This is a question from a MCSE book
You administer a server called Server1 which has a single physical disk that is configured as a simple volume
You plan to store the files for a large database on the server. You plan to install additional physical disks on the server
You need to configure the disks on the server so it provides fault tolerance for the operating system and the database files.
The answer says install 3 additional disks and create a new RAID-5 volume, and place the database files on the new volume
Install another disk and configure the simple volume as a mirrored volume
My question is: - Why three extra disks for the RAID-5,
Why do u need the Additional disk for the mirrored volume