RAID helps prevent data loss in the event that a drive failure occurs before changes are replicated to backups. If you upload photos and then delete them from your camera, they will likely be stored in just one location for a period of time. If you have a drive failure without RAID, you could lose your only copy.
With ZFS, RAID can be used to protect against things like bitrot. Even data at rest can become corrupt over time. ZFS stores checksums of the files to know if corruption occurs. And with one or more parity drives, ZFS can automatically repair the corruption when detected. Without this, detecting and fixing these kinds of issues can be much more difficult.
I’m in 100% agreement that RAID is not essential, and that backups are a much higher priority. In fact, without backups in place, I’m not generally in favor of RAID. RAID adds additional complexity. That complexity can result in data loss. Especially due to user error. But once backups are part of the equation, RAID can add additional layers of security for your data.
True
Not true.
I’m in 100% agreement that RAID is not essential, and that backups are a much higher priority. In fact, without backups in place, I’m not generally in favor of RAID. RAID adds additional complexity. That complexity can result in data loss. Especially due to user error. But once backups are part of the equation, RAID can add additional layers of security for your data.