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snowmizer1

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snowmizer1

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November 18th, 2013 07:00

Data Domain Issue Accessing Shares

I am setting up shares on our DD160 for some SQL backups I'm going to be running. I 6 Windows 2008 R2 64-bit servers plus 4 Windows 7 laptops that need to access these shares. When I access the shares (using \\datadomain\share and \\datadomainip\share) from my laptop or 3 of the 6 servers I can access the shares fine. However, on three of my servers I get a network error (0x80004005) and can't access the shares. There is no restriction limiting access to certain clients or users in the share configuration. I have verified that "Client for Microsoft Networks" is enabled on the problem servers, IPv6 is disabled, the firewall is turned off on each of these clients, I've verified the registry settings for the network provider, and the servers can all ping the DD160 by DNS name and IP, nslookup works on these servers as well.

Any suggestions why these 3 servers can't access the shares when my laptop and 3 other servers have no problem?

Thanks.

  • dynamox

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    Posted November 18th, 2013 08:00

    try disabling "client SMB signing"

  • snowmizer1

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    Posted November 18th, 2013 09:00

    I haven't tried that yet. How do I do this? How can I verify if it's disabled?


    Thanks.

  • dynamox

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    Posted November 18th, 2013 20:00

    google smb client signing, you will find some technet articles ..it's registry key that you have to change.

  • snowmizer1

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    Posted November 26th, 2013 05:00

    Thanks dynamox. I disabled this and then rebooted and now all of the servers can access the Data Domain shares.

  • dynamox

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    Posted November 26th, 2013 06:00

    good deal

  • murillo2

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    Posted December 4th, 2013 06:00

    Just to add something to this thread...


    SMB signing is supported from DDOS 5.2.4.1

    To enable it

    cifs option set "server signing" auto

    For more information, please review the releases notes of DDOS 5.2.4.1

    Regards

    Gonzalo Murillo

  • dynamox

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    Posted December 4th, 2013 07:00

    support told me enabling that option on DD might have negative impact on performance.

  • murillo2

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    Posted December 5th, 2013 23:00

    And that cannot be more true...

    But imagine is a security requirement in your organization...

    You can still enable it and it will work, although performance will decrease.

    Cheer,

    Gonzalo

  • dynamox

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    Posted December 6th, 2013 03:00

    btw, smb signing is supported on 5.1 as well.

  • murillo2

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    Posted December 9th, 2013 05:00

    Officially only in 5.2.x

    https://my.datadomain.com/download/kb/all/smb_signing_not_currently_supported.html

    I know the options were in 5.1, but officially  5.2.x

    Regards,

    Gonzalo