This section allows you to monitor your Exchange Online, Azure Active Directory, OneDrive for Business, Skype for Business, and other Office 365 services 24x7. It also constantly monitors the health of your cloud setup and notifies you immediately about any service outages.
You need to configure the number of days for which the monitoring data must be retained, for better disk space management. Once configured, the data older than the retention period will be automatically deleted.
Steps to configure the retention period: