# Supported instance types in Amazon OpenSearch Service
<a name="supported-instance-types"></a>

Amazon OpenSearch Service supports the following instance types. Not all Regions support all instance types. For availability details, see [Amazon OpenSearch Service pricing](https://aws.amazon.com/opensearch-service/pricing/).

For information about which instance type is appropriate for your use case, see [Sizing Amazon OpenSearch Service domains](sizing-domains.md), [EBS volume size quotas](limits.md#ebsresource), and [Network quotas](limits.md#network-limits).

 Please note that following instance families do not support VPC Encryption Controls: T2, T3, R3, I3, C4, M4, R4, C5, M5, R5, C6g, M6g, R6g, and R6gd. VPC Encryption Controls is a security and compliance feature that offers you centralized authoritative control to monitor the encryption status of your traffic flows, helps you identify resources that allow cleartext communication, and eventually gives you mechanisms to enforce encryption in transit within and across your VPCs in a region. To learn more details visit [ VPC Encryption Controls documentation.](https://docs.aws.amazon.com/vpc/latest/userguide/vpc-encryption-controls.html) 

## Current generation instance types
<a name="latest-gen"></a>

For the best performance, we recommend that you use the following instance types when you create new OpenSearch Service domains.


| Instance type | Instances | Restrictions | 
| --- | --- | --- | 
| i4i | i4i.large.search<br />i4i.xlarge.search<br />i4i.2xlarge.search<br />i4i.4xlarge.search<br />i4i.8xlarge.search<br />i4i.12xlarge.search<br />i4i.16xlarge.search<br />i4i.24xlarge.search<br />i4i.32xlarge.search | The i4i instance types require Elasticsearch 5.1 or later or any version of OpenSearch, and do not support EBS volume storage. | 
| i7i | i7i.large.search<br />i7i.xlarge.search<br />i7i.2xlarge.search<br />i7i.4xlarge.search<br />i7i.8xlarge.search<br />i7i.12xlarge.search<br />i7i.16xlarge.search | The i7i instance types require Elasticsearch 5.1 or later or any version of OpenSearch, and do not support EBS volume storage. | 
| i8g | i8g.large.search<br />i8g.xlarge.search<br />i8g.2xlarge.search<br />i8g.4xlarge.search<br />i8g.8xlarge.search<br />i8g.12xlarge.search<br />i8g.16xlarge.search | The i8g instance types require Elasticsearch 7.9 or later or any version of OpenSearch, and do not support EBS storage volumes. | 
| i8ge | i8ge.large.search<br />i8ge.xlarge.search<br />i8ge.2xlarge.search<br />i8ge.3xlarge.search<br />i8ge.6xlarge.search<br />i8ge.12xlarge.search<br />i8ge.18xlarge.search | The i8ge instance types require Elasticsearch 7.9 or later or any version of OpenSearch, and do not support EBS storage volumes. | 
