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Jun 16, 2016
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Anybody having trouble with SMB under Catalina having a better time under Big Sur?
 
I mount my NAS shares on the desktop using SMB, and my NAS is connected as a DAS to my Mac Pro via Thunderbolt. In testing transfer speeds yesterday I noticed file transfer has become slower, from 900MB/s to about 600MB/s. Certainly enough to notice it.
 
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I mount my NAS shares on the desktop using SMB, and my NAS is connected as a DAS to my Mac Pro via Thunderbolt. In testing transfer speeds yesterday I noticed file transfer has become slower, from 900MB/s to about 600MB/s. Certainly enough to notice it.

It's a beautiful NAS you have !!!! Wow !

SMB to my Synology NAS DS1513+ with latest software update results in very slow transfer speed. 10 MB/s while AFP hit over 100 MB/s for the same file.
 
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The QNAP TVS-872XT is indeed a great NAS/DAS solution. I have it spec'd with 10TB HGST drives in Raid6, and NVMe SSDs in Raid0 for caching. I connect via Thunderbolt from my Mac Pro, and the NAS is also connected via GigaBit Ethernet to the rest of my LAN.
 
It works - didn't work with Catalina - but after 12 days without having a reboot, macOS 10.16/11 worked fine.
 
I mount my NAS shares on the desktop using SMB, and my NAS is connected as a DAS to my Mac Pro via Thunderbolt. In testing transfer speeds yesterday I noticed file transfer has become slower, from 900MB/s to about 600MB/s. Certainly enough to notice it.
The QNAP TVS-872XT is indeed a great NAS/DAS solution. I have it spec'd with 10TB HGST drives in Raid6, and NVMe SSDs in Raid0 for caching. I connect via Thunderbolt from my Mac Pro, and the NAS is also connected via GigaBit Ethernet to the rest of my LAN.
I am a bit confused. It's impossible to achieve 900MB/s via SMB with just Gigabit Ethernet.

Do you mean that's the Thunderbolt speed? I think OP is looking for SMB performance data, not Thunderbolt.
 
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I am a bit confused. It's impossible to achieve 900MB/s via SMB with just Gigabit Ethernet.

Do you mean that's the Thunderbolt speed? I think OP is looking for SMB performance data, not Thunderbolt.
Hes probably using a Thunderbolt to 10GbE adapter on his NAS. I am with mine.
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It works - didn't work with Catalina - but after 12 days without having a reboot, macOS 10.16/11 worked fine.
So can I take from this that you have an uptime of 12 days without SMB throwing a rod on Big Sur? That is pretty decent.
 
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I am using the SMB protocol to mount my NAS shares, and the connection between my Mac Pro and my NAS is Thunderbolt...
 
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I have no problem in Catalina, but anyway, I did some SMB test after updated to Big Sur beta 2. 100MB/s straight away on a direct Gigabit Ethernet connection from Mac Pro 5,1 to my QNAP NAS.
 
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Wow - native? Had no idea that was available.
QNAP has been doing it for years. Speed is insane, even better than 10GbE. Some people have problems with stability, but my setup has always been rock-solid. once the network connection has been established via Thunderbolt, you chose how to mount the shares, and I moved from AFP to SMB a year ago. SMB has been faster, but with the Big Sur update, SMB has taken a hit...
 
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QNAP has been doing it for years. Speed is insane, even better than 10GbE. Some people have problems with stability, but my setup has always been rock-solid. once the network connection has been established via Thunderbolt, you chose how to mount the shares, and I moved from AFP to SMB a year ago. SMB has been faster, but with the Big Sur update, SMB has taken a hit...
Beautiful. I love TCP/IP over rad non standard media. So cool.
 
Yes, super slow on my testing. I have a 10GbE connection to my NAS and it doesn't perform very well. I am getting 10MB/s maximum speed when downloading and about 600MB/s when uploading.
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On Catalina it was 1GB/s both ways (up/down).
 
Something has changed - this was something I tested, and I had the full speed up and down.

The only thing different is I'm on Beta 2 - and now seem to be capped with the download.
 
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Good to hear it improved that quick, probably had forgot to remove some extra debug code or something.
 
Well, namely, it actually works now. Listing directory contents and copying files to/from the server actually happens within a reasonable amount of time.
Would you happen to be using anything ultrafast like 10GbE or regular gigabit?
 
Would you happen to be using anything ultrafast like 10GbE or regular gigabit?

This was over a (fairly strong) wifi connection. It was still clearly a network drive, but just browsing in Finder felt a lot more usable.

Mind, I haven't used either Catalina or Big Sur all that extensively. But I thought the SMB performance I saw in Big Sur was an improvement over even Mojave—which, let's be honest, was already pretty bad. SMB in macOS has been going downhill for a long time, and this felt to me like the first time I'd seen the trend reverse.
 
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This was over a (fairly strong) wifi connection. It was still clearly a network drive, but just browsing in Finder felt a lot more usable.

Mind, I haven't used either Catalina or Big Sur all that extensively. But I thought the SMB performance I saw in Big Sur was an improvement over even Mojave—which, let's be honest, was already pretty bad. SMB in macOS has been going downhill for a long time, and this felt to me like the first time I'd seen the trend reverse.
that is such good news. thanks.
 
But if SMB was going down, and AFP is deprecated, which network protocol with authentication was left ? I don't consider NFS.
That’s the scary part. Apple is nothing of not doubling down on SMB with ARM Macs SMB server mode replacing target disk mode in firmware. It feels like a lot of mold was allowed to grow up to Big Sur and maybe now they’re getting out the Lysol.
 
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