Yes sorry @NA9D , i misunderstood, later in text when you said “virtual switch” that got me misunderstood.
Thanks for correction.
BTW i reported this to the Offical Ticket system as Steve suggested so now I’ll see what happens once we go past AI assistent initial reply.
cheers
Hi Lewis -
with only on an 8 drive NAS (like a little TVS-h874, or the newer TVS-h1288AX), you will get 1000 - 1100 MB/sec on a 10G connection. You have an excellent 10G switch - the Ubiquiti Enterprise XG24, which I use all the time. When you start adding more drives into the storage pool - you don’t get more bandwidth to a single client - you don’t get more than 1000 - 1100 MB/sec to a 10G client. You get more TOTAL AGGREGATE BANDWIDTH, so that you can have lots of 10G client computers connected to your Ubiquiti XG24, and you will now get more total bandwidth, so that multiple clients can work with full uncompressed 4K video without issue. That is the point of MORE drives (and of course, more storage).
There is nothing wrong with QuTS (ZFS) - I use this for every installation now - no matter what the QNAP model is. When I observe your poor results, I am now starting to blame “other things” - like what computers, or what 10G adapters you are using. When using a simple Mac Mini or Mac Studio that has a native 10G ethernet port - there are no issues. When using a Mac Book Pro or iMac that does not have 10G, if you are using good quality 10G adapters from QNAP, Sonnet, Other World Computing (even Ubiquiti) - there are no issues. Are you using professional thunderbolt to 10G adapters, or are you using cheap ones you find on Amazon from “no name” companies. Are you using Windows PC’s ? Because if you are, and your 10G ethernet card is not in a x4 x8 or x16 PCIe lane slot, you will get TERRIBLE performance over 10G. I have seen this even with HP Z series workstations with 10G cards from Sonnet. Put the 10G card in the wrong PCIe slot - and you get TERRIBLE SPEEDS. You CANNOT use a x1 PCIe slot, or you will get terrible speeds.
Of course, EVERYTHING should have Jumbo Frames Enabled - this means that your QNAP 10G port, the Ubiquiti XG24 10G switch, and your computers 10G ports should all have MTU 9000 set for jumbo frame performance.
And to simplify things now - bypass the Ubiquiti XG24, and just go directly from your computers 10G port to the QNAP 10G port. Use static IP addresses - for example, make the QNAP 10G port a static IP address of 192.168.2.3, subnet 255.255.255.0, MTU 9000, and your computers 10G port 192.168.2.11, subnet 255.255.255.0, MTU 9000. Now connect from your computer to
192.168.2.3 using the SMB network protocol (on a mac - GO> Connect To Server> smb://192.168.2.3> Connect
ALSO - I advise you to do what Jon is doing - download the free AJA System Test instead of Blackmagic Disk Speed test for your testing. I don’t care if you are using Davinci Resolve - just use AJA System Test for your speed testing until this gets resolved.
Let me know -
you have my email in my signature here - I can remote into you and see what is going on. At this moment, I am going to GUESS, that you have Win PC’s with 10G cards, and the cards are in the wrong slots, or you don’t have a PC with a free x4 PCIe lane or greater available to you.
Bob Zelin
@Bob Hi Bob,
Thank you very much with your full in detail explanation, I appreciate your time invested in this 
. I’ll ping you on e-mail just to be in contact if not anything else, always good to have PRO contacts :).
On the things of how do i connect my PC i can assure you my PC/network card is not problem.
I use Threadripper PRO CPU with Asus WRX 80 PRO motherboard which have Dual 10Gbit network on the Motherboard. I also have Dual Xeon system and few more i7 Workstation PCs/motherobard and they all have 128-256GB of Ram and multiple GPU setups, System NVMe/SSDs (I do 3Dmodeling/Renderin¸g with GPUs so i have “mini GPU render farm” so aLL PCs symultaneously render EXR frames to the NAS which can be 300-500MB per frame :)).
Also all my Motherboards have 7 full size 8/16x PCIe slots (they all are workstaiton PRO series) so even if i’d have separate network cards (whcih i don’t need because i need to “save” PCIe slots for GPUs so separate network card is never option for me) it would still be fine since my PC/CPUs have 44, 80 and 128 PCIe lanes 'coz i use multiple 16x GPUs in each one so i couldn’t plug it in “wrong slot” enev if I’d want :).
As for the speeds bottleneck If both of my Synology NASes (both 8 drives only in SHR-2/RAID6) can hit the 850/950 with same network/test app and from same PC/switch then definitelly isn’t my PC/network card or switch that is problem :).
And yes i’ll take your advice and install AJA (just to be in sync) and test speeds again tomorrow (right now I’m copying over filestaiton from Synology to QNAP so and since QNAP File Station6 don’t have “pause” button i can’t pause it now to test but need to let it go through for next XY hours and then try).
P.S. I’ve installed AJA (to prepare myself for tomorrow) and i can’t seem to find how to Browse to NAS over network in that AJA app?.
I don’t use Mapped drives but only UNC paths (due 3d/comppositing/EXR workflow and collaboration i need all my paths as UNC/relativ eand nto absolute) so it only shows my 4 locak disks which are actually in my workstation.
I can find “browse” button to link to NAS shared folder like with other testing apps. AM i missing something or AJA can’t use UNC and must be mapped drives only ??
cheers
You change the target disk, navigate to the network, select the NAS, log in and then select the desired folder for the test…
Hi Lewis -
let me assure you, that when I log into your system, we ARE going to map the QNAP network volume onto your local PC. We will see the QNAP Shared Folder, we will right click on that folder, and select MAP NETWORK VOLUME. That is how we are going to do speed tests. So if your Share Folder in the QNAP is called EXR, that will now appear as a network volume on your PC - something like EXR Y:/
we then will click (in AJA System Test) on Target Disk, select that drive (the QNAP) and run the speed test.
bob
