On Wed, Sep 2, 2009 at 5:44 AM, tsimerson
<netbackup-forum AT backupcentral DOT com> wrote:
I've been doing NDMP backups to our EMC NS700 without this configuration file. The defaults are assumed if this file does not exist.
I may have missed part of this thread, so excuse my assumptions :-)
When I was doing some testing of a NetApp using NDMP over TCP, I found I had to create and modify /usr/openv/netbackup/db/config/SIZE_DATA_BUFFERS_NDMP. The max size it seemed to use was 262144. I was able to see the size changing when I turned on verbose logging. I also had to modify the NET_BUFFER_SZ. It sounds like you are doing a direct attach so I don't believe this will matter.
On that same subject, anyone have any suggestions for tuning an older EMC Celerra environment? I would like to get my tape buffers up to 256K but can't make heads or tails of the configuration parameters. I don't have much chance to play with the parameter since the documentation indicates a reboot of the data movers is required. These are 24x7 devices.
From what I could find in my NetApp testing, it seemed the SIZE_DATA_BUFFERS_NDMP value was used by the tape and also passed to the array block sizes to send. I didn't find any tuning parameter to use on the array. I'm sure your EMC rep told you the arrays have non-disruptive failover :-) I know all of our sales people alway do .
Jeff
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