ZimaOS sporadic very slowly?

Operating System
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1

Hey zima community, i need your help.

I’m new to Linux and ZimaOS.
I set up my server about four weeks ago, and the NAS has been running on the system ever since.
From the very beginning, I’ve had a problem where the operating system runs extremely slowly at times.
It often starts right at the login screen; loading the page in my local network browser can take several minutes before I can even log in. Once I do log in, the dashboard seems to take forever to load—or never finishes loading at all. The apps don’t appear, so I end up rebooting; sometimes it runs significantly faster after a reboot.

It often happens that the server has been running for a few hours and I want to save data to the NAS (I’ve set up a Samba share for this). Creating a new folder takes several minutes before I can actually save a file.
This issue also improves drastically after a reboot.

Does anyone have any idea what might be going wrong here or how I can fix this problem?

On Windows, I’d suspect driver issues or missing drivers, but I have no idea how to troubleshoot this on Linux.

System specs:
CPU: Intel i7 8700K
RAM: 32GB DDR4
Motherboard: MSI MPG Z390 Carbon
System SSD: Samsung 850 256GB
Storage: 2x Seagate IronWolf 8TB (RAID 1)

ZimaOS Version: 1.6.1

Thanks in advance =)

2

From what you describe, I would not assume a missing driver straight away.

Because the slowdown affects both the ZimaOS web login/dashboard and Samba file creation, I would first check for system load, memory/swap pressure, disk problems, or a storage/RAID issue. A reboot temporarily clearing the issue usually points to something building up over time.

Before reinstalling anything, please run these checks when the system is slow and post the output here.

free -h

uptime

df -h

Then also check disk and RAID status:

lsblk -o NAME,SIZE,MODEL,SERIAL,FSTYPE,MOUNTPOINT

cat /proc/mdstat

And check recent system errors:

dmesg | tail -n 80

The important things to look for are:

  1. RAM or swap being heavily used
  2. Very high load average
  3. One disk causing I/O errors
  4. RAID 1 rebuilding, degraded, or stuck
  5. The system SSD or HDDs reporting errors

Since you are using 2x 8TB drives in RAID 1, a slow or failing disk can make the whole NAS feel extremely slow, especially with Samba writes.

Also, if this started from the beginning on ZimaOS 1.6.1, it would be useful to know whether you installed fresh or upgraded from an earlier version.

Post the outputs above and we can narrow it down properly.