The first step:

Please access the link below and follow the instruction beginning with the " First setup of Syneto Storage OS" section:

https://helpdesk.syneto.eu/a/solutions/articles/11000048888-installation-guide

The second step:

You will have to add the license and here's how to do it:
https://helpdesk.syneto.eu/a/solutions/articles/11000031480-how-to-add-licenses-on-synetoos

The last step:

Please take a look at the section "Importing a disk pool". 

You will find the guide to proceed in order to effectuate the import. 

https://helpdesk.syneto.eu/a/solutions/articles/11000050585-disk-pools