Backup and restore features are built into the jPC's operating system and provided through the following utilities:
dd - For full disk image backups. Slow and inflexible, but will produce bit-for-bit clones of disks.
sfdisk - For partition table backups (i.e. dumps) and restores.
fsarchiver - For partition file system backups and restores. Fast and efficient.
parted - Used primarily for growing the last partition to utilize the storage device's full capacity.
resize2fs - Used primarily to expand the last partition's file system to utilize the full partition's capacity.
Any or all of these utilities can be used from a terminal to backup, restore, clone, and/or provision your jPC panel PC devices in whatever way suits your use case.