xlarge.2580,0002,044.142,452.974.2595.111
64 cores, 256 GB memorymysql.x4.8xlarge.25120,0003,066.283,679.546.3897.666
64 cores, 512 GB memorymysql.x8.8xlarge.25140,0003,986.224,783.468.3059.967
90 cores, 720 GB memorymysql.st.12xlarge.25140,0006,132.007,358.4012.77615.332

Read-only instance

General-purpose

CPU and memory per nodeNode typeMaximum IOPSSubscription — Chinese mainland (USD/month)Subscription — Asia Pacific, Europe, and Americas (USD/month)Pay-as-you-go — Chinese mainland (USD/hour)Pay-as-you-go — Asia Pacific, Europe, and Americas (USD/hour)
2 cores, 4 GB memorymysql.n2.medium.254,00040480.0840.100
2 cores, 8 GB memorymysql.n4.medium.256,00052620.1090.131
2 cores, 16 GB memorymysql.n8.medium.257,00064770.1340.161
4 cores, 8 GB memorymysql.n2.large.258,00077930.1620.195
4 cores, 16 GB memorymysql.n4.large.2512,000991190.2070.249
4 cores, 32 GB memorymysql.n8.large.2515,0001221460.2550.306
8 cores, 16 GB memorymysql.n2.xlarge.2520,0001471760.3070.368
8 cores, 32 GB memorymysql.n4.xlarge.2525,0002012410.4200.504
8 cores, 64 GB memorymysql.n8.xlarge.2530,0002683220.5600.672
16 cores, 32 GB memorymysql.n2.2xlarge.2535,0003494190.7280.874
16 cores, 64 GB memorymysql.n4.2xlarge.2540,0004545450.9471.136
16 cores, 128 GB memorymysql.n8.2xlarge.2540,0005907081.2301.476

Dedicated

CPU and memory per nodeNode typeMaximum IOPSSubscription — Chinese mainland (USD/month)Subscription — Asia Pacific, Europe, and Americas (USD/month)Pay-as-you-go — Chinese mainland (USD/hour)Pay-as-you-go — Asia Pacific, Europe, and Americas (USD/hour)
2 cores, 4 GB memorymysql.x2.medium.255,00068820.1440.176
2 cores, 8 GB memorymysql.x4.medium.257,000891060.1840.224
2 cores, 16 GB memorymysql.x8.medium.258,0001331590.2770.333
4 cores, 8 GB memorymysql.x2.large.2510,0001321590.2800.336
4 cores, 16 GB memorymysql.x4.large.2512,0001692030.3530.423
4 cores, 32 GB memorymysql.x8.large.2520,0002202640.4590.551
8 cores, 16 GB memorymysql.x2.xlarge.2525,0002503000.5200.624
8 cores, 32 GB memorymysql.x4.xlarge.2530,0003303960.6890.827
8 cores, 64 GB memorymysql.x8.xlarge.2540,0004305160.8961.075
16 cores, 32 GB memorymysql.x2.2xlarge.2545,0005246291.0961.312
16 cores, 64 GB memorymysql.x4.2xlarge.2550,0006457741.3441.613
16 cores, 128 GB memorymysql.x8.2xlarge.2560,0008381,0061.7472.097
32 cores, 128 GB memorymysql.x4.4xlarge.2570,0001,2571,5092.6213.145
32 cores, 256 GB memorymysql.x8.4xlarge.2580,0001,6351,9623.4074.089
64 cores, 256 GB memorymysql.x4.8xlarge.25120,0002,4532,9435.1116.133
64 cores, 512 GB memorymysql.x8.8xlarge.25140,0003,1883,8266.6447.973
90 cores, 720 GB memorymysql.st.12xlarge.25140,0004,9055,88610.22112.265