---
title: "OpenSearch Versions and Configurations"
sidebar_label: "Versions and Configurations"
description: "Available OpenSearch versions, configuration lines in cluster node groups"
sidebar_position: 1
toc_max_heading_level: 3
---

import {CustomTable} from '@selectel/docux/components'
import Formbricks from '@theme/MDXComponents/Formbricks'
import Tabs from '@theme/Tabs'
import TabItem from '@theme/TabItem'
import {TabItemLabel} from '@selectel/docux/components'

# OpenSearch Versions and Configurations

## Versions \{#versions}

OpenSearch version 2.18 is supported. OpenSearch is distributed under the [Apache 2.0 license](https://www.apache.org/licenses/LICENSE-2.0.html).

## Node group configurations \{#node-group-configurations}

An OpenSearch Managed Database cluster consists of [node groups](/managed-databases/opensearch/about-node-groups.mdx). All nodes in a group have the same configuration — the number of vCPUs, RAM, and disk size. Configurations are divided into [lines](#configuration-lines). Available lines depend on the node group role. Depending on the line, configuration, and [pool](/infrastructure/locations.mdx#pool), different [processors](#available-processors) and [disks are used](/managed-databases/opensearch/volumes.mdx).

When choosing a configuration, note that some disk space is reserved for system needs and is unavailable for database storage. Learn more in the [Using disk space in an OpenSearch cluster](/managed-databases/opensearch/use-disk-space.mdx) guide.

The configuration can be selected when [creating an OpenSearch Managed Database cluster](/managed-databases/opensearch/create-cluster.mdx). After the cluster is created, you can change the node group configuration — [scale the node group](/managed-databases/opensearch/resize-cluster.mdx#resize-node-group).

## Configuration lines \{#configuration-lines}

The resource ratio in configuration lines can be:

* fixed — in the [Standard](#standard-line), [CPU](#cpu-line), [Memory](#memory-line), and HighFreq (#highfreq-line) lines;
* or flexible — in the [Flex line](#flex-line).

You can view the availability of configuration lines in regions in the [Managed Databases](/infrastructure/availability-matrix.mdx#managed-databases) availability matrix.

### Standard \{#standard-line}

:::info

The line is available only for node groups with Manager and Data roles — for more information about roles, see the [Node Groups](/managed-databases/opensearch/about-node-groups.mdx) instruction.

:::

A line of fixed configurations with a local disk and a balanced vCPU:RAM ratio, suitable for most DBMS. We recommend using this line if you do not know your load profile.

Intel® Xeon® Scalable or AMD EPYC™ processors are used. You can view processor frequencies for the various lines in the [Processors](#available-processors) table.

You can view disk performance and bandwidth for the various lines in the [Performance and Bandwidth](/managed-databases/opensearch/volumes.mdx#performance-and-bandwidth) table.

<CustomTable>
  <table data-layout-fixed>
    <thead>
      <tr>
        <th>vCPU count</th><th>RAM</th><th>Local disk</th>
      </tr>
    </thead>

    <tbody>
      <tr>
        <td>4</td><td>8 GB</td><td>64 GB</td>
      </tr>

      <tr>
        <td>4</td><td>16 GB</td><td>128 GB</td>
      </tr>

      <tr>
        <td>6</td><td>32 GB</td><td>256 GB</td>
      </tr>

      <tr>
        <td>6</td><td>64 GB</td><td>512 GB</td>
      </tr>

      <tr>
        <td>10</td><td>96 GB</td><td>768 GB</td>
      </tr>

      <tr>
        <td>12</td><td>128 GB</td><td>1 TB</td>
      </tr>

      <tr>
        <td>16</td><td>160 GB</td><td>1.5 TB</td>
      </tr>

      <tr>
        <td>20</td><td>208 GB</td><td>2 TB</td>
      </tr>
    </tbody>
  </table>
</CustomTable>

### CPU \{#cpu-line}

:::info

The line is available only for node groups with Manager and Data roles — for more information about roles, see the [Node Groups](/managed-databases/opensearch/about-node-groups.mdx) instruction.

:::

A line of fixed configurations with a local disk and a balanced vCPU:RAM ratio. Suitable for workload profiles that are demanding on compute. For example, if the database performs analytical queries, multiple nested queries, or data encryption.

