Raspberry Pi5 OMV and Plex issues

Hi

I'm new here. I built my small NAS with Raspberry Pi5, Radxa Penta SATA HAT and 4 SSD drives.

All works fine as far as OMV goes and regular NAS funcionality.

Not sure if this is RPi issue, OMV issue, Radxa Penta SATA HAT issue or Plex issue.

So I'm starting here on this forum.

When I start playing any movie from Pi-bsed NAS Plex (computer, TV, Apple TV - doesn't matter where) it plays for 5 or 10 sec and then it shuts down the Pi. Then to use Pi-NAS I have to start it again - luckily Pi 5 has a "power" button so easier here.

Logs that are available on my OMV NAS local portal are lost after the Pi shuts down unexpectedly - especially Kernel ones.

Did anyone have the same problems?

Again - if this is not an OMV issue - I will move it to Pi or Plex forums then.

Thanks

OK.

So my power supply is beefy enough - 43 W.

But I discovered by watching syslog in real time while playing a movie via Plex from my RPi5 OMV Plex mini NAS and indeed there were some issues with the voltage delivered to CPU.

When I was using it as a storage - just copying files or pulling files from the NAS, all was fine.

When Plex went into the play - 43W power supply through Pi wasn't enough - it is not that it is now powerful enough.

After I connected 12V through Raxda hat - all the problems disappeared.

And this 12V power adapter is 24W so substantially less that USB-C RPi power supply.

It wasn't consistent with crashing my Pi that's why it was odd. And again as a NAS with just file transfer it worked for weeks just fine with no crashing.

Thanks all for replying to this thread.

OK

To cut the conversation short

I was powering my Pi via USB-C 47W power supply - totally fine event with Radxa HAT.

Documentation says it is "recommended" but they do not say it is crucial or you must power your Pi and HAT via 12V input or MOLEX. It is not.

Quote from Soma

According to Radxa, you should power the system ONLY via the HAT.

I don't see Radxa documentation saying I "should power the system ONLY via the HAT" - it clearly says there is no need to power SBC separately when you power the HAT.

When used with Raspberry Pi 5, it supports three power supply modes to adapt to different usage scenarios:

• Use a Type-C adapter to power the Raspberry Pi 5
• Use a DC 12V adapter to power the Penta SATA HAT
• Use a D-shaped 4PIN from an ATX or SFX power supply to power the Penta SATA HAT

Of course it depends what disk are you using - HDD or SDD. Mine are SDDs.

In my case all things put together were pulling less than 47 W so I did not overload the power supply.

The point of my forum question was because I was using this NAS for a long time with ZERO issues just for files transfer but started having issues when I added Plex to this NAS. That's why it was confusing. Power consumption was OK, CPU utilization not crazy (around single digits to 20-ish), RAM - not exceeding 1-2 GB out of 8GB.

Also I do't call myself lucky because I did read the Radxa documentation.

And again - I consider this topic closed since I know what happened and I found the fix.

Thanks again for all the input.