If the switch-to-server links are saturated, you can gang several of
them together with etherchannel.

It's too easy to blame "the network" for everything, including
inadequately cold soda in the vending machine. So before blaming the
network, make sure that the TSM server processor is not the actual
bottleneck. I have also relieved what appeared to be network bottlenecks
by adding TSM server memory. We have also seen bottlenecks in the links
to the TSM server's disk subsystem. If these kinds of server issues are
the bottleneck, dedup will just make it worse.

And as usual, remember that each time you remove a bottleneck, you just
expose another one - which could actually be the network. If you can't
back up as much as you want, look at the whole system, not just the
network.

Roger Deschner      University of Illinois at Chicago     rogerd AT uic DOT edu


On Thu, 15 May 2014, Tom Taylor wrote:

>Thanks for all the advice, I am talking about WAN traffic.
>
>
>
>
>
>
>
>
>Thomas Taylor
>System Administrator
>Jos. A. Bank Clothiers
>Cell (443)-974-5768
>
>
>
>From:
>Bent Christensen <BVC AT COWI DOT DK>
>To:
>ADSM-L AT VM.MARIST DOT EDU,
>Date:
>05/15/2014 08:54 AM
>Subject:
>Re: [ADSM-L] Bandwidth
>Sent by:
>"ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>
>
>
>
>Hi Thomas,
>
>Just to be sure, are you talking about LAN or WAN backup traffic? Is your
>bottleneck in the TSM-client-to-switch connection or the
>switch-to-tsm-server connection?
>
>If TSM is saturating your WAN lines, looking into dedup and compression is
>the best you can do. If your problem is within a LAN you might have to
>reconsider your backbone and network design, if that is not an option
>spreading the client start times might do the trick.
>
>But there is no such thing in TSM as bandwidth throttling like in i.e.
>Symantec Netbackup.
>
> - Bent
>
>
>
>
>
>-----Original Message-----
>From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
>Tom Taylor
>Sent: Wednesday, May 14, 2014 5:56 PM
>To: ADSM-L AT VM.MARIST DOT EDU
>Subject: [ADSM-L] Bandwidth
>
>Good morning,
>
>        I run TSM 6.3.4
>
>
>How do I throttle bandwidth so that the clients don't choke the network
>during backups. I have already set a large window for the clients to use,
>and I am reading about client side de-duplication, and adaptive file
>backup. Are these the only two avenues to reduce the bandwidth used by
>TSM?
>
>
>
>
>
>
>
>
>Thomas Taylor
>System Administrator
>Jos. A. Bank Clothiers
>Cell (443)-974-5768
>