Amazon OpenSearch Service limits - Amazon OpenSearch Service (successor to Amazon Elasticsearch Service)
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Amazon OpenSearch Service limits

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

Cluster and instance limits

The following table shows OpenSearch Service limits for clusters and instances.

Clusters and instances Limit

Maximum number of data nodes per cluster

80 (except for the T2 and T3 instance types, which have a maximum of 10)

To request an increase up to 200 data nodes, create a case with the Amazon Support Center. For more information about requesting an increase, see Amazon Service Limits.

Maximum number of warm nodes per cluster

150

Maximum total number of data and warm nodes per cluster

200

You might have to request a data node limit increase to reach this total. For example, your domain might have 80 data nodes and 120 warm nodes.

Maximum number of dedicated master nodes per cluster

5

You can use the T2 and T3 instance types for dedicated master nodes only if the number of data nodes is 10 or fewer. We don't recommend T2 or t3.small instance types for production domains.

Maximum total storage per cluster

3 PiB

This maximum is the sum of all data nodes and warm nodes. For example, your domain might have 45 r6gd.16xlarge.search instances and 140 ultrawarm1.large.search instances for a total of 2.88 PiB of storage.

Smallest supported instance type per OpenSearch version

t2.small.search

Maximum number of domains per account (per Region)

100

Maximum number of custom packages per account (per Region)

25

Maximum number of custom packages per domain

20

For a list of the instance types that OpenSearch Service supports, see Supported Instance Types.

UltraWarm storage limits

The following table lists the UltraWarm instance types and the maximum amount of storage that each type can use. For more information about UltraWarm, see UltraWarm storage for Amazon OpenSearch Service.

Instance type Maximum storage
ultrawarm1.medium.search 1.5 TiB
ultrawarm1.large.search 20 TiB

EBS volume size limits

The following table shows the minimum and maximum sizes for EBS volumes for each instance type that OpenSearch Service supports. For information about which instance types include instance storage and additional hardware details, see Amazon OpenSearch Service Pricing.

  • If you choose magnetic storage under EBS volume type when creating your domain, the maximum volume size is 100 GiB for all instance types except t2.small and t2.medium, and all Graviton instances (M6G, C6G, R6G, and R6GD), which don't support magnetic storage. For the maximum sizes listed in the following table, choose one of the SSD options.

  • Some older-generation instance types include instance storage, but also support EBS storage. If you choose EBS storage for one of these instance types, the storage volumes are not additive. You can use either an EBS volume or the instance storage, not both.

Instance type Minimum EBS size Maximum EBS size
t2.micro.search 10 GiB 35 GiB
t2.small.search 10 GiB 35 GiB
t2.medium.search 10 GiB 35 GiB
t3.small.search 10 GiB 100 GiB
t3.medium.search 10 GiB 200 GiB
m3.medium.search 10 GiB 100 GiB
m3.large.search 10 GiB 512 GiB
m3.xlarge.search 10 GiB 512 GiB
m3.2xlarge.search 10 GiB 512 GiB
m4.large.search 10 GiB 512 GiB
m4.xlarge.search 10 GiB 1 TiB
m4.2xlarge.search 10 GiB 1.5 TiB
m4.4xlarge.search 10 GiB 1.5 TiB
m4.10xlarge.search 10 GiB 1.5 TiB
m5.large.search 10 GiB 512 GiB
m5.xlarge.search 10 GiB 1 TiB
m5.2xlarge.search 10 GiB 1.5 TiB
m5.4xlarge.search 10 GiB 3 TiB
m5.12xlarge.search 10 GiB 9 TiB
m6g.large.search 10 GiB 512 GiB
m6g.xlarge.search 10 GiB 1 TiB
m6g.2xlarge.search 10 GiB 1.5 TiB
m6g.4xlarge.search 10 GiB 3 TiB
m6g.8xlarge.search 10 GiB 6 TiB
m6g.12xlarge.search 10 GiB 9 TiB
c4.large.search 10 GiB 100 GiB
c4.xlarge.search 10 GiB 512 GiB
c4.2xlarge.search 10 GiB 1 TiB
c4.4xlarge.search 10 GiB 1.5 TiB
c4.8xlarge.search 10 GiB 1.5 TiB
c5.large.search 10 GiB 256 GiB
c5.xlarge.search 10 GiB 512 GiB
c5.2xlarge.search 10 GiB 1 TiB
c5.4xlarge.search 10 GiB 1.5 TiB
c5.9xlarge.search 10 GiB 3.5 TiB
c5.18xlarge.search 10 GiB 7 TiB
c6g.large.search 10 GiB 256 GiB
c6g.xlarge.search 10 GiB 512 GiB
c6g.2xlarge.search 10 GiB 1 TiB
c6g.4xlarge.search 10 GiB 1.5 TiB
c6g.8xlarge.search 10 GiB 3 TiB
c6g.12xlarge.search 10 GiB 4.5 TiB
r3.large.search 10 GiB 512 GiB
r3.xlarge.search 10 GiB 512 GiB
r3.2xlarge.search 10 GiB 512 GiB
r3.4xlarge.search 10 GiB 512 GiB
r3.8xlarge.search 10 GiB 512 GiB
r4.large.search 10 GiB 1 TiB
r4.xlarge.search 10 GiB 1.5 TiB
r4.2xlarge.search 10 GiB 1.5 TiB
r4.4xlarge.search 10 GiB 1.5 TiB
r4.8xlarge.search 10 GiB 1.5 TiB
r4.16xlarge.search 10 GiB 1.5 TiB
r5.large.search 10 GiB 1 TiB
r5.xlarge.search 10 GiB 1.5 TiB
r5.2xlarge.search 10 GiB 3 TiB
r5.4xlarge.search 10 GiB 6 TiB
r5.12xlarge.search 10 GiB 12 TiB
r6g.large.search 10 GiB 1 TiB
r6g.xlarge.search 10 GiB 1.5 TiB
r6g.2xlarge.search 10 GiB 3 TiB
r6g.4xlarge.search 10 GiB 6 TiB
r6g.8xlarge.search 10 GiB 8 TiB
r6g.12xlarge.search 10 GiB 12 TiB
r6gd.large.search N/A N/A
r6gd.xlarge.search N/A N/A
r6gd.2xlarge.search N/A N/A
r6gd.4xlarge.search N/A N/A
r6gd.8xlarge.search N/A N/A
r6gd.12xlarge.search N/A N/A
r6gd.16xlarge.search N/A N/A
i2.xlarge.search 10 GiB 512 GiB
i2.2xlarge.search 10 GiB 512 GiB
i3.large.search N/A N/A
i3.xlarge.search N/A N/A
i3.2xlarge.search N/A N/A
i3.4xlarge.search N/A N/A
i3.8xlarge.search N/A N/A
i3.16xlarge.search N/A N/A

