Watching mine this morning, 2 NDMP backups are running at 110-120MB/s.
They are on 4 gig fiber... what/how is your LTO3's connected?  They are
also direct connects to the storage nodes so they bypass networker. If
you are backing up thru copper [GIG-E] even, you will experience slow
backups.  


-----Original Message-----
From: EMC NetWorker discussion [mailto:NETWORKER AT LISTSERV.TEMPLE DOT EDU] On
Behalf Of Eugene Vilensky
Sent: Monday, February 08, 2010 6:12 PM
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Subject: Re: [Networker] Slow NDMP Backups

> I'm running a level 1 backup on just one Qtree and tape drive is
writing at 11MB/s on LTO3 tape drive. Does that sound OK?

What else is your filer doing at the time of the backup?  What's in
its /etc/messages during the time of the backup?  Do you have enough
spindles to service the workload? How fragmented is the volume (have
you analyzed or ran re-allocation?)  do you have plenty of free space
at the aggr level?  Do you have performance advisor to monitor the
filer while performing the backup?

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