Jonathon,

You do realise that SIZE_DATA_BUFFERS_DISK and NUMBER_DATA_BUFFERS_DISK only
apply to disk storage units?
The settings that apply to tape are SIZE_DATA_BUFFERS and
NUMBER_DATA_BUFFERS.

Look in your bptm logs for "waited for xxxxx buffer".
If xxxxx = "full", then it means the bottleneck is getting data into the
media server from the network.
If xxxxx = "empty", it means the bottleneck is the write operation (be it to
tape or disk)

Regards
Dean

On 8/26/06, Martin, Jonathan (Contractor) <JMARTI05 at intersil.com> wrote:
>
>  All, we're tying to maximize our throughput across gigabit Ethernet and
> playing with the buffers etc to try and get faster numbers.
>
>      *Client Buffer* *NET_BUFFER_SIZE* *NUMBER_DATA_BUFFERS_DISK* *
> SIZE_DATA_BUFFERS_DISK* *KB/sec* 256 262144 *---* *---* 34000 256 2097152
> --- --- 39500 256 2097152 16 --- 37000 256 2097152 16 262144 36000 *512* *
> 2097152* *64* *262144* *40480* 1024 2097152 64 262144 37608 1024 4194304
> 64 262144 37473
>
>
> Netbackup 5.1 Client --> Gigabit Copper --> Cisco Switch --> Gigabit Fiber
> --> Media Server --> Direct Attached SCSI 320 Drive
>
> Here's the results of some testing from this morning on one of my fastest
> servers (as far as disk/processor/memory) are concerned.  It looks like my
> "sweet spot" is about 40MB/sec through Netbackup.  If I try and FTP several
> files directly from this server to the Media Server via the same network
> config to disk I can get close to 60MB/sec.  Am I missing some setting
> here?  Why can't I get even close to duplicating the 60MB/sec I get via
> FTP?  My perfmon shows the server's nic only pushing 45MB/sec or less with
> drops in communication every 10 seconds or so.  I'm missing something, any
> ideas?
>
> -Jonathan
>
> _______________________________________________
> Veritas-bu maillist  -  Veritas-bu at mailman.eng.auburn.edu
> http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
>
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: 
http://mailman.eng.auburn.edu/pipermail/veritas-bu/attachments/20060828/61b2a2f2/attachment.html