What is the minimum number of nodes? 06/02/2017 – by Mod_GuideK 0 In an Isilon cluster for N+2 protection, what is the minimum number of nodes? A. 3 B. 5 C. 6 D. 9 SHOW ANSWERSCorrect Answer: B Explanation/Reference: Download Printable PDF. VALID exam to help you PASS.