Downloading all updated data from IBM COS

and found something not right.

A video file gives 5000+ errors when checking with ffmpeg, looks like I lost several minutes of that file, rest of them are ok.

Not sure how reliable IBM Aspera© is, since I'm not sure when that file is being corrupted. I downloaded that file around 2014, and save it to my hard drive, then uploaded to Google drive, storing about 3 years, then I downloaded from google and uploaded to IBM cloud.

Keeping some important data safe from a long time interval, actually is not a easy job.