Veritas-bu

[Veritas-bu] Poor Backup Performance

2002-10-02 12:34:35
Subject: [Veritas-bu] Poor Backup Performance
From: jlkennedy AT amcc DOT com (Jeff Kennedy)
Date: Wed, 02 Oct 2002 09:34:35 -0700
Simon,

Have you tried using a direct attached tape drive with NT Backup?  You
may be able to narrow it down to system or network in this manner.  If
this configuration works well, then it's either network (fcal is still
network... ;-] ) or NBU.  Still a large area but at least it's a start.

~JK

"WEAVER, Simon" wrote:
> 
> Hello Everyone
> You may recall a thread last week, regarding severe poor performance on
> Backups on my Master Server.
> At the time it looked like there was an I/O issue with one of our Compaq
> arrays.
> 
> Well this weekend, a brand new 4100 Compaq Array arrived! This was connected
> to our VIXEL Fibre switch and we created a standard Windows NT Partition.
> 
> Using the SCOPY command, we chucked over several GB's of Data.
> From the Master Server we performed a backup, using NEW BACKUP POLICY - to
> my sheer horror, the backup throughput is still crap!!! We are getting
> around 4 - 700k a seconds, sometimes 800 at a push!!
> 
> The data on this array is simply files/folders, uncompressed (ie: word
> documents, DB files, excel, PPT, jpeg, ect! All offices files really).
> 
> Now I am at a big big loss!!! The main trouble is that to perform a full
> backup of our server last week took 4 1.2 days to backup 550GB Data! Totally
> unacceptable.
> 
> I have also tried doing a backup from our Media Server, who shares the same
> storage unit (Multihosting) but although the throughput starts off quick
> (2.3mb second, then 1.4mb second) it then drops off to around 600k/s -
> similar to what we get on the Master Server.
> 
> I really am looking for some help now. I have spent an awful long time
> trying to figure this out, and I admit I am not the best in the world where
> Netbackup is concerned! At first I thought it was hardware related, but even
> when I try to backup the Masters C: Drive, throughput is still pretty poor!
> Again starts off good, and then drops off!! The Server also has a G: Drive
> inserted into the machine itself (18GB Drive) and again, throughput is poor.
> 
> Is there anyone with any help or suggestions?
> 
> Thanks very much for any input!
> 
> Simon Weaver
> NT Domain Administrator
> Ext. 5544
> Tel: 02392-705544 (Direct Dial)
> Simon.Weaver AT Astrium-Space DOT com
> 
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-- 
=====================
Jeff Kennedy
Unix Administrator
AMCC
jlkennedy AT amcc DOT com

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