Tuning parameters for Server Message Block (SMB)
You must verify that SMB 3 is enabled to gain SMB Multichannel capabilities. SMB Multichannel enables the file servers to use multiple network connections simultaneously.
Configure the parameters as specified in the SMB tuning parameters table, on the backup host to gain better throughput. Note that the mentioned values for the parameters are from the test environment. You can set these values based on the configuration of the backup hosts.
NetBackup administrators can also refer to the SMB vendor's documentation to configure the parameters in the SMB tuning parameters table.
Table: SMB tuning parameters
Parameters | Values |
|---|---|
Set-SmbClientConfiguration -ConnectionCountPerRssNetworkInterface | 8 |
Set-SmbClientConfiguration -DirectoryCacheEntriesMax | 4096 |
Set-SmbClientConfiguration -DirectoryCacheLifetime | 60 |
Set-SmbClientConfiguration -EnableBandwidthThrottling | 0 |
Set-SmbClientConfiguration -FileInfoCacheEntriesMax | 32768 |
Set-SmbClientConfiguration -FileInfoCacheLifetime | 60 |
Set-SmbClientConfiguration -FileNotFoundCacheEntriesMax | 32768 |
Set-SmbClientConfiguration -FileNotFoundCacheLifetime | 60 |
Set-SmbClientConfiguration -MaxCmds | 32768 |