You should only invest in high-end RAID hardware when you frequently deal with operations like video editing and large databases. Redundant power supplies are a common feature in server hardware.
This does mean an entire drive is reserved for parity, cutting overall capacity by half, but allows for quick recovery should a drive fail in the RAID. It's a good pick for a dual-bay server if ...
Ashkitha Sriraman, a computer science professor at Carnegie Mellon that is involved in the program, notes that it is not uncommon for an entire server to ... and used RAID striping to deal with ...