Theoretically possible but I can't speak for the Pi5 or that HAT.
I've a CM4 based NAS that uses an ASM1184e PCIe switch to drive a pair of ASM1062 based four port SATA cards which drive five HDDs. The whole lot is powered from an ATX PC PSU.
If your 12V supply and cables can handle the required current a single PSU should be enough.
There are caveats though:
[shameless self promotion]
If you need help with the NAS setup see Building A Pi Based NAS
[/shameless self promotion]
I've a CM4 based NAS that uses an ASM1184e PCIe switch to drive a pair of ASM1062 based four port SATA cards which drive five HDDs. The whole lot is powered from an ATX PC PSU.
If your 12V supply and cables can handle the required current a single PSU should be enough.
There are caveats though:
- The Pi5 (and CM4, CM5) cannot boot from a SATA drive.
- There is only a single PCIe lane available and it's only rated for gen2.
- It can be pushed to gen3 but the PCIe switch needs to support that. If it doesn't you'll still only get gen2 speeds.
- Bandwidth per (active) drive won't be great but given the Pi5 only has 1Gbps ethernet that may not turn out to be much of an issue.
- You'd get more bandwidth per drive by spreading them across the Pi5's two USB3 ports (the RP1/USB controller has four lanes back to the SoC). Plus you can boot from USB.
[shameless self promotion]
If you need help with the NAS setup see Building A Pi Based NAS
[/shameless self promotion]
Statistics: Posted by thagrol — Sat May 03, 2025 5:29 pm