On our file server we have one file system that has 261GB of used space
in 1.3 million files.  It takes about 15.5 hours to back up and for the
last 12 hours only that FS and a sister FS that's about 75% of its size
are being backed up.  This is on a Windows 2K server with NetWorker
7.2.2 client.  It's backed up to a NetWorker 7.2.2 Server to one AIT-4
tape (about 25 M/Sec maximum throughput).  During that last 12 hours the
average throughput is around 7-8 M/Sec even though the tape drive is
capable of 3-4 times that.

So I think the number of files has a significant effect on the how long
a backup takes regardless of the OS in use.

Dave

David Werth
Garmin AT, Inc
Salem, Oregon
dave.werth<at>garmin.com

-----Original Message-----
From: EMC NetWorker discussion [mailto:NETWORKER AT LISTSERV.TEMPLE DOT EDU] On
Behalf Of Allan Nelson
Sent: Tuesday, December 04, 2007 8:29 AM
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Subject: Re: [Networker] NetWare throughput

Hi 
I'd be interested in the asnwer to this too.
We basically have the same issue - a 380GB volume which takes about
15-16 hours to backup.
My hunch is that it's the number of files (1.2 million) or the poor
Netware client (7.2).

I've also setup load balancing on 2 GBe NICs but it doesn't really help.
The bottleneck seems to be trawling through the file system.

Be interesting if anyone is getting much better throughput than this on
Netware with similar sized volumes/number of files.

Cheeers... allan.

>>> LPamintuan AT REGINA DOT CA 04/12/07 15:11 >>>
Fellow admins,
 
Just need to find out if there is something like 'bigasm' on Windows and
Unix servers which I use on my NetWare clients to test backup
throughput. Somehow to backup 500 GB of data, it is taking almost 24
hours to complete. This NetWare server is a Dell PE 2850 with quad
processor and 8 GB of RAM and connected to a GB network.
 
My environment is:
Networker server v7.3.3 on Red Hat Linux ES 4 backing up to disk
devices.
NetWare client/server v7.2 on NetWare v6.5 support pack 6.
 
Any help or advise is greatly appreciated.
 
regards,
 
 
Librado Pamintuan
Technical Support Analyst II
I.T.S
City of Regina

Phone:          (306) 777-7573
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eMail:            lpamintuan AT regina DOT ca 


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