3 ms·
but RAID is still only a single copy of your data Btrfs has 3-copy and 4-copy RAID1 (profiles raid1c3 and raid1c4), doesn't ZFS have something similar?
by tremon 3y ago
but RAID is still only a single copy of your data
Btrfs has 3-copy and 4-copy RAID1 (profiles raid1c3 and raid1c4), doesn't ZFS have something similar?
- 8fingerlouie 3y agoZFS has RAIDZ1, RAIDZ2, RAIDz3 and Ditto blocks, which do much the same thing, although a bit differently. My point was that even if you have 4 copies of your data, you still only have a single machine where your data is stored, and you're essentially just one flood/lightning strike/house fire/burglary away from all of it being gone. Or one bad power supply away from 4 dead drives. With versioned backups, you have higher latency on restoring data in case a disk dies, but your data is also safer. As i initially stated, RAID is for availability. It is great for making sure that data is available 24/7, but that is rarely what the average home user needs. Most home users access their data infrequently, and would be perfectly fine waiting a couple of hours while restoring data from a backup.