Subj : Re: Stress testing a Pi... To : The Natural Philosopher From : Theo Date : Sat May 11 2024 17:18:10 The Natural Philosopher wrote: > On 11/05/2024 14:54, Theo wrote: > > The Natural Philosopher wrote: > >> So I am thinking of going to a PI 5 rather than a separately powered USB > >> adapters for the drives - the other way to increase power to the drives. > >> > >> Or is there a better one board computer alternative? > >> > >> I want to build everything into a small 19" case with an ethernet switch > >> board and OSUs to reduce clutter > > > > If you want a Pi5 NAS, this looks like a good option: > > > > https://www.youtube.com/watch?v=l30sADfDiM8 > > > > Key part is the Radxa PCIe to 5x SATA HAT: > > https://arace.tech/products/radxa-penta-sata-hat-up-to-5x-sata-disks-hat-for-raspberry-pi-5 > > > > (For 3.5" drives, there are cables so you can mount them away from the > > board. USB HDD often have a SATA connector inside if you remove the > > case) > > > That may be an option all right - it takes external 12V which I can > probably supply. > And there is one for a Pi 4... I think the Radxa Pi4 one was released just before all the supply chain mayhem when nobody could buy Pi 4s - I think they discontinued it so I'm not sure it's actually available right now. On the Pi 4 you have to use USB rather than PCIe, unless using a Compute Module (when you lose USB3). I'd expect PCIe to be more stable under load than USB. They use a JMB585 PCIe to SATA chip which isn't enterprise grade but seems to work well enough. Since Pi5 doesn't lose USB3, you can get 2.5G networking via a $10 USB adapter, rather than Jeff's odd PCIe switch. The Pi4 was just a bit compromised for this use case IMO, but it looks like the Pi5 plus this HAT gets most things right. Theo --- SoupGate-Win32 v1.05 * Origin: Agency HUB, Dunedin - New Zealand | Fido<>Usenet Gateway (3:770/3) .