The zimablade looks interesting: 2 sata on board and a full pci-e slot, Intel quad cpu, fanless.
When will we get a Pi for storage that doesn't need to use usb?
Edit: i took a look at the zimablade in spite of the atrocious web 5.0 site with silly animations getting in the way of getting to the specs.
Nice. 2 x gigabit ethernet when?
Yes. It's all I could get at the time. I chose zfs to allow me to move disks to true sata over pci when I can.
The 5 appears to allow a pci bridge to be used. It's possibly my next move, I've had the radxa hat for a couple of years now.
Off the shelf options tend to have awful software, pis have good power consumption, and as of the 5 is it really underpowered?
As for being underpowered, again it depends what you are doing with them. For my NAS (basically long-term storage of stuff I don't access much and tiemmachine backups) there would be plenty of CPU, the biggest problem would be memory.
*edit* Just to be clear, the Pi has some massive drawbacks as a NAS at present because of it's significant lack of disk IO, but there's nothing inherent in it's form factor that makes it a bad NAS. If I could have plugged 2+ HDs into one in a performant way I'd likely have done that rather than the Dell Optiplex shenanigans.