Forgot to say, love the channel as I've been reviewing a few things today. Very informative. Your sign off does make me chuckle a tad as I'm from England....

This is amazing, just followed your instructions and boom. fair play rexy nice one.

Been using smb multichannel with synology since 6.2 days and still works amazingly for me. With quad gigabit + sata ssds i've gotten speed tests in the 400MB/sec range (write consistency of that speed is highly dependent on the SSDs themselves but read speads tend to be consistent). I've even managed to get 1.5GB/sec with dual 10Gbe multichannel (again, sata ssd volume, 3 ssd's in SHR), two 10Gbe links on synology and two 10Gbe links on a windows client.

Appreciate your videos. Thanks from NZ.

This is absolutely awesome news. Suddenly my DS920+ doesn’t feel quite so outdated if I can run smb multichannel. Woo hoo!

I was looking for this video after the update went out, found ones of you and the others mentioning it in the beta and years old videos of it on Windows and with other OSes many had the data corruption issue that the beta had that you warned us about. Will watch this one after my meetings, thank you for making it.

Thanks! Great explanation:-)

Hi, it works! Thank you 😊

They just added SMB multichannel in DSM 7.1.1 with the latest SMB service update.

Me watching this after ordering a 10Gb adapter only yesterday.. 👁👄👁

does this work with the USB 3 ports on all the older Synology Nas to connect USB 3 to 2.5 g ethernet adapters to increase the overall bonded bandwidth?

SMB Multi-channel now seems to be available for DSM 7.1 also. My DS918+ has been given the SMB service update today. DSM 7.2 seems to be a manual update on such a box so I'm sticking to 7.1.

Amazing! Which Ethernet adapter do you recommend for the mac? it will work with DS920+? Thank you!

❤🎉Tank You for another amazing feature explained. Combining this with other upgrades to speed up our outdated 920+ NASes You’ve mentioned (like2,5Gbps adapters etc) do You think it’s possible to expand 2LAN connections with extra lines created from USB ?? So theoretically we could output at least 3LAN “channels” from single NAS (with 1Gbps adapter)? Do You think this might work?? 🧐😅😅

Such a simple and elegant idea ( SMB Aggregation )! I'm surprised it wasn't thought of previously. My only concern is whether it requires Jumbo frames. If so, your switches and modems have to be capable as such or your stuck at 1500 MTU. ??? Been looking forward to this Rex - Thanx a lot 👍👍👍💫💫💫💫💫

Hi SpaceRex, I can't get this to work on Windows. I look forward to your more in-depth video. Thank you,

Might be worth testing this if your nas is a domain controller. Dual homed dcs have always been problematic.

Have learned so much from you man. Had a question. I am a small video production house looking to build a 6 bay nas for storage and working off of. I will have separate backups. My plan is to start with 3 12tb drives and have 3tb of m.2 cache and use a 10gb Ethernet port with a MacBook Pro m2. Do you think this will bottleneck and my MacBook will suffer in performance? Really don't want to invest this much if it's not going to work out. Thought about a DAS bay but I'd like to be able to expand as I go, and potentially even add different size hd down the line. Appreciate any help and thank you so much for all of your wisdom!

Thanks for the SMB-MC demo. Have you verified these speeds going in the opposite direction - i.e., copy the large file from the PC's SSD back to the NAS? I've read reports where SMB-MC may only increase speeds in one direction (NAS --> PC but not the other way around).

This works from my Windows PC using asingle 2.5Gb USB interface to DS1520+ connected to two ethernet ports, but not from my MBP 14" M3 using a similar2.5Gb USB interface. Seems like MacOS does not work with SMB multichannel using a single higher speed adapter > 1Gpbs. It works fine on MacOS to my Synology connected to its 2.5Gbps USB interface which I added on previous before I tried multichannel. I will stick to the 2.5Gbps interface on my DS1520+... was worth a try!

Thanks for the video one question is the setup the same on a windows PC?

this is awesome.

