[For those who stumbled on RAID1 in the Fundamentals of IT Exam] Solving Spring 2017 Question 11 using class notes

I didn't understand why 'only half of the purchased disks can be used'I stumbled on just one sentence in the RAID1 ...

[For Teachers] "Smart Note": A Handwriting Notebook You Can Use Without Registration | Pen, Text, and Stamps in One File (HTML Included)

In math class, I want students to draw fractions in their notebooks. While tablets are available, I get stuck at the stage of ...