Amazon Elasticsearch Service
Developer Guide (API Version 2015-01-01)

Amazon Elasticsearch Service Limits

The following tables show limits for Amazon ES resources, including the number of instances per cluster, the minimum and maximum sizes for EBS volumes, and network limits.

Cluster and Instance Limits

The following table shows Amazon ES limits for clusters and instances.

Clusters and Instances Limit

Maximum number of data instances (instance count) per cluster

20 (except for the T2 instance types, which have a maximum of 10)


The default limit is 20 data instances per domain. To request an increase up to 200 per domain (for Elasticsearch 2.3 or later), create a case with the AWS Support Center.

For more information about requesting an increase, see AWS Service Limits.

Maximum number of dedicated master nodes



You can use the T2 instance types as dedicated master nodes only if the instance count is 10 or fewer.

Smallest supported instance type

t2.micro.elasticsearch (versions 1.5 and 2.3) and t2.small.elasticsearch (version 5.x and 6.x).

Maximum number of domains per account (per region)


For a list of the instance types that Amazon ES supports, see Supported Instance Types.

EBS Volume Size Limits

The following table shows the minimum and maximum sizes for EBS volumes for each instance type that Amazon ES supports. See Amazon Elasticsearch Service Pricing for information on which instance types offer instance storage.


If you select magnetic storage under EBS volume type when creating your domain, maximum volume size is 100 GiB for all instance types except t2.micro, t2.small, and t2.medium. For the maximum sizes listed in the following table, select one of the SSD options.

Instance Type Minimum EBS Size Maximum EBS Size
t2.micro.elasticsearch 10 GiB 35 GiB
t2.small.elasticsearch 10 GiB 35 GiB
t2.medium.elasticsearch 10 GiB 35 GiB
m3.medium.elasticsearch 10 GiB 100 GiB
m3.large.elasticsearch 10 GiB 512 GiB
m3.xlarge.elasticsearch 10 GiB 512 GiB
m3.2xlarge.elasticsearch 10 GiB 512 GiB
m4.large.elasticsearch 10 GiB 512 GiB
m4.xlarge.elasticsearch 10 GiB 1 TiB*
m4.2xlarge.elasticsearch 10 GiB 1.5 TiB*
m4.4xlarge.elasticsearch 10 GiB 1.5 TiB*
m4.10xlarge.elasticsearch 10 GiB 1.5 TiB*
c4.large.elasticsearch 10 GiB 100 GiB
c4.xlarge.elasticsearch 10 GiB 512 GiB
c4.2xlarge.elasticsearch 10 GiB 1 TiB*
c4.4xlarge.elasticsearch 10 GiB 1.5 TiB*
c4.8xlarge.elasticsearch 10 GiB 1.5 TiB*
r3.large.elasticsearch 10 GiB 512 GiB
r3.xlarge.elasticsearch 10 GiB 512 GiB
r3.2xlarge.elasticsearch 10 GiB 512 GiB
r3.4xlarge.elasticsearch 10 GiB 512 GiB
r3.8xlarge.elasticsearch 10 GiB 512 GiB
r4.large.elasticsearch 10 GiB 1 TiB*
r4.xlarge.elasticsearch 10 GiB 1.5 TiB*
r4.2xlarge.elasticsearch 10 GiB 1.5 TiB*
r4.4xlarge.elasticsearch 10 GiB 1.5 TiB*
r4.8xlarge.elasticsearch 10 GiB 1.5 TiB*
r4.16xlarge.elasticsearch 10 GiB 1.5 TiB*
i2.xlarge.elasticsearch 10 GiB 512 GiB
i2.2xlarge.elasticsearch 10 GiB 512 GiB
i3.large.elasticsearch N/A N/A
i3.xlarge.elasticsearch N/A N/A
i3.2xlarge.elasticsearch N/A N/A
i3.4xlarge.elasticsearch N/A N/A
i3.8xlarge.elasticsearch N/A N/A
i3.16xlarge.elasticsearch N/A N/A

* 512 GiB is the maximum volume size that is supported with Elasticsearch version 1.5.

Network Limits

The following table shows the maximum size of HTTP request payloads.

Instance Type Maximum Size of HTTP Request Payloads
t2.micro.elasticsearch 10 MB
t2.small.elasticsearch 10 MB
t2.medium.elasticsearch 10 MB
m3.medium.elasticsearch 10 MB
m3.large.elasticsearch 10 MB
m3.xlarge.elasticsearch 100 MB
m3.2xlarge.elasticsearch 100 MB
m4.large.elasticsearch 10 MB
m4.xlarge.elasticsearch 100 MB
m4.2xlarge.elasticsearch 100 MB
m4.4xlarge.elasticsearch 100 MB
m4.10xlarge.elasticsearch 100 MB
c4.large.elasticsearch 10 MB
c4.xlarge.elasticsearch 100 MB
c4.2xlarge.elasticsearch 100 MB
c4.4xlarge.elasticsearch 100 MB
c4.8xlarge.elasticsearch 100 MB
r3.large.elasticsearch 10 MB
r3.xlarge.elasticsearch 100 MB
r3.2xlarge.elasticsearch 100 MB
r3.4xlarge.elasticsearch 100 MB
r3.8xlarge.elasticsearch 100 MB
r4.large.elasticsearch 100 MB
r4.xlarge.elasticsearch 100 MB
r4.2xlarge.elasticsearch 100 MB
r4.4xlarge.elasticsearch 100 MB
r4.8xlarge.elasticsearch 100 MB
r4.16xlarge.elasticsearch 100 MB
i2.xlarge.elasticsearch 100 MB
i2.2xlarge.elasticsearch 100 MB
i3.large.elasticsearch 100 MB
i3.xlarge.elasticsearch 100 MB
i3.2xlarge.elasticsearch 100 MB
i3.4xlarge.elasticsearch 100 MB
i3.8xlarge.elasticsearch 100 MB
i3.16xlarge.elasticsearch 100 MB

Java Process Limit

Amazon ES limits Java processes to a heap size of 32 GiB. Advanced users can specify the percentage of the heap used for field data. For more information, see Configuring Advanced Options and JVM OutOfMemoryError.