Hi

I found the normal NDMP backups were slow so I switched to NDMP - SMTAPE backups to speed things up.  That didn't happen because they were slower.  I thought backing up 40 million files on NetApp using smtape would be better.  The normal NDMP backups ran about 20,000 KB/s the smtape version runs about 12-14,000 KB/s.  Media servers have no performance issues as they are not fully utilised and  everything is on a 10Gb/s IP network.

The only thing I have left to play with is SIZE_DATA_BUFFERS_NDMP buffer size.  Currently on the default which is close to the maximium according to http://www.symantec.com/docs/TECH51967.

• Would decreasing the  buffer size would help, given that it is a 10Gb network?
• In NetApp can NDMP be throttled?  The NetApp admins may have throttling turned on
• Is there anything better than this to test NetApp by doing a dump to /dev/null by runing something like

         dump 0f null /vol/vol0

    This test the speed of a dump but not NDMP to /dev/null  

Thanks for your assistance