Great video, thank you. For a few customers, using your past tutorials, I have their Synology NAS setup with link aggregation on the 4 nics. So this latest update to SMB multiple channel is better now than link aggregation? 🤔

Will they ever fix the VM speed on 1621+ or higher with updates? Vm feels like it's running with cpu legged at 100%.

Thanks!

3 Questions for SMB and WiFi. 1. In a house with 2 laptops (1 mac, 1 PC) using WiFi, would adding a switch between a router with two cables to a DS423+ (or hopefully DS223+) have any tangible improvement? 2. Would there be any noticeable improvement for browsing photos or videos off site, (ie on phone or apple tv at someone else's home) I have Fiber to the router. 1G up and down

What about a synology NAS to synology NAS transfer over remote mapping? My 718 and 920+ both have it on but only get 120mb using a copy / paste via remote mapping. Must it be via an smb share on a pc/Mac?

Man i was so hype..this isnt supported in ds418,from my understanding because i have realtec chip in nas...i was sooo hype to try

Any ideas on how to enable multi channel between 2 Synology NAS boxes? I only see an option to mount NFS 4.1 shares as NFS 4.0.

I am using a Synology DS723+ with 2 cables plugged into my Router, so no switch. Those connections were set up as a link aggregation but, in an attempt to double my speed, I deleted the link aggregation and turned on SMB as per your instructions. Unfortunately, there was no overall speed difference and both of those still add up to about 120 MB/s with each of them fluctuating between 50 and 70 while adding up to a total of 120 MB/s. So it didn't seem to work in my case on a Windows 11 Pro machine. Do I need to turn on SMB on my computer like you did on your Mac?

I know this sounds like a dumb question I'm looking at getting our first nas the one I've been looking at looks like a pretty solid unit got 10 bays compatible with 18tb a piece for a total of 180 tb capacity it's got Four ports on the back Two 10 gig Two 2gig Mainly looking to store video files from our video production either 1080P or 4K and hopefully soon-to-be 8K video so very large files so this multi-stream application for us would be perfect

I have the DS423 and dsm7.2 and that command is not in the menu. I read someplace else that the newest update has SMB multichannel turned on by default and you can only disable it.

Mr. SpaceRex, as always thanks for the FANTASTIC video. Can you clarify a few things? In your video you have TWO 1 GB Ethernet adapters on your MacBook. Does this work equally well when the Mac has ONE 2.5 GbE adapter [and Synology has two 1 GbE connections]? For instance, I have just gotten the $40 Anker A8316 PowerExpand USB-C to 2.5 Gbps Ethernet Adapter. And I would love to be able to double my speeds to my DS1813+. Would this work plug and play once the SMB Multi channel is enable on 1813+? Also, I have always thought that when you have MULTIPLE Ethernet connected to a NAS.. Let’s say a 10GbE and ALSO a 1 GBe [for WOL], that you would have to connect to NAS via the IP address of the 10 GbE connection? But, it seems in your video, I misunderstood and if I enter a CONNECT to server of smb:DS1821/Videos that it would AUTOMATICALLY pick the fastest connection. So, MacBook has WiFi and 2.5 GbE connections it will always connect via the FASTEST… automatically… Is that correct? Thanks again for all your words of wisdom and FANTASTIC videos.- Eric ZORK Alan & Sweetie [ Professional Poets & Bed Vloggers ]

Considering the competing benefits of link aggregation (serving multiple users) and smb multichannel (faster single user)… would it make sense to configure the four 1Gbe ports on my DS1515+ as a pair of 2Gbe bonds and enable multichannel? It’s connected to a Ubiquiti-based 10Gb network with a couple of 10Gb clients (main desktop and my ESXi virtual server) plus a pile of 1Gb clients. I’m trying to balance increasing the transfer speeds for the 10Gb clients AND still support the ability to stream Jellyfin/SageTV media to multiple simultaneous clients. Thanks!

I do not run DSM 7.2 (yet) and I got an update to SMB yesterday that claimed to add the SMB Multichannel feature. So unless that is just plain wrong it seems, like you don't actually have to upgrade to 7.2 to get it?

If my computer only has one ethernet port, how do I plug 2 ethernet cables into it? Do I have to use a switch for this?

