SMB on Synology NAS super slow AFP works fine

Discussion in 'macOS' started by whitedragon101, Nov 19, 2017.

  1. whitedragon101 macrumors 65816

    Joined:
    Sep 11, 2008
    #1
    OS : Sierra
    System : Macbook Pro 17" Early 2011
    Connection : Gigabit ethernet

    I have seen so may threads on this but no definitive answer or solution.

    When I connect to my synology NAS I get a download speed of 14MB/s using SMB (server is set to allow SMB3 with a minimum of SMB2 large MTU). However, when I use afp I get the full 60-90MB/s .

    Considering Apple say SMB is supposed to be the default now this is pretty strange. Does anyone know of a fix? Did Apple fix this in High Sierra?
     
  2. Marshall73 macrumors 65816

    Marshall73

    Joined:
    Apr 20, 2015
    #2
    Always seems to be like that on Synology. QNAP boxes are the other way, fast SMB slow AFP performance.
     
  3. Mumford macrumors regular

    Mumford

    Joined:
    Oct 8, 2006
    Location:
    Altadena, CA
    #3
    Just tested on my Synology: copied down a 23GB file at 60MB/s over SMB. The settings on my Synology were min: SMB1, max: SMB2. But I bumped those to min: SMB2 with large MTU, max: SMB3. Transfer rate stayed the same.

    Only things I can recommend are... make sure you're up to date, and try changing your min to SMB2 (without large MTU) or SMB1.
     
  4. fivenotrump macrumors 6502

    Joined:
    Apr 15, 2009
    Location:
    Central England
    #4
    Apple changed default signing of SMB to off in a High Sierra update, I think 10.13.4
     
  5. boodle macrumors regular

    boodle

    Joined:
    Jun 12, 2004
    #5
    Yes, High Sierra has the proper SMB signing which should fix this. Also see https://support.apple.com/en-us/HT208209
     

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4 November 19, 2017