TrueNAS ZFS-Snapshot Replication without ECC

[Vertax]

Hello there!

First of all, sorry for my bad englisch german native here :)

I have a question about ZFS-Replication, perhaps someone have some infos.

I have a Main-Storage System with ZFS and ECC RAM, the Second-Storage-System is running ZFS without ECC.

In my opinion it's ok to run the second storage system without ECC, because the Main System have.

The Second System is only for storing zfs-snapshot-replication as Backup

Since i'm safe against bit root on my main storage after the data are writen to disk there is no chance to transfer corrupted data on my second storage system even without ecc on the second system.

If i have a bit-root in ram on the second system while replication, zfs would check the different parity and resend it.

Do I have a flaw in my thinking?

 

[Ericloewe]

Since i'm safe against bit root on my main storage after the data are writen to disk there is no chance to transfer corrupted data on my second storage system even without ecc on the second system.

It could be corrupted on arrival.

If i have a bit-root in ram on the second system while replication, zfs would check the different parity and resend it.

Sort of, you'd need to fix it manually. The specifics would depend on just what happened exactly.