On 2017-03-07, alexmcwhir...@triadic.us <alexmcwhir...@triadic.us> wrote: > softraid / regular hardware raid does the same checksumming, ZFS just > implements a ton of extra nice features such as snapshots, compression, > cow, etc... at the cost of a large amount of RAM. It's probably safe to > say we will never see it in OpenBSD with it's current license unless > someone can make it work in ports which is unlikely as it needs a ton of > kernel support.
A couple of comments on this: - RAID1 doesn't do checksumming. You don't know which of the copies is correct. - Hardware RAID doesn't give you any protection against bad controllers. - ZFS *does* checksum, even on mirrors, and can pick which of a pair of mirrored drives is good and use it to correct the other one.
