Go to Settings > System > Storages The USB key you have inserted into the PBX serves to store such data as Voicemail messages, call recordings, faxes, CDR, CTI data, etc.
It is recommended to store the Backups on another USB drive or on a Windows / NFS Share, to be able to restore the system in case of the primary USB drive’s failure. The first section “Storage Device” displays the storage devices mounted at the system startup with the relative table of the partitions and the usage of the specified partition.
Click “Initialize” (under “Action” column) to start the partition and formatting procedure of the storage device.
Click “+” (under “Action” column) to add a partition.
Click “+” (under “Windows Share” or “NFS Share”) to add a storage server.