This is my first real dive into hosting a server beyond a few Docker containers in my NAS. I’ve been learning a lot over the past 5 days, first thing I learned is that Proxmox isn’t for me:
https://sh.itjust.works/post/49441546 https://sh.itjust.works/post/49272492 https://sh.itjust.works/post/49264890
So now I’m running headless Ubuntu and having a much better time! I migrated all of my Docker stuff to my new server, keeping my media on the NAS. I originally set up an NFS share (NAS->Server) so my Jellyfin container could snag the data. This worked at first, quickly crumbled without warning, and HWA may or may not be working.
Enter the Jellyfin issue: transcoded playback (and direct, doesn’t matter) either give “fatal player error” or **extremely **slow, stuttery playback (basically unusable). Many Discord exchanges later, I added an SMB share (same source folder, same destination folder) to troubleshoot to no avail, and Jellyfin-specific problems have been ruled out.
After about 12hrs of ‘sudo nano /etc/fstab’ and ‘dd if=/path/to/nfs_mount/testfile of=/dev/null bs=1M count=4096 status=progress’, I’ve found some weird results from transferring the same 65GB file between different drives:
NAS’s HDD (designated media drive) to NAS’s SSD = 160MB/s NAS’s SSD to Ubuntu’s SSD = 160MB/s NAS’s HDD to Ubuntu’s SSD = .5MB/s
Both machines are cat7a ethernet straight to the router. I built the cables myself, tested them many times (including yesterday), and my reader says all cables involved are perfectly fine. I’ve rebooted them probably a fifty times by now.
NAS (Synology DS923+): -32GB RAM -Seagate EXOS X24 -Samsung SSD 990 EVO
Ubuntu: -Intel i5-13500 -Crucial DDR5-4800 2x32GB -WD SN850X NVMe
If you were tasked with troubleshooting a slow mount bind between these two machines, what would you do to improve the transfer speeds? Please note that I cannot SSH into the NAS, I just opened a ticket with Synology about it.
Here’s the current /etc/fstab after extensive Q&A from different online communities
NFS mount: 192.168.0.4:/volume1/data /mnt/hermes nfs4 rw,nosuid,relatime,vers=4.1,rsize=13>
SMB mount: //192.168.0.4/data /mnt/hermes cifs username=_____,password=_______,vers=3.>


That is horrific, that’s ya problem
Right, but how to solve it?
You’ll have to troubleshoot to see why your local network is worse than avian mail
Know any Linux magic to try out?
Can you run
sudo ethtool <interface>Should tell you what the NIC is physically seeing on your Ubuntu machine. Also maybe just do a generic speed test from your Ubuntu machine to see if its everything on the NIC or just lateral traffic being impacted
“-bash: syntax error near unexpected token `newline’” I’m not familiar with ethtool, but I looked up some commands related to ethtool. Unfortunately, everything I tried give me “bad command line argument(s)”
Could be anything from shit cable, to failing network equipment, to bad driver. Please tell me it’s hardwired and not on wifi
Of course, cat7a just tested all the cables too
Some consumer network adapters poorly handle newer cable standards and shielded twisted pair, so just be wary that could be a factor even if tested to spec
In a response to just_another_person below, it seems to be a Tailscale hangup