Slow file backups to tape using SMB

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Slow file backups to tape using SMB

Veeam Logoby aich365 » Thu Jul 26, 2018 12:25 pm

Case # 03105453

Tape jobs were running at 40MB/s instead of the usual 100+MB/s

SMB signing was turned on.
I have disabled this and jobs have resumed their normal speeds.
This signing could be set in 2 places - Group Policy or the registry
Group Policy (preferred method)
Computer Configuration, Policies, Windows Settings,Local Policies, Security Options,Microsoft network client: Digitally sign communications (if server agrees)

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\LanmanWorkstation\Parameters
EnableSecuritySignature (1)
RequireSecuritySignature (0)

It can be viewed in Powershell by running
Get-SmbClientConfiguration
Look out for
EnableSecuritySignature : True
RequireSecuritySignature : False

As long as RequireSecuritySignature is set to false (0) then it is turned off.
aich365
Service Provider
 
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Full Name: Clive Harris

Re: Slow file backups to tape using SMB

Veeam Logoby Dima P. » Thu Jul 26, 2018 3:11 pm

Hello Clive.

Please keep working with our support team and let us know if you need any further assistance. Meanwhile, I'll ask QA team to review your case. Cheers!
Dima P.
Veeam Software
 
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Full Name: Dmitry Popov

Re: Slow file backups to tape using SMB

Veeam Logoby aich365 » Thu Jul 26, 2018 3:20 pm 1 person likes this post

Hi Dimitry

The service desk were very helpful but in the end it was tracked down by Synology.
I only pasted this info as an FYI in case someone has a similar problem.

Thanks

Clive
aich365
Service Provider
 
Posts: 40
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Joined: Wed Aug 10, 2016 11:10 am
Full Name: Clive Harris

Re: Slow file backups to tape using SMB

Veeam Logoby Dima P. » Fri Jul 27, 2018 10:42 am

Clive,

Glad you nailed it and thank you for sharing the update. Cheers!
Dima P.
Veeam Software
 
Posts: 8233
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