---
title: "Monitor a volume"
description: "Watch a Block Storage volume's performance, usage, and read and write operations once it is attached."
content_type: "how-to"
product: "volumes"
platform: "MyAccount"
url: "/myaccount/volumes/how-to/monitor-a-volume/"
topic: ["manage"]
relationships: {"requires":["/myaccount/volumes/how-to/attach-a-volume/"]}
---

# Monitor a volume

Volume monitoring tracks a volume's performance, usage, and read and write operations. To see
monitoring data, you first tell the node's monitoring agent to report on the volume, by adding
a user parameter.

## Before you begin

- A volume attached to a node. See [Attach a volume](/myaccount/volumes/how-to/attach-a-volume/).

## Enable monitoring on the node

On a Linux node, SSH in and add the user parameter, then restart the agent:

```bash
echo "UserParameter=mountpoint[*], grep \"/dev/\$1\" /proc/mounts | cut -f2 -d' '" >> /etc/zabbix/zabbix_agentd.conf && systemctl restart zabbix-agent
```

The user parameter tells the monitoring agent to report which device is mounted where. If you
have recently mounted the volume, wait 10 to 15 minutes for monitoring data to appear.

## View the monitoring graphs

Once monitoring is enabled and some time has passed, open the volume in the MyAccount portal to
see a graph of its performance and usage. See [Troubleshooting Volumes](/myaccount/volumes/troubleshooting/volumes/) if no graph appears.

With the charts in view, you can spot slow reads, slow writes, or a filling disk early. When the volume runs short of space, [upgrade it](/myaccount/volumes/how-to/upgrade-a-volume/).