[Yandex Cloud documentation](../../index.md) > [Yandex Cloud Stackland](../index.md) > Concepts > Cluster monitoring > Hardware monitoring

# Hardware monitoring

Certain system errors may result from hardware failures rather than Kubernetes or other components. To monitor such failures, Stackland provides a ready-made solution that collects data from various sources, such as kernel logs, `sysfs`, disk [SMART](https://github.com/Seagate/openSeaChest/wiki/Drive-Health-and-SMART) data, and more.

This page tells you where you can view hardware status alerts and key charts, and explains the conditions that trigger these alerts.

## Grafana dashboard {#dashboard-grafana}

You can monitor your hardware in a dedicated dashboard:

![Grafana dashboard](../_assets/grafana-hwm.png "Dashboard Grafana")

To open the hardware monitoring metric dashboard, open `grafana.sys.<cluster domain>` and navigate to **Dashbords > stackland-monitoring > Hardware Monitoring**.

The dashboard's first section shows hardware status warnings. For example, the first warning shown on the screenshot is **DiskIOErrors**. This check monitors disk read and write errors. You can find more checks [below](#list-of-checks-with-notifications).

The dashboard includes two charts: **Disk Temperature** and **Disk I/O Errors**.

## List of checks with alerts {#list-of-checks-with-notifications}

The dashboard shows alerts that indicate check results.

#|
|| **Check name** | **Description** | **How it works** ||
|| **DiskMissing** | Disk not found |
The system scans all available storage devices. If a previously available disk is not detected, the system logs a `DiskMissing` error.
||
|| **DiskIOErrors** | Disk read/write errors |
During read and write operations, the system and disk controller exchange data. If read or write issues occur, the system logs `DiskIOErrors`.
||
|| **DiskSmartFailed** | Disk SMART failure |
If a SMART attribute exceeds the threshold defined by the disk manufacturer, the system logs a `DiskSmartFailed` error.
||
|| **DiskSmartUnavailable** | Disk SMART failure |
If the disk's SMART stops working and no longer reports hardware status data, the system logs a `DiskSmartUnavailable` error.
||
|| **DiskConnection** | Connection issues |
SMART attribute 199 shows the number of corrected errors during SATA data transfer. A growing value can signal cable, connection, controller, or disk issues. If the attribute value rises, the system logs a `DiskConnection` error.
||
|| **DiskTemperatureCritical** | High disk temperature |
SMART-enabled disks monitor their temperature and report it to the system. If the temperature approaches the maximum allowed value, the system logs a `DiskTemperatureCritical` error.
||
|#