[bitL]

Depends. If a bit is flipped in a dataset you are likely fine, if in code your computation might crash. If you use enterprise-grade software like ZFS filesystem that keeps a lot in memory, it's much better to have ECC and accept a bit slower memory access for a bit better protection.

[OoooooooO]

ZFS without ECC is pretty useless ...

[michaelmrose]

ZFS is no more vulnerable to corruption when running without ECC than any other file system.

The developers of zfs suggest ECC because ECC is a worthwhile thing for those who care about their data.

You should stop spreading misinformation.