I recently installed Ghost 15. It seems to have created a subdirectory on my storage destination (an external BlackArmor 440 NAS) called "Our Videos", and inside said directory are numerous files named "rpam_store_XX.dat" where the XX are incrementally increased by 1 (for example, rpam_store_1.dat, rpam_store_2.dat, rpam_store_3.dat. etc.). What are these rpam_store.dat files? Are they all necessary or can some or all of them be deleted?