---
title: "Disk partitioning in Managed Kubernetes on dedicated servers"
sidebar_label: "Disk partitioning in a cluster on dedicated servers"
sidebar_position: 14
description: "General information about disk partitioning in a Managed Kubernetes cluster on dedicated servers: which disk is partitioned, which partitions are created, default values, and limits"
---

import Formbricks from '@theme/MDXComponents/Formbricks';
import { CustomTable } from '@selectel/docux/components';

# Disk partitioning in Managed Kubernetes on dedicated servers

In a Managed Kubernetes cluster on dedicated servers, only one disk type is partitioned automatically — the one with the highest performance. Disk types, ordered from highest to lowest performance: SSD NVMe ⟶ SSD SATA ⟶ HDD SATA.

The disks in the cluster are combined into a RAID1 — all data is written to two physical disks in the RAID array simultaneously. Both disks in the array are partitioned.

The following partitions are allocated by default: root partition `/`, `/boot` and `/storage`.

You can only change the disk partitioning when [creating a cluster](/managed-kubernetes/create/create-dedicated-cluster.mdx). You can opt out of the `/storage` partition and change the size of the root `/` partition. The list of partitions and information about their default sizes and value limits can be found in the [Disk Partitions and Their Size](#disc-partitions-and-their-size) table.

In an existing cluster, you can view the disk partitioning in the [control panel](https://my.selectel.ru/mks/): in the top menu, click **Products** and select **Managed Kubernetes** → cluster page → **Cluster Nodes** tab → click the node name → **Operating System** tab → **Partitioning** field.

## Disk partitions and their size \{#disc-partitions-and-their-size}

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    <thead>
      <tr>
        <th />

        <th>Default size</th><th>Minimum size</th><th>Maximum size</th>
      </tr>
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    <tbody>
      <tr>
        <th>/</th><td>100 GB</td><td>30 GB</td><td>Calculated using the formula: disk size (in GB) - 1 GB for the `/boot` partition - 1 GB for the `/storage`</td>
      </tr>

      <tr>
        <th>/boot</th><td>1 GB\*</td><td>1 GB</td><td>1 GB</td>
      </tr>

      <tr>
        <th>/storage</th><td>Calculated using the formula: disk size (in GB) - 1 GB for the `/boot` partition - 100 GB for the `/storage`</td><td>1 GB</td><td>Calculated using the formula: disk size (in GB) - size of the root `/` partition - 1 GB for the `/boot`</td>
      </tr>
    </tbody>
  </table>
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`*` The size of the `/boot` partition cannot be changed.

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