>Roger,
>
>I'm curious...
>
>We have a similar setup. e.g. two Rs/6000 with HACMP. The network adaptors
>fail over fine, the SSA fails over without a problem.
>
>However we have a problem failing over the drives on the 3494. Our 3494 is
>split into two logical libraries with 16drives. 8 drives available to each
>server.
>The 3590 drives are dual ported allowing us to fail them over from one ADSM
>Server to another. This works fine provided that the there is no I/O
>activity during the failover. If however there is activity then the drive
>does not failover because the SCSI bus does not reset.
>
>How were you able to overcome this?
>
>Nathan
> -----Original Message-----
> From: Roger Hohmann [SMTP:Roger_Hohmann AT WESTLB DOT DE]
> Sent: Friday, October 01, 1999 10:24 AM
> To: ADSM-L AT VM.MARIST DOT EDU
> Subject: Re: Two server with the same database ??
>
> We are using a pair of adsm servers with hacmp. In normal mode,
each
> of them has one adsm running. In case of failure, all filesystems
>are
> mounted to the remaining server and he has 2 dsmserv's running,
each
> with it's own db. (We had to use different tcpports for admin and
> http). It's a little tricky, and you need to double adaptors and
you
> need ssa disks, but it's worth the money.
>
> If we (or the hacmp) recognizes the server crash, we are up with
>both
> servers a on one machine a few minutes later. Our customers won't
> notice it.
>
> Roger
>
> -----Urspr|ngliche Nachricht-----
> Von: Riccardo Capecchi <r.capecchi AT CINECA DOT IT>
> An: ADSM-L AT VM.MARIST DOT EDU <ADSM-L AT VM.MARIST DOT EDU>
> Datum: Freitag, 1. Oktober 1999 15:49
> Betreff: Two server with the same database ??
>
>
> >I wonder is is possible to have 2 server that work with the same
> clients
> >and have the same database (but only 1 copy of backup and
archivied
> >files), mainly the second should be the mirror of the first, so if
> the
> >first crash i've no problem using the second while i rstore the
> first.
> >There is something is ADSM or i should use the operating system ??
> >I use AIX 4.21
> >
> >--
> > Saluti, Riccardo Capecchi
> >
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