redundancythe inclusion of extra components in a system as a backup in case of failureData centre redundancy ensures that services remain available even if one server goes offline.NoteData centre redundancy ensures that services remain available even if one server goes offline.Elon.io is an online learning platformWe have an entire course teaching IELTS Vocabulary — Band 7+ grammar and vocabulary.Start learning IELTS Vocabulary — Band 7+ now