| Graviton3 | c7g.large.search<br />c7g.xlarge.search<br />c7g.2xlarge.search<br />c7g.4xlarge.search<br />c7g.8xlarge.search<br />c7g.12xlarge.search<br />c7g.16xlarge.search<br />m7g.medium.search<br />m7g.large.search<br />m7g.xlarge.search<br />m7g.2xlarge.search<br />m7g.4xlarge.search<br />m7g.8xlarge.search<br />m7g.12xlarge.search<br />m7g.16xlarge.search<br />r7g.medium.search<br />r7g.large.search<br />r7g.xlarge.search<br />r7g.2xlarge.search<br />r7g.4xlarge.search<br />r7g.8xlarge.search<br />r7g.12xlarge.search<br />r7g.16xlarge.search<br />r7gd.large.search<br />r7gd.xlarge.search<br />r7gd.2xlarge.search<br />r7gd.4xlarge.search<br />r7gd.8xlarge.search<br />r7gd.12xlarge.search<br />r7gd.16xlarge.search | Graviton3 only supports gp3 storage. Graviton3 instances (c7g, m7g, r7g) support all OpenSearch versions and Elasticsearch versions 7.9 and 7.10. | 
| OR1 | `or1.medium.search`<br />`or1.large.search`<br />`or1.xlarge.search`<br />`or1.2xlarge.search`<br />`or1.4xlarge.search`<br />`or1.8xlarge.search`<br />`or1.12xlarge.search`<br />`or1.16xlarge.search` |  +  The OR1 instance types require OpenSearch 2.11 or later. <br />+  OR1 instances are only compatible with other Graviton instance types master nodes (C6g, M6g, R6g).   | 
| OR2 | `or2.medium.search`<br />`or2.large.search`<br />`or2.xlarge.search`<br />`or2.2xlarge.search`<br />`or2.4xlarge.search`<br />`or2.8xlarge.search `<br />`or2.12xlarge.search`<br />`or2.16xlarge.search` |  +  OR2 and OM2 instance types require OpenSearch 2.11 or later and are only compatible with Graviton-based master node instance types (C6g, M6g, R6g).   | 
| OM2 | `om2.large.search`<br />`om2.xlarge.search`<br />`om2.2xlarge.search`<br />`om2.4xlarge.search`<br />`om2.8xlarge.search`<br />`om2.12xlarge.search`<br />`om2.16xlarge.search` |  +  OR2 and OM2 instance types require OpenSearch 2.11 or later and are only compatible with Graviton-based master node instance types (C6g, M6g, R6g).   | 
| OI2 | `oi2.large.search`<br />`oi2.xlarge.search`<br />`oi2.2xlarge.search`<br />`oi2.4xlarge.search`<br />`oi2.8xlarge.search`<br />`oi2.12xlarge.search`<br />`oi2.16xlarge.search`<br />`oi2.24xlarge.search`<br />`oi2.32xlarge.search` |  +  The OI2 instance types require OpenSearch 2.11 or later. <br />+  These instances are provisioned with NVMe storage and do not require separate EBS storage. <br />+  These instances(upto 8xlarge) can also be used as warm nodes on OpenSearch 3.3 or later.   | 
| Im4gn | `im4gn.large.search`<br />`im4gn.xlarge.search`<br />`im4gn.2xlarge.search`<br />`im4gn.4xlarge.search`<br />`im4gn.8xlarge.search`<br />`im4gn.16xlarge.search` |  +  The Im4gn instance types require Elasticsearch 7.9 or later or any version of OpenSearch, and do not support EBS storage volumes. <br />+  Im4gn instances are only compatible with other Graviton instance types (C6g, M6g, R6g, R6gd). You can't combine Graviton and non-Graviton instances in the same cluster.   | 
