XDA Developers on MSN

Don’t trust RAID 5 with your 20TB drives; use RAIDZ-2 instead

Unfortunately for RAID 5, there are some controllers and available guides that default to this RAID type, regardless of drive ...
How-To Geek on MSN

Please stop trusting RAID 5 for your home NAS

As useful as a NAS can be, it's also hardware that's really expensive to set up—a good NAS with several terabytes of storage might cost more than your PC did. So you definitely don't want any of those ...