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# Amazon OpenSearch 服务中支持的实例类型
<a name="supported-instance-types"></a>

Amazon OpenSearch 服务支持以下实例类型。并非所有区域都支持所有实例类型。有关可用性的详细信息，请参阅 [Amazon OpenSearch 服务定价](https://aws.amazon.com/opensearch-service/pricing/)。

有关哪种实例类型适合您的使用案例的信息，请参阅[调整亚马逊 OpenSearch 服务域名的大小](sizing-domains.md)、[EBS 卷大小配额](limits.md#ebsresource)和[网络配额](limits.md#network-limits)。

 请注意，以下实例系列不支持 VPC 加密控制：T2、T3、R3、I3、C4、M4、R4、C5、M5、R5、R5、C6g、m6g、m6g、r6g 和 r6gD。VPC Encryption Controls 是一项安全与合规功能，可为您提供集中式权威控制来监控流量加密状态，帮助您识别允许明文通信的资源，并最终为您提供在您所在区域内和跨区域传输时强制加密的机制。 VPCs 要了解更多详情，请访问 [VPC 加密控制文档。](https://docs.aws.amazon.com/vpc/latest/userguide/vpc-encryption-controls.html)

## 当前一代实例类型
<a name="latest-gen"></a>

为了获得最佳性能，我们建议您在创建新的 OpenSearch 服务域时使用以下实例类型。


| 实例类型 | 实例 | 限制 | 
| --- | --- | --- | 
| i4i | i4i.large.search i4i.xlarge.search i4i.2xlarge.search i4i.4xlarge.search i4i.8xlarge.search i4i.12xlarge.search i4i.16xlarge.search i4i.24xlarge.search i4i.32xlarge.search  | i4i 实例类型需要 Elasticsearch 5.1 或更高版本或任何版本 OpenSearch，并且不支持 EBS 卷存储。 | 
| i7i | i7i.large.search i7i.xlarge.search i7i.2xlarge.search i7i.4xlarge.search i7i.8xlarge.search i7i.12xlarge.search i7i.16xlarge.search  | i7i 实例类型需要 Elasticsearch 5.1 或更高版本或任何版本 OpenSearch，并且不支持 EBS 卷存储。 | 
| i8g | i8g.large.search i8g.xlarge.search i8g.2xlarge.search i8g.4xlarge.search i8g.8xlarge.search i8g.12xlarge.search i8g.16xlarge.search  |  i8g 实例类型需要 Elasticsearch 7.9 或更高版本或任何版本 OpenSearch，并且不支持 EBS 存储卷。  | 
| i8ge | i8ge.large.search i8ge.xlarge.search i8ge.2xlarge.search i8ge.3xlarge.search i8ge.6xlarge.search i8ge.12xlarge.search i8ge.18xlarge.search  |  i8ge 实例类型需要 Elasticsearch 7.9 或更高版本或任何版本 OpenSearch，并且不支持 EBS 存储卷。  | 
| Graviton3 | c7g.large.search c7g.xlarge.search c7g.2xlarge.search c7g.4xlarge.search c7g.8xlarge.search c7g.12xlarge.search c7g.16xlarge.search m7g.medium.search m7g.large.search m7g.xlarge.search m7g.2xlarge.search m7g.4xlarge.search m7g.8xlarge.search m7g.12xlarge.search m7g.16xlarge.search r7g.medium.search r7g.large.search r7g.xlarge.search r7g.2xlarge.search r7g.4xlarge.search r7g.8xlarge.search r7g.12xlarge.search r7g.16xlarge.search r7gd.large.search r7gd.xlarge.search r7gd.2xlarge.search r7gd.4xlarge.search r7gd.8xlarge.search r7gd.12xlarge.search r7gd.16xlarge.search  | Graviton3 仅支持 gp3 存储。Graviton3 实例（c7g、m7g、r7g）支持所有版本以及 Elasticsearch 版本 7.9 和 7.10。 OpenSearch  | 
| OR1 |  `or1.medium.search` `or1.large.search` `or1.xlarge.search` `or1.2xlarge.search` `or1.4xlarge.search` `or1.8xlarge.search` `or1.12xlarge.search` `or1.16xlarge.search`  |  [\[See the AWS documentation website for more details\]](http://docs.aws.amazon.com/zh_cn/opensearch-service/latest/developerguide/supported-instance-types.html)  | 
| OR2 |  `or2.medium.search` `or2.large.search` `or2.xlarge.search` `or2.2xlarge.search` `or2.4xlarge.search` `or2.8xlarge.search ` `or2.12xlarge.search` `or2.16xlarge.search`  |  [\[See the AWS documentation website for more details\]](http://docs.aws.amazon.com/zh_cn/opensearch-service/latest/developerguide/supported-instance-types.html)  | 
| OM2 |  `om2.large.search` `om2.xlarge.search` `om2.2xlarge.search` `om2.4xlarge.search` `om2.8xlarge.search` `om2.12xlarge.search` `om2.16xlarge.search`  |  [\[See the AWS documentation website for more details\]](http://docs.aws.amazon.com/zh_cn/opensearch-service/latest/developerguide/supported-instance-types.html)  | 
