NAS 4x2.5HDD/SSD Raspberry Pi

I really like the design of the source model, but unfortunately it is only suitable for standard 2.5-inch SATA SSDs (7mm perhaps), and most HDDs are thicker than that size. Therefore, I made simple modifications to the model to accommodate most 2.5-inch HDDs (common 9.5mm thickness). Of course, it is still suitable for 7mm HDD/SSD.BTW, I also added a version without the positioning holes to make it suitable for other uses.