Hi Brian,

It might be worth asking your AIX support person  why the mksysb is 1.9gig
in the first place.
We have an RS/6000 SP with 9 nodes and each mksysb is only about 300M. The
mksysb should only really contain the AIX operating system.

Jason Morgan
Technical Support Analyst
Blaenau Gwent C.B.C


> -----Original Message-----
> From: Christo Heuër [SMTP:christoh AT ABSA.CO DOT ZA]
> Sent: 13 January 2000 14:32
> To:   ADSM-L AT VM.MARIST DOT EDU
> Subject:      Re: MKSYSB and ADSM
> 
> Hi Brian,
> 
> Sorry I'm only responding now -I'm a bit behind in my E-mail.
> 
> You didn't mention how this AIX node is connected to the OS/390
> server - network wise...
> 
> What you can do to test the throughput you are getting and if
> the problem is network related or ADSM related is to do an
> FTP from the AIX machine to your OS/390 machine of about
> a 200M file. Check the kb/sec stats at the end of the FTP.
> Now backup the same 200M file with ADSM and compare the
> time taken to do this - if they are roughly the same your
> problem is with the network.
> 
> A while back we had pathetic performance from one of our
> SP/2 nodes directly attached to the OS/390 system via
> ESCON. It turned out that the static routing table on the
> TCP/IP started task on OS/390 was changed so that the default
> route for return IP traffic was going across an IBM3172 with
> a 4M/bit connection to the LAN.
> 
> You can verify the route and return path your ip traffic is
> taking by doing a ping -R from your AIX machine to OS/390.
> 
> Let me know if this has helped.
> 
> Regards
> 
> Christo Heuer
> ABSA Bank
> Johannesburg
> SOUTH AFRICA
> 
> 
> > We are attempting to backup our MKSYSB information to ADSM our
> environment
> looks
> > lioke this.
> >
> >      RS600 7025 - F50
> >      AIX V4.3.3
> >      PCI bus.
> >      ADSM client 3.1.0.7
> >      ADSM server OS/390 3.1.2.40
> >
> >    We create the mksysb file but when we back it up I have horible
> performance.
> > I am not an AIX support person but and ADSM server support person. Last
> night it
> > took us over 15 hours to backup a 1.9gb mksysb file. I hav looked at
> >     TCPBUFFSIZE
> >     TCPWINDOW
> >     TNXBYTELIM
> >
> >    Any information on this would be great. We have several other RS600's
> that we
> > backup without problem it is just htis server with the mksysb data on it
> that is
> > verybad,Any help here would be great or if someone can point me int hte
> right
> > direction to look into this problem. TIA Brian