I'm a bit confused, does this require a 2.5gb+ switch as well? I tried connecting my 923's 2 lan ports to my router (which is limited to 1gb ) then to my pc's single 2.5gb port, and still am only getting about 100mbps transfer speeds. is my router bottlenecking, or do i need to have an additional lan port on my pc that is connected to my router?

I'm going to guess the most common setup everyone has would be as follows. A PC with 1x 2.5Gbps port. A switch with multiple 1Gbps ports. Synology NAS with 2x 1Gbps ports. Im guessing there would be no increase to throughput in this scenario, because the PC is connected to the switch at 1Gbps (so would be better off setting up Link Aggregation). If the switch was upgraded to 2.5Gbps, then I assume SMB3 Multichannel would work and should see a throughput to the PC of 2Gbps (2x 1Gbps from the NAS)? I am also confused with Synology's documentation. The forum shows a picture with the client having 1x 2.5Gbps network card and NAS with 4x 1Gbps connections and states "When the client is using a single high-speed connection (10GbE) and the server is using multiple lower-speed network connections (1GbE) or the other way around". But on their Documentation/website it says "SMB3 Multichannel can be enabled if both the client and server have multiple network adapters"', so what is it? Do BOTH need to have 2 or more network cards for this to work?

Hi, thank you for this video. Does SMB multichannel make it possible to maintain 1 Gb/s transfers on two computers at the same time? Meaning two wired connections from server to switch, but only one connection from each computer to switch?

If have 3 Synology Nas running at home. If i enable SMB multi channel on all Nas and connect with a normal 1gbit unmanaged switch. Does it benefit the transfer rate between the nas’s? Thx for the help.

Thanks for this great video again ! Just tried with my DS920+ and my internet box switch (one 8 gbits link and four 1 gigabit links ). My Windows PC is connected to the 8 Gbits with a 10 gbits PCIe interface. Activating SMB multichannel works but i'm still stuck to 1 Gbits tranfert speed (113 MB / sec). Any idea ? Do i have to activate something in Windows ? Thanks again Edit : I found the solution, my 10 Gbits SFP+ network card wasn't compatible, i had to add my internal ethernet to the game, and now everything's ok. Synology : SMB3 Multichannel can be enabled if both the client and server have multiple network adapters. However, if you have a single network adapter, you can still enable multichannel as long as the adapter supports RSS. Note that if you use a single adapter without RSS, there is no difference in the SMB performance

As an FYI, the option for SMB Multichannel is not present in a DS418. My feeling is, what ever is not a + unit will not have the option.

I have 2 Ethernet connections with different subnets. In order to take advantage of SMB multichannel I need to plug in 2 more Ethernet cables 1 to each subnet correct?

Hi SpaceRex, my RS820+ NAS has all 4 NICs bond together (1GBx4 = 4GB) in Link Aggregation Mode (Adaptive Load Balancing). Most of my users are 1GB NIC, so does this mean that my users will accessed a 4GB LAN speed or 1GB on my NAS? By the way, how do you disable Link Aggregation if i want to activate SMB multichannnel?

If we have both wifi and 1 gibabit on back of puter.. will we get around 1.5gb/s with SMB multichannel? Does it use both the wifi connection and the physical connection?

Would this still work without a switch? I have my 423+ plugged into my router, then the router running to my PC. Would it still work if I run another cable from the NAS to the router? or would I still need to run a 2nd network cable into my computer as well?

SMB Multichannel doesn`t work between two Synology NASes (for things like mount folder in DSM FileStation)

What reason would the option not be avalible? I am running DSM 7.2-64570 Update 3 with 2ethernet ports and the option is not avalible?

Hello , howdy do? Thanks for the great Videos. I have a Synology ds620slim and I have seen my check box for Enable SMB3 Multichannel is greyed out. Do I have a compatibility limitation?

Do you think we will be able to use this with 2x 5gbit USB Nics? Currently if you try to bond 2 of these it does not work.

Do you think SMB multi channel has any benefit if you already have a 10gb connection from NAS to UDM and then 2.5gb connection from computer to UDM?

