4 ms·
Doesn't ZFS perform checksumming and error correction on that data to make sure that memory or disk issues don't get affected by corruption? I thought that was
by rightos 9y ago
Doesn't ZFS perform checksumming and error correction on that data to make sure that memory or disk issues don't get affected by corruption? I thought that was a main reason to use it.
- milcron 9y agoWell right. It protects against silent bitrot on the hard drives. But it does this by caching and checksumming in RAM, so now you need to defend against bitflips in RAM. It's not that ZFS without ECC is completely unsafe... it's just not as safe as it could be. ECC RAM becomes the next biggest concern once you've addressed on-disk bitrot.