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explain like I’m 5: what is RAid 5?

RAID 5 is a way to store data across multiple hard drives. It uses three or more drives and combines them to act as one. The cool thing about RAID 5 is that it spreads out data and what’s called “parity” information across all the drives. This “parity” is like a safety net. If one drive fails, you don’t lose any data. You can replace the failed drive, and the system will rebuild the lost data using the parity information from the other drives. So, you get a balance of good performance, decent storage space, and data protection. But remember, if two drives fail at once, you’re out of luck!