We are in the process of implementing our fisrt NDMP backups for NetApp filers 
using EMC Networker as the backup application. Our main issue is the restore 
functionality. 

In the past our operators have been responsible for restores - performing the 
restore for any client to a suitably sized '/restore' directory on the backup 
servers themselves. This functionality cannot be replicated in the NDMP 
environment as restores need to go to the target client or another NDMP capable 
server.

We can request the operators to restore NDMP data to a /vol/restore directory 
on the filer but there will inevitably be cases when the path is misspelt or 
the recover_to option omitted.

In the past a typo filling the root filesystem on the backup servers was 
inconvenient - on a production NetApp filer I believe it will be catastrophic. 
Similarly omitting the recover_to option will result in the silent overwriting 
of data on disc whereas in the past the operators would have been prompted.

We tried creating a softlink from/restore with various misspellings  to 
/vol/restore on the filer but an NDMP recover, despite indicating success, 
actually failed after 54Mb and created a zero byte target file - so scratch 
that idea!

Does anyone out there know of a way of preventing accidental file overwrites or 
writing to the root volume on an a NAS filer?

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