When selecting a RAID configuration you want to look at what data will be stored, budget and performance requirements.

• RAID 5
• You would want to use a RAID 5 configuration when you are setting up a server that will be hosting backups. This configuration will give you the maximum storage, budget in mind and ability to loose a single hard drive.
• RAID 10
• This configuration will be the default for running any production workloads such as databases, file servers, applications, etc. As it will provide the ability to lose a maximum of two drives in the RAID and continue functioning properly. The cost will be higher as you will need additional drives.