| OI2 |  `oi2.large.search` `oi2.xlarge.search` `oi2.2xlarge.search` `oi2.4xlarge.search` `oi2.8xlarge.search` `oi2.12xlarge.search` `oi2.16xlarge.search` `oi2.24xlarge.search` `oi2.32xlarge.search`  |  [\[See the AWS documentation website for more details\]](http://docs.aws.amazon.com/zh_cn/opensearch-service/latest/developerguide/supported-instance-types.html)  | 
| Im4gn |  `im4gn.large.search` `im4gn.xlarge.search` `im4gn.2xlarge.search` `im4gn.4xlarge.search` `im4gn.8xlarge.search` `im4gn.16xlarge.search`  |  [\[See the AWS documentation website for more details\]](http://docs.aws.amazon.com/zh_cn/opensearch-service/latest/developerguide/supported-instance-types.html)  | 
|  T3  | `t3.small.search` `t3.medium.search` |  [\[See the AWS documentation website for more details\]](http://docs.aws.amazon.com/zh_cn/opensearch-service/latest/developerguide/supported-instance-types.html)  | 
| c7i | `c7i.large.search` `c7i.xlarge.search` `c7i.2xlarge.search` `c7i.4xlarge.search` `c7i.8xlarge.search` `c7i.12xlarge.search` `c7i.16xlarge.search` |  [\[See the AWS documentation website for more details\]](http://docs.aws.amazon.com/zh_cn/opensearch-service/latest/developerguide/supported-instance-types.html)  | 
| m7i | `m7i.large.search` `m7i.xlarge.search` `m7i.2xlarge.search` `m7i.4xlarge.search` `m7i.8xlarge.search` `m7i.12xlarge.search` `m7i.16xlarge.search` |  [\[See the AWS documentation website for more details\]](http://docs.aws.amazon.com/zh_cn/opensearch-service/latest/developerguide/supported-instance-types.html)  | 
| r7i | `r7i.large.search` `r7i.xlarge.search` `r7i.2xlarge.search` `r7i.4xlarge.search` `r7i.8xlarge.search` `r7i.12xlarge.search` `r7i.16xlarge.search` |  [\[See the AWS documentation website for more details\]](http://docs.aws.amazon.com/zh_cn/opensearch-service/latest/developerguide/supported-instance-types.html)  | 
| c8g | `c8g.large.search` `c8g.xlarge.search` `c8g.2xlarge.search` `c8g.4xlarge.search` `c8g.8xlarge.search` `c8g.12xlarge.search` `c8g.16xlarge.search` |  [\[See the AWS documentation website for more details\]](http://docs.aws.amazon.com/zh_cn/opensearch-service/latest/developerguide/supported-instance-types.html)  | 
| m8g | `m8g.medium.search` `m8g.large.search` `m8g.xlarge.search` `m8g.2xlarge.search` `m8g.4xlarge.search` `m8g.8xlarge.search` `m8g.12xlarge.search` `m8g.16xlarge.search` |  [\[See the AWS documentation website for more details\]](http://docs.aws.amazon.com/zh_cn/opensearch-service/latest/developerguide/supported-instance-types.html)  | 
| r8g | `r8g.medium.search` `r8g.large.search` `r8g.xlarge.search` `r8g.2xlarge.search` `r8g.4xlarge.search` `r8g.8xlarge.search` `r8g.12xlarge.search` `r8g.16xlarge.search` |  [\[See the AWS documentation website for more details\]](http://docs.aws.amazon.com/zh_cn/opensearch-service/latest/developerguide/supported-instance-types.html)  | 
| r8gd | `r8gd.medium.search` `r8gd.large.search` `r8gd.2xlarge.search` `r8gd.4xlarge.search` `r8gd.8xlarge.search` `r8gd.12xlarge.search` `r8gd.16xlarge.search` |  [\[See the AWS documentation website for more details\]](http://docs.aws.amazon.com/zh_cn/opensearch-service/latest/developerguide/supported-instance-types.html)  | 

