2.請說明 RAID (Redundant Array of Independent Disks) 磁碟陣列的觀念，並介紹五種不同的 RAID 類別。（10 分）

一、Peter is an American who would like to file a patent application to our Intellectual Property Office, and he wonders whether he should apply for the invention patent or utility model (new model) patent. You are a patent attorney. How would you explain to him the distinction between the invention and utility model under our Patent Law?（20 分）