Go to a disk staging area 1st - then stream at good speed
to your LTO...
Cheers
Christo
=================================================================
Dear Marc,
I am runnin w2k dual p4 1GB mem 3583 scsi based.
The network is GB.
Right now I am tunning
tcpwindows size
buffpoolsize
txnbytelimit
movetresh
movesize
txngroupmax
The filesystem is filed with small files from 256kb to 15 mb.
The higest performance figure was:
2.126.68 network
886,00 aggregate
FTP does 20 MB a sec ???
So maybe my LTO is performing lousy
( give me magstar any day for small files )
Any sugestions ?
Best Regards,
Koen Willems
>From: Mark Stapleton <stapleto AT BERBEE DOT COM>
>Reply-To: "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>
>To: ADSM-L AT VM.MARIST DOT EDU
>Subject: Re: performace figure Gigabit network
>Date: Mon, 11 Nov 2002 16:29:51 -0600
>
>From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU]On Behalf Of
>Koen Willems
> > Can anybody give me an performance figure on restores speeds of a w2k
> > user directory with lots of small files on a Gigabit ethernet work.
> > I am tunnin resores and want to know wich performance is to be
> > expected on gigabit...
> > W2k + LTO + GB
>
>As with any performance question, it entirely depends upon the file and
>network environment. There are so many variables that asking a generic "how
>fast should it be?" is rather a pointless pursuit.
>
>Instead, follow good practices all around. Tune your server OS to optimum
>file I/O, clear your network of bottlenecks with best practice standards,
>and schedule TSM activities to even out the load as much as possible. If
>you're buying a new server for TSM, buy one with decent memory and CPU
>resources.
>
>If you don't do these things (or don't know how), no amount of fiddling
>with
>TSM is going to give you quality throughput speeds. The #1 reason (in my
>experience) for poor throughput in TSM is bad and/or poorly maintained
>networks.
>
>--
>Mark Stapleton (stapleton AT berbee DOT com)
>Certified TSM consultant
>Certified AIX system engineer
>MCSE
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