Recommended number of data buffers for SAN Client and FT media server
For SAN Client Fibre Transport, the effective total number of data buffers is approximately twice the number of buffers that is specified for non-multiplexed backups. The reason is that the specified number of buffers are present on both the SAN Client and on the FT media server.
Note:
It usually does not improve performance to increase memory buffers to a number that is significantly more than the SAN Client Fibre Transport default (16). Such an increase usually causes the majority of the buffers on either the client or server side to be empty.
The default setting of 16 allows 40 concurrent connections. Setting the buffers to 10 allows the maximum number of 64 concurrent connections. See About Linux concurrent FT connections in the NetBackup SAN Client and Fibre Transport Guide for more information.