SMB NAS Share painful

Question

SMB NAS Share painful

Hello,

Has anyone else found that since upgrading to BigSur the speed at which I can talk to my NAS via an SMB share is painfully slow?

Yet, if I try from a MacMini, still running Catalina, it works much faster?

Thanks

Posted on Nov 18, 2020 7:23 AM

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Answer 1

Top-ranking reply

musicandmacs

Level 1

21 points

Dec 7, 2020 2:53 AM in response to David English

I found a resolution that solved the problem. I have to admit that I fully don't understand this resolution. All I know is that it worked!!!! I now access my NAS and I can also access all other devices connected to my network. After installing Big Sur, I initially couldn't, although in Catalina I could.

OPEN TERMINAL.APP and run the following:

sudo kextload /System/Library/Extensions/smbfs.kext

sudo mkdir -p /private/var/db/mds/messages/501/se_SecurityMessages

sudo chown {username} /private/var/db/mds/messages/501/se_SecurityMessages

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Answer 2

Roox

Level 1

13 points

Dec 3, 2020 11:30 PM in response to David English

Well, I can't suggest an solution - but I'd like to share, that on a newly installed machine (alright - apple silicon ;-) on an ethernet connection it did a blazingly fast first backup onto my nas. Worked like a charm, speed definitely not an issue.

Synology on most recent DSM.

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Answer 3

Dec 4, 2020 7:25 AM in response to Roox

Thanks for the info.

I tried to copy a 4Gb file from my Mac, running Big Sur, to my WD MyCloud share that I have mapped to the desktop.

It literally took over 4 hours to copy.

Or should I say that I watched it for about 4 hours and then went to bed, so it could have been longer.

I downgraded back to Catalina, and did the exact same copy of the file, and it took less than 10 minutes.

That was the same Macbook pointing at the same NAS folder.

Weird!

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Answer 4

Dec 6, 2020 11:04 PM in response to Roox

The protocol selected was afp.

Nothing changed between Catalina and Big Sur regarding the connection to the NAS.

With the WD MyCloud NAS, I select the NAS name from my Finder Network window, and the shares are there to select.

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Answer 5

Roox

Level 1

13 points

Dec 8, 2020 2:45 AM in response to David English

AFP is the culprit. It has been a while since Apple starte support afp over smb to support homogenous networking, with BigSur the support for AFP has ended. Change the protocol to smb (smb3 if possible, Big Sur supports it anyway) and you should be up and running faster than before due to less protocol overhead.

Don't forget to change it on the NAS as well!

Recent NAS usually support TimeMachine over SMB (works for me), so I don't see why to stick to afp (don't know about TimeCapsule etc.)

Please let us know, wether that could solve your problem.

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Answer 6

Roox

Level 1

13 points

Dec 8, 2020 6:48 AM in response to ichoderso

All right, reread it - AFP can still be used with the Mac being the client, sorry.

So what else (other than switching to smb) may help the original poster, who has a deteriorating Transmission rate when updating to BigSur?

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Answer 7

Nov 23, 2020 11:22 PM in response to David English

I found the solution!

I downgraded back to Catalina, and it works perfectly well!

Won't be upgrading to BigSur until Apple fix the issue!

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Answer 8

Roox

Level 1

13 points

Dec 5, 2020 12:53 AM in response to David English

That is disturbing! I'd look out wether some network settings are changed in BigSur that are not reflected on the MyCloud Share. Which protocol do you use?

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