Anurag Sharma

May 3, 2013 10:18 AM

Hi Dan,

I dont know if my rsponse on this is still relevent.

First of all there are 2 kinds of NDMP backup.
Local NDMP in this filer accesses the library locally via scsi or fc
Remote NDMP one filer sends the backup data to library connected to another filer

When you send the backups to library connected to nbu media server it is called 3 way (which is a form of remote) ndmp.


Now coming to performence on isilon
It will be much better almost 10times of what you are getting now as it is going to be disk bases however connection should be over 10Gbe also i would say decide whether you want backups or archive....if u just want to archive go with data domain dd 990 archiver which gives arhives with dedupe.

Anurag

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Date: Tue, 26 Feb 2013 15:46:08 -0500
From: danno AT umich DOT edu
To: veritas-bu AT mailman.eng.auburn DOT edu
Subject: Re: [Veritas-bu] NDMP/isilon throughput question


...and as i read some docs I think I've gotten the meaning of 2-way and 3-way NDMP confused. 

current setup:  EMC NS120's are connected by fibre channel to the tape drives.  netbackup server is only doing control, no data traffic goes through the netbackup server.

proposed setup:  isilon sends data over ethernet to netbackup server, which writes data to tape via fibre channel. 

--
Dan Pritts
ICPSR Computing & Network Services
University of Michigan
+1 (734)615-7362

_______________________________________________ Veritas-bu maillist - Veritas-bu AT mailman.eng.auburn DOT edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu

Dan Pritts

February 26, 2013 2:17 PM

Hi all,

I'm looking for a bit of advice here as we plan a migration.

I'm running netbackup 7.0 (plan to upgrade), win2008r2, IBM LTO4 tape drives in a Dell (not sure of OEM) library. Single server, dell R610, 2x intel e5620, 16GB ram.  Plenty of RAM & CPU.

Interface to tape drives is fibre channel; using a qlogic 4Gb card.

Currently I have two EMC Celerra NS120's, and I use 3-way NDMP direct to tape to back them up.  This works reasonably well and I get reported throughput of 90MB/sec on multiple streams.

I'm looking at buying an Isilon system (3x X200), and am considering whether to continue to use 3-way NDMP (and buy isilon's fibre channel backup appliance to do so), move to 2-way NDMP, or possibly something else.

In particular I'm wondering about what kind of performance I can expect with 2-way NDMP.

I am imagining connecting one of the isilon nodes direct to the netbackup server via a dedicated 10Gb ethernet link, and adding a dual-port 4Gb fibre channel card.  WIth this combo, The nominal interface speeds are enough to saturate all 4 tape drives.  But can a netbackup media server (with the master running too) push that much data through?  Or some large percentage of it?

I saw some discussion of isilon in the list archives, one person suggested this kind of config, and skipping the isilon "accelerator."  But that was several years back and didn't really discuss throughput.

Any other recommendations welcome.

thanks
danno