There are 8 disks in total, [1/8] through [8/8]. They're obtained from Reverse Engineering looted space components, and allow you to create a schematic for the KSE Firespray. To create the schematic, all 8 disks are required. The disks are then put into the component analysis tool, and reverse engineered to make the schematic. The schematic has 3-6 uses, generated randomly.