Subj : Re: Stress testing a Pi...
To   : Dr. What
From : The Natural Philosopher
Date : Sat May 11 2024 15:17:41

On 10/05/2024 18:10, Dr. What wrote:
> -=> The Natural Philosopher wrote to All <=-
>
>   TNP> And I think I can confirm that a Pi4 cannot drive three SSDs over USB
>   TNP> unaided.
>
> I found that out a long time ago when I set up my Raspberry PI4 based NAS.
>
>   TNP> My tentative conclusion, which I would like some opinion on, is that it
>   TNP> is the USB power limit that is causing the problems, not the overall
>   TNP> power draw. As that would have bee relieved by removing the TV hat.
>
> It's the power draw.

That is ambiguous.
USB power draw or total power draw?


>
> On other Pi projects, I used multiple flash drives and had no problems.
>
> But my NAS project used 2.5" SATA drives with SATA-to-USB adapters - which will
> certainly draw more power.  And I couldn't get more than one to work directly
> connected.  I ended up getting a powered USB hub for all 4 drives in my NAS.
>
Two work OK here.  Just not three.

Remember all drives are not created equal consumption wise.


>
> ... I tried to drown my sorrows, but they can swim.
> ___ MultiMail/Linux v0.52
>

--
“It is dangerous to be right in matters on which the established
authorities are wrong.”

― Voltaire, The Age of Louis XIV

--- SoupGate-Win32 v1.05
 * Origin: Agency HUB, Dunedin - New Zealand | Fido<>Usenet Gateway (3:770/3)

.