DAEMON Tools Lite allows you to emulate up to 4 DT, SCSI or HDD devices. In order to maximize the number of virtual drives emulated simultaneously, activate Unlimited Devices feature.
Note that SCSI and IDE functionality is limited in Windows 10.
Activated Unlimited Devices features allows you to emulate up to 256 DT and HDD devices, 32 SCSI devices and 4 IDE devices.