I copied over a folder with my movies on it from a USB drive to my Synology 411j. All seemed to go well but when I compare the total size in finder it gives different totals. On the USB drive it shows 323 items and total size of 733.48GB. On the synology it shows the same 323 items but a file size of 730.44GB. Did some files not copy correct or are there other issues. I read that Windows and Mac's reports file sizes different with regards to how they classify a gigabyte, is something similar at work between the Synology and the Mac?