We have had some serious problems with NDMP restores since we went to 6.5. I have been unable to get either NetApp or my backup software company (Oracle - Reliaty Backup) to take it seriously. They both blame the hardware - even though I show the failure with 3 separate tape drives on 3 separate filers and multiple tape images, that all worked at pre-6.5.

So to make the story short - I want to down rev one my filers from 6.5.1R1 to 6.4.5. Once I at 6.4.5, and the restores start to work again - I hope to get some more help out of either of NetApp and/or Oracle.

I have not went with DP on any of the raid groups, so that will not be an issue. But I am a bit concerned about how long it will take.

The filer is a FAS940, it has about 1.2TB of space and about 34 million files. Can anyone give me a hint to how long the revert will take ?

Thanks,

Paul