[Samba] Need SMB server / client tuning help

Swapneel More swapmore15 at gmail.com
Fri Apr 7 11:16:52 UTC 2023

Although we reached out to Hitachi support, we didn't specifically request
for the smb.conf file from them. As a result, we're uncertain about the
status of their Samba version, whether it's in standard or mangled form,
and whether they're capable of providing us with the smb.conf file.

I was wondering if there are any specific parameters or information that we
should check from the HNAS samba server side to address the slowness issue
we're experiencing with a particular share that contains a large number of
smaller files, apart from the smb.conf file. Additionally, I was wondering
if you could advise on the specific details we should look for in the SMB
protocol perspective when analyzing network traffic captures using

Although Microsoft provides the robocopy tool, it has been observed to have
lower throughput when copying a large number of smaller files from the SMB

I also wanted to ask if increasing the number of connections between the
client and server and using multiple NIC cards at the SMB client side for
multichanneling could potentially improve the performance, especially
copying millions of smaller files from the share. Or are there any
limitations within the SMB protocol when copying a large number of smaller
files from the share?

I appreciate any advice or guidance you can provide on this matter. Thank

Thanks & regards,
Swapnil M

On Fri, Apr 7, 2023 at 3:32 PM Rowland Penny via samba <
samba at lists.samba.org> wrote:

> On 07/04/2023 09:48, Swapneel More wrote:
> > Thank you very much for your response Rowland. I really appreciate it.
> >
> > Please find the required details below.
> > Windows SMB client has below OS specifications:
> > OS Name:                   Microsoft Windows Server 2016 Standard
> > OS Version:                10.0.14393 N/A Build 14393
> > OS Manufacturer:           Microsoft Corporation
> >
> > SMB server:
> > It is a Hitachi NAS(HNAS) device box.
> > We don't know much about its SMB configuration as it has a minimal UNIX
> > based OS version and standard RHEL commands do not work on it. So, we
> > are not able to run 'testparam -s'
> >
> > Thanks & regards,
> > Swapnil M.
> >
> >
> Sorry, but without further information, I do not see how anyone can help
> you. Your NAS may be running Samba, but if such a standard command as
> 'testparm' isn't available, then this seems unlikely, or it is a much
> mangled version of Samba. If it is running a standard Samba version,
> somewhere there will be a smb.conf file.
> I take it that you have tried Hitachi support ?
> You may be able to run a trace on the network traffic between the two
> machines, perhaps this could provide more information.
> Rowland
> PS please do not 'CC' me, or reply to 'all', just reply to the list.
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