Drobo and Premiere Corrupted Mp4 file

I am editing a wedding off my Drobo with Adobe Premiere and a MP4 file became corrupted. Luckily I had it backed up and I replaced the file but it’s scary that a file would just randomly get corrupted. I’ve had this happen once before years ago. There hasn’t been any power outages or any disconnections to damage the file. Just one day it showed lots of blocky artifacts. Any ideas? I’m worried my drobo could be corrupting other files on the drive.