Intel® Xeon® Scalable or AMD EPYC™ processors are used. You can view processor frequencies for the various lines in the [Processors](#available-processors) table.

You can view disk performance and bandwidth for the various lines in the [Performance and Bandwidth](/managed-databases/opensearch/volumes.mdx#performance-and-bandwidth) table.

<CustomTable>
  <table data-layout-fixed>
    <thead>
      <tr>
        <th>Number of vCPUs</th><th>RAM</th><th>Local disk</th>
      </tr>
    </thead>

    <tbody>
      <tr>
        <td>6</td><td>8 GB</td><td>64 GB</td>
      </tr>

      <tr>
        <td>6</td><td>16 GB</td><td>128 GB</td>
      </tr>

      <tr>
        <td>8</td><td>32 GB</td><td>256 GB</td>
      </tr>

      <tr>
        <td>8</td><td>64 GB</td><td>512 GB</td>
      </tr>

      <tr>
        <td>12</td><td>96 GB</td><td>768 GB</td>
      </tr>

      <tr>
        <td>16</td><td>128 GB</td><td>1 TB</td>
      </tr>

      <tr>
        <td>20</td><td>160 GB</td><td>1.5 TB</td>
      </tr>

      <tr>
        <td>24</td><td>208 GB</td><td>2 TB</td>
      </tr>
    </tbody>
  </table>
</CustomTable>

### Memory \{#memory-line}

:::info

The line is available only for node groups with Manager and Data roles — for more information about roles, see the [Node Groups](/managed-databases/opensearch/about-node-groups.mdx) instruction.

:::

A line of fixed configurations with a local disk and a balanced vCPU:RAM ratio. Suitable for workload profiles that are demanding of caching. For example, if the database performs multiple, rarely repeating queries to different parts of tables. One way to determine such a workload profile is to monitor the `Cache_hit_ratio` (Cache\_hit\_ratio) metric, which shows the percentage of data in a query read from the cache.

Intel® Xeon® Scalable or AMD EPYC™ processors are used. You can view processor frequencies for the various lines in the [Processors](#available-processors) table.

You can view disk performance and bandwidth for the various lines in the [Performance and Bandwidth](/managed-databases/opensearch/volumes.mdx#performance-and-bandwidth) table.

<CustomTable>
  <table data-layout-fixed>
    <thead>
      <tr>
        <th>Number of vCPUs</th><th>RAM</th><th>Local disk</th>
      </tr>
    </thead>

    <tbody>
      <tr>
        <td>2</td><td>8 GB</td><td>64 GB</td>
      </tr>

      <tr>
        <td>2</td><td>16 GB</td><td>128 GB</td>
      </tr>

      <tr>
        <td>4</td><td>32 GB</td><td>256 GB</td>
      </tr>

      <tr>
        <td>4</td><td>64 GB</td><td>512 GB</td>
      </tr>

      <tr>
        <td>8</td><td>96 GB</td><td>768 GB</td>
      </tr>

      <tr>
        <td>10</td><td>128 GB</td><td>1 TB</td>
      </tr>

      <tr>
        <td>14</td><td>160 GB</td><td>1.5 TB</td>
      </tr>

      <tr>
        <td>16</td><td>208 GB</td><td>2 TB</td>
      </tr>
    </tbody>
  </table>
</CustomTable>

### HighFreq \{#highfreq-line}

:::info

The line is available only for node groups with Manager and Data roles — for more information about roles, see the [Node Groups](/managed-databases/opensearch/about-node-groups.mdx) instruction.

:::

A line of fixed configurations with a balanced vCPU:RAM ratio.

High-performance Enterprise-level hardware is used:

* Intel® Xeon® Gold 6354 (in pools ru-9, ru-2, ru-8, ke-1) or AMD EPYC 9474F (in pools ru-3, ru-7, uz-1) processors. You can view processor frequencies for the various lines in the [Processors](#available-processors) table;
* RAM ECC Reg 3.2 GHz (in pools ru-9, ru-2, ru-8, ke-1) or RAM DDR5 ECC Reg 4.8 GHz (in pools ru-3, ru-7, uz-1);
* High-performance NVMe SSDs. You can view disk performance and bandwidth for the various lines in the [Performance and Bandwidth](/managed-databases/opensearch/volumes.mdx#performance-and-bandwidth) table.

