As reported by IGN, players with early access to the game's single-player campaign found that the total file size for Call of Duty at installation which also includes the Modern Warfare II campaign, Warzone, and Call of Duty HQ now comes in at 234.9GB on PlayStation 5.
The game's minimum system requirements are provided below, and are quite low for a modern PC game: Processor: Intel Core 2 Duo E6600 / AMD Phenom X3 8750 or better. Memory: 2GB RAM. Hard Drive: At least 12 GB of free space.