For new sysadmins wondering about comments like "hardware raid is dead" its pretty simple. Using BSD or linux softraid is a trivial CPU overhead in 2025 and insulated you from the risk of a proprietary controller failing past the warranty support of your hardware. You simple swap disks to a new chassis. With hardware raid you could be left scouring eBay at 3am for a new old raid card, and even if you find one, theres no guarantee it will find your raid in the disks.