T.J. Yang
>From: Detlef Ulherr <Detlef.Ulherr at Sun.COM>
>To: "T.J. Yang" <tj_yang at hotmail.com>
>CC: ha-clusters-discuss at opensolaris.org
>Subject: Re: [ha-clusters-discuss] OHAC, Hobbit server and Hitachi
>Truecopy.
>Date: Tue, 21 Aug 2007 15:16:41 +0200
>
>Hi tj,
>
>you should sync the shared disk and especially not the os disks to the
>DR site.
Understood, not the OS disk but data(hobbit) disk.
>The OS disks contain the repositories which you definitely do not want
>to sync.
>
>If the logical hosts of Cluster A and B reside in different subnets, yu
>must manipulate the name servers. This procedure is definitly slower
>than a failover within the same network.
Great to know there is a slower procedure to failover to different subnet.
Will it longer than 5 minutes ?
tj
>
>Detlef
>
>T.J. Yang wrote:
> >
> >> From: Detlef Ulherr - Sun Availability Engineering Germany -
> >> Frankfurt <Detlef.Ulherr at Sun.COM>
> >> Reply-To: Detlef.Ulherr at Sun.COM
> >> To: "T.J. Yang" <tj_yang at hotmail.com>
> >> CC: ha-clusters-discuss at opensolaris.org
> >> Subject: Re: [ha-clusters-discuss] OHAC, Hobbit server and Hitachi
> >> Truecopy.
> >> Date: Tue, 21 Aug 2007 14:02:44 +0200
> >>
> >> Hi T.J
> >>
> >> AVS is useful for the Solaris Cluster Geographic edition. as a
> >> replacement for remote disk mirroring within a cluster it is
> >> currently not usable.
> >>
> >> Sorry for the bad news
> >
> > This is actually a good news and look promising.
> >
> > I can configure with two SC Geo.E. with hobbit servers in two
> > different subnets(across WAN) and use AVS to sync the internal disks.
> >
> > The only problem left is how can routers+SC Geo E quickly failover
> > the primary hobbit server ip from site A subnet to site B subnet.
> >
> > tj
> >
> >> Detlef
> >> On Sun, Aug 05, 2007 at 08:53:31AM -0700, T.J. Yang wrote:
> >> > Update,
> >> >
> >> > Found AVS, looks like a DRBD, TrueCopy equvilent solutions for
> >> remote disk mirroring.
> >> >
> >> > R4: http://docs.sun.com/source/819-6148-10/chap4.html
> >> > --
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> Detlef Ulherr
> Staff Engineer Tel: (++49 6103) 752-248
> Software Fax: (++49 6103) 752-167
> Sun Microsystems GmbH
> Amperestra?e 6 mailto:detlef.ulherr at sun.com
> 63225 Langen http://www.sun.de/
>*****************************************************************************
>Sitz der Gesellschaft: Sun Microsystems GmbH, Sonnenallee 1, D-85551
>Kirchheim-Heimstetten
>Amtsgericht Muenchen: HRB 161028
>Geschaeftsfuehrer: Thomas Schroeder, Wolfgang Engels, Dr. Roland Boemer
>Vorsitzender des Aufsichtsrates: Martin Haering
>*****************************************************************************
>
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