Network limits

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

Instance type Maximum size of HTTP request payloads
t2.micro.search 10 MiB
t2.small.search 10 MiB
t2.medium.search 10 MiB
t3.small.search 10 MiB
t3.medium.search 10 MiB
m3.medium.search 10 MiB
m3.large.search 10 MiB
m3.xlarge.search 100 MiB
m3.2xlarge.search 100 MiB
m4.large.search 10 MiB
m4.xlarge.search 100 MiB
m4.2xlarge.search 100 MiB
m4.4xlarge.search 100 MiB
m4.10xlarge.search 100 MiB
m5.large.search 10 MiB
m5.xlarge.search 100 MiB
m5.2xlarge.search 100 MiB
m5.4xlarge.search 100 MiB
m5.12xlarge.search 100 MiB
m6g.large.search 10 MiB
m6g.xlarge.search 100 MiB
m6g.2xlarge.search 100 MiB
m6g.4xlarge.search 100 MiB
m6g.8xlarge.search 100 MiB
m6g.12xlarge.search 100 MiB
c4.large.search 10 MiB
c4.xlarge.search 100 MiB
c4.2xlarge.search 100 MiB
c4.4xlarge.search 100 MiB
c4.8xlarge.search 100 MiB
c5.large.search 10 MiB
c5.xlarge.search 100 MiB
c5.2xlarge.search 100 MiB
c5.4xlarge.search 100 MiB
c5.9xlarge.search 100 MiB
c5.18xlarge.search 100 MiB
c6g.large.search 10 MiB
c6g.xlarge.search 100 MiB
c6g.2xlarge.search 100 MiB
c6g.4xlarge.search 100 MiB
c6g.8xlarge.search 100 MiB
c6g.12xlarge.search 100 MiB
r3.large.search 10 MiB
r3.xlarge.search 100 MiB
r3.2xlarge.search 100 MiB
r3.4xlarge.search 100 MiB
r3.8xlarge.search 100 MiB
r4.large.search 100 MiB
r4.xlarge.search 100 MiB
r4.2xlarge.search 100 MiB
r4.4xlarge.search 100 MiB
r4.8xlarge.search 100 MiB
r4.16xlarge.search 100 MiB
r5.large.search 100 MiB
r5.xlarge.search 100 MiB
r5.2xlarge.search 100 MiB
r5.4xlarge.search 100 MiB
r5.12xlarge.search 100 MiB
r6g.large.search 100 MiB
r6g.xlarge.search 100 MiB
r6g.2xlarge.search 100 MiB
r6g.4xlarge.search 100 MiB
r6g.8xlarge.search 100 MiB
r6g.12xlarge.search 100 MiB
r6gd.large.search 100 MiB
r6gd.xlarge.search 100 MiB
r6gd.2xlarge.search 100 MiB
r6gd.4xlarge.search 100 MiB
r6gd.8xlarge.search 100 MiB
r6gd.12xlarge.search 100 MiB
r6gd.16xlarge.search 100 MiB
i2.xlarge.search 100 MiB
i2.2xlarge.search 100 MiB
i3.large.search 100 MiB
i3.xlarge.search 100 MiB
i3.2xlarge.search 100 MiB
i3.4xlarge.search 100 MiB
i3.8xlarge.search 100 MiB
i3.16xlarge.search 100 MiB

Java process limit

OpenSearch Service 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 Advanced cluster settings and JVM OutOfMemoryError.

Domain policy limit

OpenSearch Service limits access policies on domains to 100 KiB.