Amazon S3 has 5 GB object size limitation. Can you backup files larger than 5 GB to S3?
Amazon limitation of 5GB is for size of the object that gets stored on S3. ZCB splits large files, e.g. 40 GB database, into multiple chunks (objects). Each chunk is within Amazon size limits and ZCB assembles the chunks back when you recover your files. In effect, Amazon S3’ 5 GB limit is completely transparent to you.