Standard RAID levels - Wikipedia
In computer storage, the standard RAID levels comprise a basic set of RAID ("Redundant Array of Independent Disks" or "Redundant Array of Inexpensive Disks"...
RAID - What Is RAID? And Setup Guide For First Timers
RAID-10: Combining RAID-0 and RAID-1 is often referred to as RAID-10, which offers higher performance than RAID-1 but at much higher cost as it requires a minimum of four disks.