Re: [Veritas-bu] NDMP performance tuning (NetApp)

We get over 100MB/s to LTO4 going direct. You take the load off the NIC/media server and you should see significant performance increases. Win/win imho.

Geoff Stafford

Barclaycard US

Data Protection Team Manager

office:

mobile:

Date: Sun, 01 Mar 2009 20:42:19 +1100

From: Glen Vassileff <Glen.Vassileff AT Sun DOT COM>

Subject: [Veritas-bu] NDMP performance tuning (NetApp)

To: veritas-bu AT mailman.eng.auburn DOT edu

Message-ID: <49AA587B.1000002 AT sun DOT com>

Content-Type: text/plain; charset="iso-8859-1"

We've been struggling to tune up remote NDMP backups to windows media server with LTO-4 and disk storage units attached across 1Gb network.

So far we've been getting around 25-30MB/s (40 at the very best with 2 streams to 2 tape drives) with 16 buffers x 64k each (or 63k each).

* I wonder if anyone has experienced better performance and what

parameters have been used.

* Is there anything else we should try / tune on either NetApp or

NetBackup side (so far we've been playing with Netbackup buffer

sizes only).

* What can we expect if we are to connect LTO-4 fibre drives

directly to NetApp? Is it worth the effort in terms of significant

performance improvement?

Regards

Glen

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