## 上一代实例类型
<a name="previous-gen"></a>

OpenSearch Service 为已经围绕这些实例类型优化了应用程序但尚未升级的用户提供上一代实例类型。建议您使用当前一代实例类型以获得最佳性能，但我们会继续支持以下上一代实例类型。


| 实例类型 | 实例 | 限制 | 
| --- | --- | --- | 
|  C4  | `c4.large.search` `c4.xlarge.search` `c4.2xlarge.search` `c4.4xlarge.search` `c4.8xlarge.search` |  | 
| I2 |  `i2.xlarge.search` `i2.2xlarge.search`  |  | 
|  M3  |  `m3.medium.search` `m3.large.search` `m3.xlarge.search` `m3.2xlarge.search`  |  [\[See the AWS documentation website for more details\]](http://docs.aws.amazon.com/zh_cn/opensearch-service/latest/developerguide/supported-instance-types.html)  | 
| M4 |  `m4.large.search` `m4.xlarge.search` `m4.2xlarge.search` `m4.4xlarge.search` `m4.10xlarge.search`  |  | 
|  R3  |  `r3.large.search` `r3.xlarge.search` `r3.2xlarge.search` `r3.4xlarge.search` `r3.8xlarge.search`  | R3 实例类型不支持静态数据加密或精细访问控制。 | 
| R4 |  `r4.large.search` `r4.xlarge.search` `r4.2xlarge.search` `r4.4xlarge.search` `r4.8xlarge.search` `r4.16xlarge.search`  |  | 
| i4g | i4g.large.search i4g.xlarge.search i4g.2xlarge.search i4g.4xlarge.search i4g.8xlarge.search i4g.16xlarge.search  |  i4g 实例类型需要 Elasticsearch 7.9 或更高版本或任何版本 OpenSearch，并且不支持 EBS 存储卷。  | 
| C5 |  `c5.large.search` `c5.xlarge.search` `c5.2xlarge.search` `c5.4xlarge.search` `c5.9xlarge.search` `c5.18xlarge.search`  |  C5 实例类型需要 Elasticsearch 5.1 或更高版本或任何版本。 OpenSearch  | 
| C6g |  `c6g.large.search` `c6g.xlarge.search` `c6g.2xlarge.search` `c6g.4xlarge.search` `c6g.8xlarge.search` `c6g.12xlarge.search`  |  [\[See the AWS documentation website for more details\]](http://docs.aws.amazon.com/zh_cn/opensearch-service/latest/developerguide/supported-instance-types.html)  | 
|  I3  |  `i3.large.search` `i3.xlarge.search` `i3.2xlarge.search` `i3.4xlarge.search` `i3.8xlarge.search` `i3.16xlarge.search`  |   | 
|  M5  |  `m5.large.search` `m5.xlarge.search` `m5.2xlarge.search` `m5.4xlarge.search` `m5.12xlarge.search`  |  M5 实例类型需要 Elasticsearch 5.1 或更高版本或任何版本。 OpenSearch  | 
| M6g |  `m6g.large.search` `m6g.xlarge.search` `m6g.2xlarge.search` `m6g.4xlarge.search` `m6g.8xlarge.search` `m6g.12xlarge.search`  |  [\[See the AWS documentation website for more details\]](http://docs.aws.amazon.com/zh_cn/opensearch-service/latest/developerguide/supported-instance-types.html)  | 
|  R5  |  `r5.large.search` `r5.xlarge.search` `r5.2xlarge.search` `r5.4xlarge.search` `r5.12xlarge.search`  |  R5 实例类型需要 Elasticsearch 5.1 或更高版本或任何版本。 OpenSearch  | 
| R6g |  `r6g.large.search` `r6g.xlarge.search` `r6g.2xlarge.search` `r6g.4xlarge.search` `r6g.8xlarge.search` `r6g.12xlarge.search`  |  [\[See the AWS documentation website for more details\]](http://docs.aws.amazon.com/zh_cn/opensearch-service/latest/developerguide/supported-instance-types.html)  | 
| R6gd | `r6gd.large.search` `r6gd.xlarge.search` `r6gd.2xlarge.search` `r6gd.4xlarge.search` `r6gd.8xlarge.search` `r6gd.12xlarge.search` `r6gd.16xlarge.search` |  [\[See the AWS documentation website for more details\]](http://docs.aws.amazon.com/zh_cn/opensearch-service/latest/developerguide/supported-instance-types.html)  | 
| T2 |  `t2.micro.search` `t2.small.search` `t2.medium.search`  |  [\[See the AWS documentation website for more details\]](http://docs.aws.amazon.com/zh_cn/opensearch-service/latest/developerguide/supported-instance-types.html)  | 

**提示**  
我们经常建议，对于[专用主节点](managedomains-dedicatedmasternodes.md)和数据节点，可以使用不同的实例类型。