>From what I've seen, performance highly depends on the power of the
appliance you have and whether or not you are dealing with a
filesystem having lots (10's of millions) of small files or not.  For
example, with our F840, a qtree with 24 million files but only 120GB
but it takes up to 30.5 hours to complete (~1.2MB/sec).  Other qtrees
seem to stream our drives nicely ( ~9.3 MB/sec with AIT 2), which is,
of course, is nothing compared with LTO.  Overall load will also
impact performance to a pretty good extent.

I've also noticed that backups with our R200 will bottleneck on the
5400 RPM ATA disks. :-(  This may partially have something to do with
other activity though.

On Apr 8, 2005 1:12 PM, Chris.Romano AT lazard DOT com <Chris.Romano AT lazard 
DOT com> wrote:
> Does anyone have any idea how much throughput we can expect to get with NDMP
> from a Netapps Filer  using direct attached tape drives?
> 
> We have an ADIC LTO-2 Library with plenty of drives.
> 
> Our Netbackup server has a Gigabit network connection for revceiving the inode
> information from the Netapps Filer.
> 
> Thanks,
> Chris.
> 
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-- 
-Tim