Hi,
There are a lot of posts on the forum regarding performance, basically they all require you to test the various components in the data path i.e. the disk performance on the client, the network transfer speed, and the tape drive performance on the media server.
On the client you can use the bpbkar executable with the -nocont option to perform a backup to /dev/null. This will give you the maximum transfer speed that your client can produce.
You should then take the same data that you tested on the client and copy/ftp it to the media server. This will once again give you a transfer rate.
On the media server, test the speed you can get from its disk using the same data (just to make sure its higher or equal than the client). Then perform an actual backup to tape of the data, and retrieve the transfer rate for the tape.
You'll then have 3 figures that will give you an indication of where the bottle neck is. If its lowest on the client you'll have to address your issue there, if its lowest on the network you'll have to refer the issue to your network team (or possible adjust your NET_BUFFER_SZ). If its lowest on the media, you can adjust the NUMBER_DATA_BUFFERS and SIZE_DATA_BUFFERS to try and improve the performance.
R
