zip/rar wont corrupt easier than any other filetype i guess, except obviously if you have 100 separate for example photos and 1 gets corrupt youve lost 1 photo
if you had all those 100 photos in 1 zip, and that zip somehow became corrupt, then yes thats lost
you could create recovery files using something like quickPar
QuickPar for Windows which creates parity / recovery to protect against corruption etc.
(winrar has the option for inbuilt recovery i belive)
as long as you have healthy hard drives, and dont suffer frequent power outages and perform regular backups of these files, youll be fine.