Networker

Re: [Networker] Performance Tuning backup

2007-07-26 10:59:41
Subject: Re: [Networker] Performance Tuning backup
From: Yaron Zabary <yaron AT ARISTO.TAU.AC DOT IL>
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Date: Thu, 26 Jul 2007 17:55:59 +0300
E Gold wrote:
Hi all

I run legato 732 on win2003.
I have 6 fiber LTO2 tape drives.
The server has 4 cpus and 4GB ram, and 5 Gigabit nic cards in a team.

All my legato server settings are the default. Tape drive target sessions
is 4.

I backup my lotus server daily, its 800gb and it takes 10 hours.

How can I increase the speed of this backup with tuning legato?

I do not think the network is the bottleneck as I recently added more nic
cards and it didn't help.

Should I change target sessions or parallelism?

  Let's do some math:

  You do 800Gb/10h = 22Mb/s.
  GigE is 1000/8=125Mb/s.
  LTO-2 is 30Mb/s (native).

For your current Lotus needs (and some growth) a single GigE link is enough.

You didn't describe how many sessions the Lotus server (or its backup agent) can do at the same time. I would also suggest that you will try to monitor the performance on the Lotus server and see if you can see any CPU or disk I/O bottlenecks on it.


Thanks,


Evan Gold
Financial Security Assurance
31 West 52nd Street
New York, New York 10019
212.893.2762

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--

-- Yaron.

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