---
title: "Scale 1C server cluster"
sidebar_label: "Scale 1C server cluster"
sidebar_position: 5
description: "How to change the cluster configuration, increase the number of vCPU, RAM, or local disk size"
---

import Formbricks from '@theme/MDXComponents/Formbricks'

# Scale 1C server cluster

:::warning

During 1C server cluster scaling, all associated info-bases may be temporarily unavailable.

We recommend planning maintenance for times of minimal cluster load and [using session locks](/cloud-1c/infobase/manage-infobase-user-sessions.mdx#set-lock) for associated info-bases.

:::

When scaling, you can:

* change the [configuration](/cloud-1c/about/configurations.mdx#cluster-configurations);
* change the line — from Standard to HighFreq and vice versa;
* change the number of resources in the current fixed or custom configuration — vCPU, RAM, and network volume size. The number of vCPU and RAM can be decreased or increased, but the disk size cannot be decreased.

1. Optional: [set session locks](/cloud-1c/infobase/manage-infobase-user-sessions.mdx#set-lock) for the duration of the work.
2. In the [Control panel](https://my.selectel.ru/ones/server), from the top menu, click **Products** and select **Managed 1C Cloud**.
3. Go to the **1C Server Cluster** section.
4. In the cluster row, check its status — if the cluster is in the `MAINTENANCE` status, it is undergoing technical maintenance and is unavailable for scaling. Wait for the maintenance to complete. Read more in the [Maintenance window](/cloud-1c/cluster/maintenance-window) instructions.
5. Open the cluster page.
6. Click **Scale cluster**.
7. Select the [configuration](/cloud-1c/about/configurations.mdx#cluster-configurations). The number of vCPU and RAM can be increased or decreased, but the disk size cannot be decreased.
8. Specify the required amount of resources. The cluster uses 90% of the selected resource volume; the remaining 10% is reserved for the Apache web server, which handles web publications of info-bases.
9. Click **Save**.
10. Optional: if you set session locks in step 1, [remove them](/cloud-1c/infobase/manage-infobase-user-sessions.mdx#remove-lock).

<Formbricks />