VAST Cluster supports SMB3 multichannel, which provides increased network performance for high-throughput streaming workflows. Using SMB3 Multichannel, Windows clients can set up multiple network connections to a single VIP.
A single channel SMB connection uses a single TCP connection with a bandwidth of around 2 GB/s. Multi-channel increases the performance to around 8 GB/s.
The feature is enabled by default and doesn't require any configuration on the cluster.
Follow the instructions below to use this feature on a Windows client.
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Windows
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One or more network interface cards that support Receive Side Scaling (RSS).
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Minimum throughput of 100 MB on all components of the connection between the client and the cluster, including all NICs, cables, switch ports and so on.
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Configure SMB client settings on the Windows host to use multiple connections:
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Run the Windows Powershell application in administrator mode.
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Display the current configuration by running
get-SmbClientConfiguration. For example:
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Run
set-SmbClientConfigurationto change the following parameters as needed so that they are set as follows:-
EnableMultiChannel. Must beTrue. -
ConnectionCountPerRssNetworkInterface. Set to 8 or more. No performance benefit was found by setting the value higher than 8. -
EnableSecuritySignature. Must beFalse.
For example:
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If you have an existing SMB connection to the cluster for the same application that you want to run over multichannel, remove the connection.
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Create a new SMB connection to the desired view on the VAST Cluster.
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