[Yandex Cloud documentation](../../index.md) > [Monium](../index.md) > FAQ > Alerts / notifications

# Alerts/notifications

#### How can I reduce the number of false alerts? {#reduce-false-alerts}

You can increase the [evaluation window](../../monitoring/concepts/alerting/alert.md#evaluation-window) or change the [aggregation function](../../monitoring/concepts/alerting/alert.md#aggregation) in the [alert](../../monitoring/concepts/alerting/alert.md#alert-parameters) settings.

#### What value should I specify as a threshold? {#threshold-values}

The threshold value is set in units of the selected metric.

For example, the free disk space threshold for a database cluster is specified in bytes. You can simply set a threshold by moving the slider on the chart with real data. Make sure the **Warning** threshold value does not exceed that for an **Alarm**.

#### How do I set an alert recipient? {#alert-recipient}

You can use the following supported [notification channel](../../monitoring/concepts/alerting/notification-channel.md) methods:

* `Email`.
* `SMS`.
* `Push notifications` (in the Yandex Cloud [mobile app](../../overview/mobile-app/index.md)).
* `Telegram`.
* `Cloud Functions`.

Specify a Yandex Cloud account as the recipient of email notifications. This can be the owner's account or an [additional one](../../iam/concepts/index.md#accounts), e.g., a federated account or Yandex ID, created specifically for this purpose.

#### I do not receive any alerts. Why? {#alert-receive-failed}

Check your [notification channel](../../monitoring/concepts/alerting/notification-channel.md) account email address and phone number.

To get notifications, the user must:

* Have the `monitoring.viewer` role for the folder with the configured alert.
* In the management console [settings](https://console.yandex.cloud/settings):
    * Enable **Monitoring**.
    * Specify an email address, phone number, and Telegram account or group.

#### What should I do if there is no data? {#alert-no-data}

If there is no data, you will see the timeline for the last hour. To see the data, change the [evaluation window](../../monitoring/concepts/alerting/alert.md#evaluation-window) time to include the most recent point.

If there are no function errors, no data will be displayed. For more information, see [No data policy](../../monitoring/concepts/alerting/alert.md#no-data-policy).