Dear Forum,
Since I have not found a viable solution on the internet so far, I am trying my luck here. Briefly about my setup:
Hardware:
- Ryzen 4 Pro 4650G
-
32 GB ECC RAM
-
Asus ROG Strix X570 Gaming
-
2 x 16TB Seagate Exos X18
Firmware:
-
Proxmox, and inside Proxmox, I have a TrueNAS Scale VM with a SATA Controller PCIe Passthrough.
Now to the problem. Initially, whether on SMB shares on the Mac or Windows PC, and whether over LAN or WLAN, I always get write speeds of 80-90MB/s for a few seconds, but then it drops to a maximum of 17MB/s. My two hard drives are in a mirrored pool, so they shouldn’t be the problem… The VM has 16 GB of RAM and more than enough cores, so it never reaches maximum utilization.
What I’ve already tried:
-
Reinstalled the VM.
-
Used different SATA cables.
-
Changed the LAN cable.
I am asking for help because I am really at a loss!