ADSM-L

Re: MVS ADSM Server

2015-10-04 17:46:03
Subject: Re: MVS ADSM Server
From: Nathan King <nathan.king AT USAA DOT COM>
To: <ADSM-L AT VM.MARIST DOT EDU>
>We're also in this scenario. ADSM MVS (Open Edition) with ATM backbone and
>again rarely see over 1.5 - 2Gb/hr on backups, the only exception is in the
>case of large flat files such as database dumps where we have seen it go as
>high as 4Gb an hour! wow! We have a very small Risc/6000 server
>(Uniprocessor w/512Mbyte Ram) on the same ATM backbone which peforms about
6
>times better!!!
>
>We know that there are defnitely a lot of issues with TCP/IP performance on
>MVS. We backup over 1,000 clients each night to 5 ADSM Servers spread
>throughout the sysplex and frequently get lost client tcp/ip sessions
during
>the course of the night and generally poor performance. TCP/IP on MVS just
>plain stinks. I've lost count of the fixtests, ptfs and hipers that have
>been applied to both TCP/IP and ADSM in an attempt to get around these
>problems. IBM really seem to be chasing their own tail on this one and I
>don't expect TCP/IP on MVS to improve for some time.
>
>One thing we did do which helped a lot was reserving the appropriate tcp/ip
>sockets on MVS for use exclusively by ADSM. This did provide a lot more
>stability. Perhaps you've been smart enough to do this already. The even
>smarter thing to do would be to migrate off MVS to AIX / NT.
>
>Regards,
>
>Nathan
>
>
>
>
>
>
>
>
>
>        -----Original Message-----
>        From:   buser andreas [SMTP:andreas.buser AT Basler DOT ch]
>        Sent:   Tuesday, March 02, 1999 4:13 AM
>        To:     ADSM-L AT VM.MARIST DOT EDU
>        Subject:        Re: MVS ADSM Server
>
>        Hi Virginia,
>
>        we are also locking at ATM for our S/390 Server.
>
>        Do you really get only 1.5 -2 GB per Hour??
>
>        We get 1 to 1.7 GB/Hour already on a 16 MB Tokenring (If everthing
>works
>        well).
>        I would expect ATM to give at least 20 GB/Hour.
>
>        Have I missed something or what kind of OSA do you have?
>
>        ___________________________________________________
>
>        Kind Regards
>        Andreas Buser
>
>        Tel: ++41 61 285 73 21  Fax: ++41 61 285 90 27
>
>        Email: Andreas.Buser AT Basler DOT ch
>
>        Address:
>        Basler Versicherungsgesellschaft
>        Andreas Buser
>        Abt. Informatik
>        Aeschengraben 21
>        4002 Basel
>        Switzerland
<Prev in Thread] Current Thread [Next in Thread>