This means that ECC RAM and ZFS are completely orthogonal concerns.
If your data is important enough to warrant ECC RAM, you should get ECC RAM whether you use ZFS or not.
If you want to use ZFS (for its volume management, compression, mirroring, healthchecks, whathaveyou), you should do so whether or not you have ECC RAM.
If your data is important enough to warrant ECC RAM, you should get ECC RAM whether you use ZFS or not.
If you want to use ZFS (for its volume management, compression, mirroring, healthchecks, whathaveyou), you should do so whether or not you have ECC RAM.