What I am thinking is about how long it takes to do the backup. If 
Networker creates a snapshot of the volume and then uses that information 
to write to tape, or is Networker writing directly from the volume like 
any other file system so to speak. If it is a snapshot then time is not as 
important.

Troy Kutil
Phone 262-783-8289
Fax 262-373-5689
Milwaukee Electric Tool



Fazil Saiyed <Fazil.Saiyed AT ANIXTER DOT COM> 
Sent by: EMC NetWorker discussion <NETWORKER AT LISTSERV.TEMPLE DOT EDU>
02/28/2008 12:45 PM
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Subject
Re: [Networker] Long NDMP Backups






Hello,
You heard it right, the NDMP backups create snapshot ( atlest on Netapp) 
but this snapshots are temporary in nature and they are only being used 
for backup, in case of DR you will need ndmp backups to restore from, 
unless netapp is replicated it wont help to do snapshot alone.
Also, the backups will effect your system performance even while utilizing 

snapshots, so you do want either good NDMP solution with direct attached 
tapes or robust network if you use DSA method so that you can finish the 
backups in timely manner.
HTH



tkutil <networker-forum AT BACKUPCENTRAL DOT COM> 
Sent by: EMC NetWorker discussion <NETWORKER AT LISTSERV.TEMPLE DOT EDU>
02/28/2008 11:05 AM
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Subject
[Networker] Long NDMP Backups






Thanks to every one for all of your great suggestions. Our first step is 
to team the network connection on the Networker server and the switch to 
increase throughput as well as implement jumbo frames. After that we'll 
determine what other suggestions to implement. 

One thing that I'm curious about that may make this whole subject a moot 
point is how Networker handles NDMP. I can't remember where I heard this, 
most likely from this forum, but does Networker NDMP create a snapshot of 
the volume and then backup that snapshot? I see that in the logs and if 
that is so, do I care how long the backup takes if it is truly a snapshot 
and not the live data?

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