Im a video editor and run files from the nas, I was hoping I’d be able to use it but sounds like it won’t be the best for me. Would it be possible to simply connect the other LAN when I’m just wanting to cop the first batch of files from the cameras over then pull it out for when I’m editing? *edit just seen the rest of the video, still be interesting to see if having it enabled would add lag even though there’s only one cable for it to route through*

Would this provide any benefit in the scenario of using hyperbackup to back up one synology NAS to another, where each NAS has two ethernet ports? Or does hyperbackup not use SMB?

I have tried the SMB multichannel , Version 4.15.9-0632, Using DSM 7.1 Release 5 SMB Service installed on DS220+ with 6GB of ram. When I copied files to a Share on Synology I am getting 220MB copy from Synology about the same speed. I have 2 1GBe Nics in computer. When I try Active Backup for Business I don't get over 100MB per second , Doesn't seem to work any faster in Active Backup for Business with DSM 7.1.1 , can anyone test this. Also when I put in MTU 9000 makes it DS220+ unstable . Files with often go to 1Mb or slower why doing a copy not surer why so put MTU on Synology side back to MTU 1500 which is the Default

I have DSM 7.2.1-69057 Update 3, but I don't see Enable SMB3 multichannel.

Will this work at 2GB if I have a computer connected at single 2.5GB link to the switch, which then connects via two 1gbps to the NAS?

whats the difference between SMD multichannel and a network bond? What`s the best to use when you want the fastest speeds for a plex/file server?

Does this help load photos in Synology photos faster from accessing from an end device?

can you run 2 connections from nas into a 2.5gb switch so 2 x in and one 2.5gb out to pc

Thanks for this! I looked and I have it on 7.1.1 update 5 running a DS220+ 215MB/s on two 1Gb synology LAN Ports ---> Windows 11 PC w/Mellanox ConnectX 3 10Gb NIC Moved Ubuntu 22.04 LTS.iso (4.6Gb) PC ---> Synology in ~20 seconds 👍👌 Can you run iperf on this?

Is it possible to do smb multichannel with 10Gbe and s well that’s r is it useless because of the bottleneck ?

This might be a dumb question but, can you do this even if your not paying for more than 1GB internet? I have a 1813+ with four ethernet ports. Additionally, can I set it up by plugging one cable from my PC's 10GbE network adapter into a switch after plugging four cables into each of my NAS's ethernet ports connected to the same switch?

Sorry but im confused, didnt get how you were connecting your hardware. Is your NAS connected directly to your PC with two ethernet cables and in that case why? Im using a switch and am wondering now what the best choice for connecting it all would be.

How does this compare to Link Aggregation? What would the benefits be of each?

Synology released a package update to SMB for DSM 7.1 users over the last couple of days. Installed via Package Manager. Installed it yesterday. I am limited to a single 25G connection to each of my two Synology NASes however, so I don't expect to see any difference.

If I have 4 connections from my NAS to the switch but only one connection from my Mac, does enabling this make a difference? I followed the tutorial and enabled SMB 3 but didn't see any speed difference at all. Also, my NAS is about 80% full. Would that impact the speed?

No matter what I do, this doesn't work for me. Only one connection is being used, it ignores the other two. 3 x 1gb connected on 1813+, into a 2.5gb switch, which itself connects to a 10gb switch, then into my Mac Studio with a 10gb connection. Using `'smbutil multichannel -a", one server NIC is shown as "state connected", the other two as "state idle".

Apparently you don't need DSM 7.2. I received the option with the latest update of the 'SMB Service' app

hey spacerex...just upgraded to 7.2 and now my bt search keeps getting error 1407 network connection unstable.blah blah blah...my network is fine....have you experienced this problem?

I think most peoples scenario is a 2.5 GbE or 5 GbE or 10 GbE nic on a computer connected to a switch of same speed (10/5/2.5/1 GbE) and a synology with 2 or 4 pcs 1GbE nic´s. connected to that same switch. I have 2 computers, one with a 2.5 GbE and one with 10 GbE nic. A 10/5/2.5/1 GbE switch (NETGEAR XS508M) . A DS1520+ SMB multichannel enabled and connected with nic 1 and nic 2. My speed only went up from 110 MB/s to 125 MB/s. I use cat6a and cat7 on quite short distances. Maybe the switch is not capable of handeling this, but its not impressive!

