> For the complete documentation index, see [llms.txt](https://support.portsip.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://support.portsip.com/v16.x-maintenance-mode/high-availability-v16.x/high-availability-and-scalability-on-aws/increase-size-of-ebs-volume.md).
# Increase Size of EBS Volume
With the growth of your business, there might be a need to increase the size of your [EBS ](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/AmazonEBS.html)volume. This would allow your PortSIP PBX HA to support a larger number of users, process more calls, and store more recording files. This guide provides step-by-step instructions on how to increase the size of an AWS [EBS ](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/AmazonEBS.html)volume.
## Prerequisites
* The PortSIP PBX HA must be successfully configured as the article: [High Availability Installations on AWS](/v16.x-maintenance-mode/high-availability-v16.x/high-availability-and-scalability-on-aws/high-availability-installations-on-aws.md).
## **Back-up EBS**
Before you proceed with increasing the size of your EBS volume, it's recommended to create a snapshot of the EBS. This will back up your PBX data, providing a safety net that allows you to roll back if any issues arise during the resizing process.
Please follow the below steps to process.
* Sign in to the AWS EC2 console.
* In the navigation panel, select **Elastic Block Store**, and choose **Volumes**.
* Find the volume that is being used in HA and select its checkbox.
* Click on **Actions**, then select **Create snapshot**. In the **Description** field, enter **pbx-ha-volumes-backup**.
* Click on **Create snapshot**.
## Increase Size of EBS Volume
Please follow the steps below to increase the EBS volume size to **2000GB** as an example:
1. Sign in to the AWS EC2 console. In the navigation pane, select **Elastic Block Store**, then choose **Volumes**.
2. Find the volume that is being used in HA and select its checkbox. Click on **Actions**, then select **Modify volume**.
3. The **Modify volume** screen will display the volume ID and the current configuration of the volume, including type, size, input/output operations per second (IOPS), and throughput.
* For the **Volume type**, do not change the value.
* For **Size**, change it to 2000 GB.
* For **IOPS**, do not change the value.
* For **Throughput**, do not change the value.
4. Click on **Modify.** When prompted for confirmation, choose **Modify** again.
## Extend the File System
Perform the below command on the PBX HA EC2 instance **ip-172-31-16-133** only.
```
cd /opt/portsip-pbx-ha-guide && /bin/bash extend.sh run -s disk-only
```
---
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