GoKawiilI've been moving my home storage over to a UniFi UNAS Pro 8 as part of a larger homelab moderization. My main IRONHEART (the ultimate PC from a few years back) desktop now has an Intel E610-XT2 10GbE card, the NAS is on 10GbE, and there's a Minisforum MS-01 miniPC on the same network with a 10GbE SFP+ connection running Immich and Portainer and a few other things.
Everything says 10 gigabit. Windows says 10 gigabit. UniFi says 10 gigabit. SMB copies are using the correct NIC but my file copies are running at around 100 to 200 megabits per second which is sad making.
Naturally, I blamed the NAS, and the spinning rust within. The UNAS has six 16 TB spinning disks in RAID 6 and a pair of NVMe SSDs being used as cache. I'm also running Immich on the MS-01, with its photo library living on the UNAS, so there are lots of thumbnails, metadata reads, and little background writes happening. All seem like reasonable suspects.
I switched the UNAS SSD cache from read-write to read-only. No meaningful difference. I stopped Immich completely. No difference. I looked at iostat ; the disks weren't saturated. We looked at SMB signing and Windows Defender network scanning. Still slow.
Then I stopped testing the NAS and ran iperf3 directly between the Windows desktop and the MS-01:
iperf3 -c 192.168.1.222 -P 4
133 Mbit/sec
Oops. The reverse test was better, but still wrong:
iperf3 -c 192.168.1.222 -P 4 -R
1.33 Gbit/sec
... continue reading