Re: Veritas Volume Replicator instead of DataGuard

Thank you for bringing this up. You're probably right. Of course license issues can only be finalized in negotiations with Oracle representatives.
Actually, if license at the remote site is required, the Data Guard solutions gets even stronger.

Best, Carel-Jan

On Thu, 2007-09-13 at 09:46 +0200, Ghassan Salem wrote:

> Carel-Jan,
> Are you sure about the license bit, I think you have to pay for the
> license at the remote site, the one you're talking about is when you
> have an active-passive cluster (with a single db, that is), not a
> remote site.
>
>
> On 9/12/07, Carel-Jan Engel <careljan_at_dbalert.eu> wrote:
>
> Hi Binh,
>
> In my opinion, there are numerous arguments to favour Data
> Guard over disk/san/volume replication. Just to mention a
> few:
> 1. Much less bandwidth reuired: just redo vectors get
> sent over, not a full block/cluster/track for every
> redo wrtite, data file write, archive write, control
> file write.......
> 2. Configuring a delay in applying archives at the DR
> site protects for 'logical' errors as well. That has
> saved some asses of customers in the past
> 3. Applying the archives at the standby implies a sanity
> check of the archives themselves: a bit fallen over
> (whatever rare it is) in a disk block gets detected.
> 4. Independency of storage architecture: you can afford
> to have a smaller/slower/older SAN at the DR site, as
> long as you can store all database files. You can even
> afford to have no SAN but JBOD/NAS/DAS at the DR site,
> or just no SAN at all at both ends.
> Of course there are some arguments in favour of
> disk/san/volume replication as well:
> 1. No Oracle license required at the DR site if you do
> not do the sanity checks more often than at 10 days
> per year.
> 2. One 'topic of expertise' needed for DR
> I can't think of more right now, but maybe my mind is a little
> biased ;-)
>
> HTH
>
> Best regards,
>
> Carel-Jan Engel
>
> ===
> If you think education is expensive, try ignorance. (Derek
> Bok)
> ===
>
>
> On Wed, 2007-09-12 at 14:52 -0700, Binh Pham wrote:
>
> > Any one who has used Veritas Volume Replicator in place of DataGuard for
> > disaster recovery or failover setups?
> >
> > Any issues or problems? Pro's and con's?
> >
> > Thanks.
> >
> > --
> > http://www.freelists.org/webpage/oracle-l
> >
> >
>
>
>
>
>
>
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===
If you think education is expensive, try ignorance. (Derek Bok) ===

DBA!ert, Independent Oracle consultancy Kastanjelaan 61C
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tel. +31 (0) 182 64 04 28
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