Administration & Maintenance - Backup & Restore
Luna HSMs have onboard volatile memory meant for temporary data (disappears when power is removed), and onboard flash memory, used to store permanent material, like PKI Root keys and other critical key material, and like the firmware that makes the device work.
No electronic storage is forever. If your Luna HSM is operated within an ambient temperature range of 0 degrees Celsius to +40 degrees Celsius, or stored between -20 degrees Celsius and +65 degrees Celsius, then (according to industry-standard testing and estimation methods) your data should be retrievable for twenty years from the time that the token was shipped from the factory. This is a conservative estimate, based on worst-case characteristics of the system components.
What does this mean to me?
Advances in technology will probably ensure that you never need to test the expected expiration of data on your Luna HSMs.