Software RAID is a form of RAID (redundant array of independent disks) performed on the internal server.
RAID is a data protection method that spreads data on multiple hard disks, balancing overlapping I/O operations, improving performance and increasing the mean time between failures. RAID can be in the form of hardware or software, depending on where the processing occurs.
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For software RAID, data is configured in the host server CPU. Hardware RAID uses the internal motherboard or a separate RAID card.
Because it processes on the internal server, software RAID is slower than hardware RAID However, because hardware RAID requires purchasing additional hardware, software RAID costs less.