I hope this is the right place to post this because this is the same situation that I am dealing with right now. I have been trying to move my existing Unraid server to completely new hardware and am running into an issue. First some background: I have been using Unraid for a total of six months. I have built multiple PCs over many years, starting in the early 2000s. At the end of last year I got tired of paying for streaming services so I researched starting a Jellyfin server, which I was able to do thanks to Unraid. I started using an HP AIO to see how easy it was going to be, then transferred everything to a Dell Optiplex with a SATA SSD 500GB as cache and a three bay DAS for my parity disk and two 2TB drives. Interestingly, this hardware change did not cause any issues. I knew that I did not have much of an upgrade path using that hardware, but it was what I had around to start with. I got Jellyfin working perfectly and decided to start collecting parts for a new server build. I recently finished building it and followed Spaceinvader One's video of how to transfer to new hardware, and this begins my ongoing issue. The server will boot up and act perfectly normal for a random interval of time (usually between 15 minutes to multiple hours, but never more than eight) and then the server crashes and I see a warning about my flash drive being corrupted or disconnected. I can reboot the server with no issues, but it will disconnect again at a random time. I will attach the newest diagnostic log for more information. I do not believe that the issue is solely a fault of my hardware because I can boot a live instance of KUbuntu and have it running for many hours (well more than 8) with no issues. I also do not believe that my flash drive is corrupted because I can re-setup with the old hardware and it works with no issues of any kind. Since I am so new to Unraid and self-hosting I am sure that the problem is my lack of experience.

Here is what I have tried so far:

Reinstalling Unraid to my flash drive using a backup

Booting into safe mode without plugins (I thought the issue was a plugin incompatibility with the hardware, but the second time I did this it only lasted 15 minutes before crashing in the same way)

Stopping all Docker containers collectively and individually (I am only running two services on my server: Jellyfin and a Hytale game server for personal use)

Removing and reinstalling all plugins: Appdata backup, CA Cleanup Appdata, Community Applications, Dynamix Active Streams; System Buttons; System Information; System Temperature, Fix Common Problems, GPU Statistics, Intel GPU TOP, NUT, Tailscale, and Unraid Connect.

Changing various BIOS settings like enabling legacy USB, disabling XHCI hand-off

Other things recommended by multiple web searches that I cannot remember right now. The only thing that works is going back to the old hardware.

Here is a list of the new hardware (I do not have a complete list of the old hardware as I do not want to go to the trouble of building it again if I can help it):

Jonsbo N3 case

Aorus b760i pro DDR4

Intel i5 12600k

PNY 32GB DDR4 RAM

LSI HBA card (IT mode) for the 8 HDD bays (I am trying to add one extra drive in addition to the three already mentioned, but the server crashes before disk-clear finishes. This is not the cause of the problem as I have tried it when I finished the build with only the original three drives. The LSI card itself is not the issue because it still crashed using the four onboard SATA ports before I got the LSI card.)

Corsair 750 watt PSU

Still using the original four drives; 1 SATA SSD as cache, one 8TB parity, two 2TB data. (plus the new 4TB unassigned disk mentioned above.)

Other than the diagnostic ZIP let me know if you need any more information. Any help is greatly appreciated!

jacricorp-diagnostics-20260312-1759.zip

1 hour ago, jandcolsen said:

the right place to post this

Really makes more sense to split this into your own thread. Nobody was still using that old thread, but probably the main thing your situation really has in common is the title.

Your boot flash had already disconnected when those diagnostics were taken, so a lot of information about your configuration could not be collected by diagnostics.

Try booting from a USB2 port

I have tried both USB 2.0 ports on the back of the motherboard, and I have used a small hub attached to the USB 2.0 header on the motherboard. Neither port prevents the issue.

Your boot flash had already disconnected when those diagnostics were taken, so a lof of information about your configuration could not be collected by diagnostics.

Does this mean I cannot get diagnostic information about the actual issue since I do not know when it will crash in that way?

See about enabling syslog server to capture whats going on when it crashes

Ok, I will see about enabling that and get back with you. Thanks!

4 minutes ago, Veah said:

See about enabling syslog server to capture whats going on when it crashes

Suggest you don't use the mirror to flash method since flash is the problem.

Can the flash be the problem when it works perfectly in the old hardware? I will set it up for local syslog since I have been able to reboot it with no problem.

Just now, jandcolsen said:

Can the flash be the problem

Perhaps a better way to say it is the problem involves the flash.

Over the past couple of days I enabled the syslog server and got the server to crash multiple times. But, there are no files in the syslog folder. I tried different setting for the syslog server and still nothing. With my inexperience I do not know the correct or best way to setup a syslog server. I used the directions linked by Veah, but it doesn't really detail all of the possible settings - if they are even applicable. Unless you have something else I should try I think this is what I am going to do: I am going to install the trial version of Unraid on another flash drive and see if it will be stable that way. Since I only have the two services running and a handful of plugins it shouldn't take more than a couple of days. Should I pursue this course?

4 hours ago, jandcolsen said:

best way to setup a syslog server.

Post a screenshot of your settings

Here are my syslog settings:

With those settings, the syslog server is just listening for syslog messages from other machines. As mentioned in the link if you want the server to record its own messages you either need to put your server's address in the remote server field, or set the 'mirror syslog to flash' option

Just put localhost for "Remote syslog server" then it should save to your syslog share. Mirror to flash may not work because

On 3/12/2026 at 10:18 PM, trurl said:

the problem involves the flash.

Ok, I will try that. Thanks!

Ok, I captured a log file. Here it is:

syslog-127.0.0.1.log

On 3/12/2026 at 10:06 PM, jandcolsen said:

Does this mean I cannot get diagnostic information about the actual issue since I do not know when it will crash in that way?

See if you can get diagnostics immediately after booting. Since you are getting syslog now, the main things we need from diagnostics besides syslog should be there immediately after bootup.

1 minute ago, trurl said:

should be there immediately after bootup.

That syslog you posted makes me wonder if the very first thing that happens when you try to boot is the flash disconnecting, so maybe you won't get any better diagnostics than before.

It just crashed again a couple of times so here is the new syslog:

syslog-127.0.0.1.log

Hopefully that helps. I tried my idea out and created a new Unraid flash with a trial version. It stayed up for over 13 hours before I shut it down to try out your suggestions. That makes me think it might all be flash related somehow, and not necessarily a corrupted file. What do you think?

Edited March 16Mar 16 by jandcolsen

9 minutes ago, jandcolsen said:

created a new Unraid flash with a trial version. It stayed up for over 13 hours before I shut it down

Do you have diagnostics from that?

No, I don't. I didn't think I would need any because it worked perfectly fine. Including my Hytale server having absolutely no issues after using it for several hours.

Should I try to write my flash backup on the new flash drive? How does that work with my license?

https://docs.unraid.net/unraid-os/system-administration/maintain-and-update/changing-the-flash-device/