> Hi, what licenses do i require to backup an NDMP disk system. I know that i 
> require an NDMP client connection license. I am unsure what licenses i need 
> for the tape device.


To backup a compatible NAS using NDMP, you need a NDMP client connection 
license.  There is no license specific if you want to configure an NDMP drive, 
for example the jukebox is licensed as usual.



> Do i need to configure a tape device as an NDMP device to backup the NDMP 
> client or can the data be sent over the network to the networker server and 
> use the existing tape devices.


You do not have to have a backup device connected to your NAS. The backup data 
can be sent via your LAN to a NetWorker backup device on the server or storage 
node.  This is referred to as NDMP DSA.

The advantage of having a backup device attached to the NAS is a better backup 
performance.  The backups are local, and it does not have to go through your 
network (just like setting up a dedicated storage node).  The drawback is that 
you have to have the additional hardware connected to your NAS, or set up the 
SAN so that you can share the device between hosts.



> If i would like the NDMP client data to go directly to tape i would then need 
> to share my tape library. I know that to do this i would require a device 
> sharing license but do i require any other licenses such as dedicated storage 
> node license? 


No...  The NDMP client connection license and the DDS license should suffice.


Of course...  please speak with your sales rep for confirmation.



The following information might be informative to you (You may need to access 
powerlink.emc.com first):


NDMP Client Configuration Demo
https://education.emc.com/main/vod_tech_sup/networker/NDMPcfg.html

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