<CustomTable>
  <table data-layout-fixed>
    <thead>
      <tr>
        <th>Number of vCPUs</th><th>RAM</th><th>Local disk</th>
      </tr>
    </thead>

    <tbody>
      <tr>
        <td>2</td><td>8 GB</td><td>64 GB</td>
      </tr>

      <tr>
        <td>2</td><td>16 GB</td><td>128 GB</td>
      </tr>

      <tr>
        <td>4</td><td>8 GB</td><td>64 GB</td>
      </tr>

      <tr>
        <td>4</td><td>16 GB</td><td>128 GB</td>
      </tr>

      <tr>
        <td>4</td><td>32 GB</td><td>256 GB</td>
      </tr>

      <tr>
        <td>4</td><td>64 GB</td><td>512 GB</td>
      </tr>

      <tr>
        <td>6</td><td>32 GB</td><td>256 GB</td>
      </tr>

      <tr>
        <td>6</td><td>64 GB</td><td>512 GB</td>
      </tr>

      <tr>
        <td>6</td><td>96 GB</td><td>768 GB</td>
      </tr>

      <tr>
        <td>6</td><td>128 GB</td><td>962 GB</td>
      </tr>

      <tr>
        <td>8</td><td>96 GB</td><td>768 GB</td>
      </tr>

      <tr>
        <td>8</td><td>128 GB</td><td>962 GB</td>
      </tr>

      <tr>
        <td>8</td><td>156 GB</td><td>1.5 GB</td>
      </tr>

      <tr>
        <td>10</td><td>128 GB</td><td>962 GB</td>
      </tr>

      <tr>
        <td>10</td><td>156 GB</td><td>1.5 TB</td>
      </tr>

      <tr>
        <td>12</td><td>156 GB</td><td>1.5 TB</td>
      </tr>

      <tr>
        <td>14</td><td>184 GB</td><td>2 TB</td>
      </tr>

      <tr>
        <td>16</td><td>184 GB</td><td>2 TB</td>
      </tr>
    </tbody>
  </table>
</CustomTable>

### Flex \{#flex-line}

A line of custom configurations with a local or network volume, in which you can choose the resource ratio.

You can view information about disks in the [Disks](/managed-databases/opensearch/volumes.mdx) instruction.

You can view disk performance and bandwidth for the various lines in the [Performance and Bandwidth](/managed-databases/opensearch/volumes.mdx#performance-and-bandwidth) table.

Intel® Xeon® Scalable or AMD EPYC™ processors are used. You can view processor frequencies for the various lines in the [Processors](#available-processors) table.

You can check configuration availability in regions in the [Managed Databases](/infrastructure/availability-matrix.mdx#managed-databases) availability matrix. Configuration limits depend on the [pool](/infrastructure/locations.mdx#pool).

<Tabs queryString="configurations">
  <TabItem value="local-disks" default>
    <TabItemLabel>
      Local disk
    </TabItemLabel>

    <CustomTable>
      <table data-layout-fixed>
        <thead>
          <tr>
            <th />

            <th>In pools<br />ru-1, ru-2<br /></th><th>In pool<br />ru-3</th><th>In pool<br />ru-6</th><th>In pools<br />ru-7, ru-8</th><th>In pool<br />ru-9</th><th>In pools<br />uz-1, uz-2,<br />kz-1</th>
          </tr>
        </thead>

        <tbody>
          <tr>
            <th>vCPU count</th><td>2–20</td><td>2–32</td><td>2–120</td><td>2–122</td><td>2–68</td><td>2–32</td>
          </tr>

          <tr>
            <th>RAM `*`</th><td>8—200 GB</td><td>8—320 GB</td><td>8–700 GB</td><td>8–700 GB</td><td>8–700 GB</td><td>8–256 GB</td>
          </tr>

          <tr>
            <th>Local disk ` **`</th><td>32 GB — 2 TB</td><td>32 GB — 2 TB</td><td>32 GB — 2 TB</td><td>32 GB — 2 TB</td><td>32 GB — 2 TB</td><td>32 GB — 2 TB</td>
          </tr>
        </tbody>
      </table>
    </CustomTable>

    `*` The vCPU:RAM ratio must be at least 1:2:

    * for clusters in the ru-6 pool;
    * for clusters in other pools, if the configuration has more than 8 vCPUs.