| T3 | `t3.small.search`<br />`t3.medium.search` |  +  The T3 instance types require Elasticsearch 5.6 or later or any version of OpenSearch. <br />+  You can use T3 instance types only if your domain is provisioned without standby. For more information, see [Multi-AZ without Standby](managedomains-multiaz.md#managedomains-za-no-standby). <br />+  You can use T3 instance types only if the instance count for your domain is 10 or fewer. <br />+  The T3 instance types do not support UltraWarm storage, cold storage, or Auto-Tune.   | 
| c7i | `c7i.large.search`<br />`c7i.xlarge.search`<br />`c7i.2xlarge.search`<br />`c7i.4xlarge.search`<br />`c7i.8xlarge.search`<br />`c7i.12xlarge.search`<br />`c7i.16xlarge.search` |  +  The c7i instance requires Elasticsearch 5.1 or later or any version of OpenSearch, and only supports GP3 storage volumes.   | 
| m7i | `m7i.large.search`<br />`m7i.xlarge.search`<br />`m7i.2xlarge.search`<br />`m7i.4xlarge.search`<br />`m7i.8xlarge.search`<br />`m7i.12xlarge.search`<br />`m7i.16xlarge.search` |  +  The m7i instance requires Elasticsearch 5.1 or later or any version of OpenSearch, and only supports GP3 storage volumes.   | 
| r7i | `r7i.large.search`<br />`r7i.xlarge.search`<br />`r7i.2xlarge.search`<br />`r7i.4xlarge.search`<br />`r7i.8xlarge.search`<br />`r7i.12xlarge.search`<br />`r7i.16xlarge.search` |  +  The r7i instance requires Elasticsearch 5.1 or later or any version of OpenSearch, and only supports GP3 storage volumes.   | 
| c8g | `c8g.large.search`<br />`c8g.xlarge.search`<br />`c8g.2xlarge.search`<br />`c8g.4xlarge.search`<br />`c8g.8xlarge.search`<br />`c8g.12xlarge.search`<br />`c8g.16xlarge.search` |  +  The c8g instance types require Elasticsearch 7.9 or later or any version of OpenSearch and only supports GP3 storage volumes.   | 
| m8g | `m8g.medium.search`<br />`m8g.large.search`<br />`m8g.xlarge.search`<br />`m8g.2xlarge.search`<br />`m8g.4xlarge.search`<br />`m8g.8xlarge.search`<br />`m8g.12xlarge.search`<br />`m8g.16xlarge.search` |  +  The m8g instance types require Elasticsearch 7.9 or later or any version of OpenSearch and only supports GP3 storage volumes.   | 
| r8g | `r8g.medium.search`<br />`r8g.large.search`<br />`r8g.xlarge.search`<br />`r8g.2xlarge.search`<br />`r8g.4xlarge.search`<br />`r8g.8xlarge.search`<br />`r8g.12xlarge.search`<br />`r8g.16xlarge.search` |  +  The r8g instance types require Elasticsearch 7.9 or later or any version of OpenSearch and only supports GP3 storage volumes.   | 
| r8gd | `r8gd.medium.search`<br />`r8gd.large.search`<br />`r8gd.2xlarge.search`<br />`r8gd.4xlarge.search`<br />`r8gd.8xlarge.search`<br />`r8gd.12xlarge.search`<br />`r8gd.16xlarge.search` |  +  The r8gd instance types require Elasticsearch 7.9 or later or any version of OpenSearch and do not support EBS storage volumes.   | 

