Comment by consp

> Can you actually saturate the links with the spinning drives?

I can mostly saturate my toy 100gbit link with it on read (to memory, since the other side also needs to not be the problem). Just for as long as it's already in the ZFS cache (which can be huge with in the hundreds GB of ram in servers in general). Not in practice since when you hit the disks you take a massive penalty, but then again, it can be done.