    For example, for 10 vCPUs, you need at least 20 GB of RAM.

    ` **` The vCPU:local volume ratio must be:

    * at least 1:32 for clusters in the ru-1 pool, if the configuration has more than 8 vCPUs. For example, for 10 vCPUs, you need a volume of at least 320 GB;
    * at least 1:16 for clusters in the ru-6 pool. For example, for 10 vCPUs, you need a volume of at least 160 GB;
    * at least 1:16 for clusters in all pools except ru-1 and ru-6, if the configuration has more than 8 vCPUs.

    If these configurations do not suit your needs, you can order a custom configuration. [Create a ticket](https://my.selectel.ru/tickets/create/) and specify the resource ratio.
  </TabItem>

  <TabItem value="network-volumes">
    <TabItemLabel>
      Network volume
    </TabItemLabel>

    <CustomTable>
      <table data-layout-fixed>
        <thead>
          <tr>
            <th />

            <th>In pools<br />ru-1, ru-2<br /></th><th>In pool<br />ru-3</th><th>In pool<br />ru-6</th><th>In pools<br />ru-7, ru-8</th><th>In pool<br />ru-9</th><th>In pools<br />uz-1, uz-2,<br />kz-1</th>
          </tr>
        </thead>

        <tbody>
          <tr>
            <th>vCPU count</th><td>2–20</td><td>2–32</td><td>2–120</td><td>2–122</td><td>2–68</td><td>2–32</td>
          </tr>

          <tr>
            <th>RAM `*`</th><td>8–200 GB</td><td>8–320 GB</td><td>8–700 GB</td><td>8–700 GB</td><td>8–700 GB</td><td>8–256 GB</td>
          </tr>

          <tr>
            <th>Network volume</th><td>32 GB — 10 TB</td><td>32 GB — 10 TB</td><td>32 GB — 10 TB</td><td>32 GB — 10 TB</td><td>32 GB — 10 TB</td><td>32 GB — 10 TB</td>
          </tr>
        </tbody>
      </table>
    </CustomTable>

    `*` If the configuration has more than 8 vCPUs, the vCPU:RAM ratio must be at least 1:2. For example, for 10 vCPUs, you need at least 20 GB of RAM.

    If these configurations do not suit your needs, you can order a custom configuration. [Create a ticket](https://my.selectel.ru/tickets/create/) and specify the resource ratio.
  </TabItem>
</Tabs>

## Processors \{#available-processors}

Available processors vary by configuration lineup. Processor frequency affects the speed of processing user requests, executing complex algorithms, and performing data operations. When a cloud server is at 100% load, the processor uses Turbo Boost technology. Since the processor is emulated, the test will show a lower frequency.

You can check the availability of configuration lineups in regions in the [Managed Databases](/infrastructure/availability-matrix.mdx#managed-databases) availability matrix.

<CustomTable>
  <table data-sticky>
    <tbody>
      <tr>
        <th>Standard, CPU, Memory</th><td>Intel® Xeon® Scalable, AMD EPYC™ <br />2.2–2.4 GHz</td>

        <td />
      </tr>

      <tr>
        <th>HighFreq<br /><small>(in the ru-9, ru-2, ru-8, and ke-1 pools)</small></th><td>Intel® Xeon® Gold 6354 <br />3.0 GHz / 3.6 GHz Turbo Boost mode</td>
      </tr>

      <tr>
        <th>HighFreq<br /><small>(in the ru-3, ru-6, ru-7, and uz-1 pools) </small></th><td>AMD EPYC™ 9474F <br />3.6 GHz / 3.95 GHz Turbo Boost mode</td>
      </tr>

      <tr>
        <th>Flex</th><td>Intel® Xeon® Scalable, AMD EPYC™ <br />2.2–2.4 GHz</td>

        <td />
      </tr>
    </tbody>
  </table>
</CustomTable>

<Formbricks />