If there is no internet connection available for the edge gateway, your data is not lost. The edge gateway will then continue logging data and can store it locally for months at a time, depending on how much data you log. This data is locally not accessible. Once the internet connection has been restored, the logged data will be sent to the cloud.

We are unable to provide an exact number for you, because this depends on numerous factors, including a compression algorithm that may compress your data more efficiently over time.

However, you are able to estimate how much storage you may need with the following formula:

Data storage (in bytes) = Total data points per hour x 8760 (hours in a year) x Retention policy (in years) x 4.85 (average bytes per data point)

Notes:

• This formula will only provide an estimate.
• "Total data points per hour" is the amount of points that are logged per hour across all of your IXON edge gateways. For example, if you’re logging 1 tag every minute on 25 devices, that amounts to a total of 1 x 60 x 25 = 1500 data points per hour. No distinction is made between data types.
• "Retention policy" is a configuration option in your tags and determines how long the data will be stored in the cloud. The default is 5 years.
• The average bytes per data point of 4.85 bytes is determined across multiple databases with multiple different data types. The lowest observed was ~2 bytes per data point and the highest was ~10 bytes per data point.

Take, for example, a use case where you estimate that 50 tags are logged every minute on 25 devices and where the retention policy is 5 years. The "Total data points per hour" is then 50 x 60 x 25 = 75000. Using that in the above formula then yields:

Data storage (in bytes) = 75000 x 8760 x 5 x 4.85

Yes, there are multiple methods to export your data.

You can export your logged data per device, using an export component, as explained here: Export your data.

You can also export the data using your own methods with direct database access, if you are experienced and familiar with InfluxDB. See "Can I get access to the database?" below for more information.