## Previous generation instance types
<a name="previous-gen"></a>

OpenSearch Service offers previous generation instance types for users who have optimized their applications around them and have yet to upgrade. We encourage you to use current generation instance types to get the best performance, but we continue to support the following previous generation instance types.


| Instance type | Instances | Restrictions | 
| --- | --- | --- | 
| C4 | `c4.large.search`<br />`c4.xlarge.search`<br />`c4.2xlarge.search`<br />`c4.4xlarge.search`<br />`c4.8xlarge.search` |  | 
| I2 | `i2.xlarge.search`<br />`i2.2xlarge.search` |  | 
| M3 | `m3.medium.search`<br />`m3.large.search`<br />`m3.xlarge.search`<br />`m3.2xlarge.search` |  +  The M3 instance types do not support encryption of data at rest, fine-grained access control, or cross-cluster search. <br />+  The M3 instance types have additional restrictions by OpenSearch version. To learn more, see [Invalid M3 instance type](handling-errors.md#m3-instance-types).   | 
| M4 | `m4.large.search`<br />`m4.xlarge.search`<br />`m4.2xlarge.search`<br />`m4.4xlarge.search`<br />`m4.10xlarge.search` |  | 
| R3 | `r3.large.search`<br />`r3.xlarge.search`<br />`r3.2xlarge.search`<br />`r3.4xlarge.search`<br />`r3.8xlarge.search` | The R3 instance types do not support encryption of data at rest or fine-grained access control. | 
| R4 | `r4.large.search`<br />`r4.xlarge.search`<br />`r4.2xlarge.search`<br />`r4.4xlarge.search`<br />`r4.8xlarge.search`<br />`r4.16xlarge.search` |  | 
| i4g | i4g.large.search<br />i4g.xlarge.search<br />i4g.2xlarge.search<br />i4g.4xlarge.search<br />i4g.8xlarge.search<br />i4g.16xlarge.search | The i4g instance types require Elasticsearch 7.9 or later or any version of OpenSearch, and do not support EBS storage volumes. | 
| C5 | `c5.large.search`<br />`c5.xlarge.search`<br />`c5.2xlarge.search`<br />`c5.4xlarge.search`<br />`c5.9xlarge.search`<br />`c5.18xlarge.search` | The C5 instance types require Elasticsearch 5.1 or later or any version of OpenSearch. | 
| C6g | `c6g.large.search`<br />`c6g.xlarge.search`<br />`c6g.2xlarge.search`<br />`c6g.4xlarge.search`<br />`c6g.8xlarge.search`<br />`c6g.12xlarge.search` |  +  The C6g instance types require Elasticsearch 7.9 or later or any version of OpenSearch. <br />+  C6g instances are only compatible with other Graviton instance types (Im4gn, M6g, R6g, R6gd). You can't combine Graviton and non-Graviton instances in the same cluster.   | 
| I3 | `i3.large.search`<br />`i3.xlarge.search`<br />`i3.2xlarge.search`<br />`i3.4xlarge.search`<br />`i3.8xlarge.search`<br />`i3.16xlarge.search` |   | 
| M5 | `m5.large.search`<br />`m5.xlarge.search`<br />`m5.2xlarge.search`<br />`m5.4xlarge.search`<br />`m5.12xlarge.search` | The M5 instance types require Elasticsearch 5.1 or later or any version of OpenSearch. | 
| M6g | `m6g.large.search`<br />`m6g.xlarge.search`<br />`m6g.2xlarge.search`<br />`m6g.4xlarge.search`<br />`m6g.8xlarge.search`<br />`m6g.12xlarge.search` |  +  The M6g instance types require Elasticsearch 7.9 or later or any version of OpenSearch. <br />+  M6g instances are only compatible with other Graviton instance types (Im4gn, C6g, R6g, R6gd). You can't combine Graviton and non-Graviton instances in the same cluster.   | 
| R5 | `r5.large.search`<br />`r5.xlarge.search`<br />`r5.2xlarge.search`<br />`r5.4xlarge.search`<br />`r5.12xlarge.search` | The R5 instance types require Elasticsearch 5.1 or later or any version of OpenSearch. | 
| R6g | `r6g.large.search`<br />`r6g.xlarge.search`<br />`r6g.2xlarge.search`<br />`r6g.4xlarge.search`<br />`r6g.8xlarge.search`<br />`r6g.12xlarge.search` |  +  The R6g instance types require Elasticsearch 7.9 or later or any version of OpenSearch. <br />+  R6g instances are only compatible with other Graviton instance types (Im4gn, C6g, M6g, R6gd). You can't combine Graviton and non-Graviton instances in the same cluster.   | 
| R6gd | `r6gd.large.search`<br />`r6gd.xlarge.search`<br />`r6gd.2xlarge.search`<br />`r6gd.4xlarge.search`<br />`r6gd.8xlarge.search`<br />`r6gd.12xlarge.search`<br />`r6gd.16xlarge.search` |  +  The R6gd instance types require Elasticsearch 7.9 or later or any version of OpenSearch, and do not support EBS storage volumes. <br />+  R6gd instances are only compatible with other Graviton instance types (Im4gn, C6g, M6g, R6g). You can't combine Graviton and non-Graviton instances in the same cluster.   | 
| T2 | `t2.micro.search`<br />`t2.small.search`<br />`t2.medium.search` |  +  You can use the T2 instance types only if the instance count for your domain is 10 or fewer. <br />+  The `t2.micro.search` instance type supports only Elasticsearch 1.5 and 2.3. <br />+  The T2 instance types do not support encryption of data at rest, fine-grained access control, UltraWarm storage, cold storage, cross-cluster search, or Auto-Tune.   | 

**Tip**  
We often recommend different instance types for [dedicated master nodes](managedomains-dedicatedmasternodes.md) and data nodes.