What is the difference between hardware RAID and software raid?

We have explained what raid is and the two types of raid, today we want to discuss the difference between hardware raid and software raid, as many users have been confused by them. Brief introduction about Hardware RAID The hardware-based system manages the RAID subsystem independently from the host and presents to the host only a single disk per RAID array. An example of a Hardware RAID device would be one that connects to a SCSI controller and presents the RAID arrays as a single SCSI drive. An external RAID system moves all RAID handling “intelligence” into a controller located in the external disk subsystem. The whole subsystem is connected to the host via a normal SCSI controller and appears to the host as a single disk. RAID controllers also come in the form of cards that act like a SCSI controller to the operating system but handle all of … Continue reading