So would a gigabit switch be the bottleneck? My pc support 2x 2.5 GBE but is behind a gigabit switch.

If my computer is connected to the router with wifi and Ethernet, and my router to the NAS with 2 Ethernet cables, would I have a speedboost from this feature as well?

Just don’t edit from the NAS and you’re golden!

This is interesting and I tried on Windows 11 with 2 Relatek cards, one 2.5g 8125 and GigE 8168 - both supports RSS according to Realtek website, the problem is that with the actual Win11 Realtek drivers NetAdapterCx RSS is not supported and as far as I understood RSS is the way to enable SMB Multichannel in Windows. I tried to install the Win10 NDIS drivers and RSS appears in the cards properties but somehow they don't work properly, so I'm stuck on to get this feature working. Any idea? Did you try on Win11?

I don't like 2 (or more) ip x device however, there must be another way (maybe)

Just a quick addon the SMB Multichannel will not be available for all Synology devices. Only X86 chipsets. Any ARM base will not get the option of turning it on such as the DS418..... guess which Synology device I own. :(

I have to disable Link Aggregation to enable SMB3 Multichannel. Now I feel bad. I bought a switch just to enable that link aggregation. Heh.

We've had this feature for a year.

but will this benfit me being on a 1522+ only 700 meg throughput at the moment

Is this limited to some Synology NAS? I tried to enable it on a DS418 and this option is not available for this NAS.

Help -- I did all the settings. Windows 10 computer routes the packets on 2 NICs evenly. But synology only receives or transmits on 1 NIC. I followed the exact settings and no link aggregation

Does this work if you have a single 10GB in your computer and 2x1GB on your sinology? I would assume I would need a switch capable of 2.5GB.

I'm a little confused about how this would work on Windows 11. What do you need to set up in Windows to get this to work?

I have a NAS with x2 Ethernet ports. On my PC Do I need to install x2 1GB ports on my PC? Or can I buy a Single 2.5GB port? You mention it’s not recommended for video editors. What about still RAW photos in Lightroom and Photoshop? Would this make it possible in theory to use something like a cheaper NAS such as a 220+ to edit photos directly from the NAS?

What are you saying at the beginning of your video?

Can someone please tell what is the first sentence he said? Can’t figure it out after watching so many of his videos.

It doesn't work on DS418, it sucks. Then why do we need this update at all?

SMB only Works under File Share to Double your Speed , Replication not supported from Nas to Nas no SMB Support, Even under 7.2 Version

Does SMB Multichannel Work with Active Backup for Business , Anyone know.

its amazing but my machine (MacBook Pro) if go to sleep and wake up its back to one Chanel 120mb

when 7.2 will be realeased?

How is this done on windows

What would be GREAT is to find a Switch that supports 2.5gb & 10gb that has LACP and/or LAG for under $100, can't seem to find one for under 2.5x that... Probably should have just held out for the DS923 instead of my DS920.... grrrrr

It doesn't work for me. I wonder what am I doing wrong.

Okay to use with a 1Gbe switch?

I don't understand your remarks that contrast SMB multichannel to link aggregation by saying that the former somehow goes against networking standards, Rex. I don't see how these standards could possibly forbid a client from establishing simultaneous TCP connections to multiple IP addresses that just happen to be different interfaces on the same machine. (Or in fact, even to different IP addresses on the same physical machine-VM networking does this...)

Has anyone tried to copy from 1 Synology to another Synology using 1GBe x 2 Nics to another Synology Boxes 1GBe x 2 Nics or Synology Box that has 4 Nics to another synology box that has 4 x 1GBe Nics

To bad slow file copy problems over SMB still exist in 22H2 Windows 11.

Would this help plex server ?

now i need an ethernet switch...I think I can reconfigure an old router....