ADSM-L

Re: backup to disk stg vs tape stg.

2002-01-09 06:19:13
Subject: Re: backup to disk stg vs tape stg.
From: Sotonyi Attila <sotonyi AT MAVINFORMATIKA DOT HU>
Date: Wed, 9 Jan 2002 12:18:14 +0100
Hi,

There're additional parameters which you should try first:

In your client dsm.sys file set these parameters with their values:

Tcpbuffsize
Tcpwindowsize
Tcpnodelay
Largecommbuffers
Txnbytelimit

If it's not help, then you have to check the AIX network parameters
and pools and buffers. If you need additional help, just write.

Üdv,
 Sótonyi Attila
 Certified TSM administrator
 MÁV Informatika Kft.



------------------------------------------------------------
> Hi All,
> Hi All,

> I am running TSM 4.1 on aix server and DLT scallar 1000 library.
> I have a critical client that I would like to backup directly to the
> tape stgpool.
> The performance in that method are 8M/S network and 70K/S aggregated
> transfer rate.
> I would like to improve that performance to be at list 3M/S aggregated.
> I tried to work with the following performance parameters.

> SELFTUNETXNSIZE
> SELFTUNEBUFPOOLSIZE

> but with no success.

> I tried to backup the same client to a disk storage pool and the
> aggregated ware something like 4M/S.
> it's look like a performance problem but I don't know what parameter to
> change.


> Thanks in advance.
> Ofer Ccc.
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