Re: ASM Host Mirroring
From: LS Cheng <exriscer_at_gmail.com>
Date: Tue, 19 Feb 2008 23:03:12 +0100
Message-ID: <6e9345580802191403x4a7af3c1vef58a1d0ee2a8905@mail.gmail.com>
Date: Tue, 19 Feb 2008 23:03:12 +0100
Message-ID: <6e9345580802191403x4a7af3c1vef58a1d0ee2a8905@mail.gmail.com>
Hi Mark
In a stretch cluster configuration you can replace host based mirroring software such as Veritas Cluster Volume Manager with ASM, i.e ASM can serve as host based mirroring software! But I cant find detailed stuff to explain how it works
Hardware mirroring would be array based.
Thanks
-- LSC On 2/19/08, Powell, Mark D <mark.powell_at_eds.com> wrote:Received on Tue Feb 19 2008 - 16:03:12 CST
>
> I believe that when "host" based mirroring is in use in relation to ASM
> that it means the host OS or hardware is performing the mirror function
> outside of ASM so ASM is not mirroring the disk in this case.
>
>
> -- Mark D Powell --
> Phone (313) 592-5148
>
>
> ------------------------------
> *From:* oracle-l-bounce_at_freelists.org [mailto:
> oracle-l-bounce_at_freelists.org] *On Behalf Of *LS Cheng
> *Sent:* Tuesday, February 19, 2008 2:33 PM
> *To:* oracle-l
> *Subject:* ASM Host Mirroring
>
>
> Hi
>
> Does anyone know how ASM does host based mirroring. For example we have
> two storage arrays with 10 metres distance, two failure groups are created,
> one per array. How does ASM mirror the extents? Network? Using the Cluster
> Interconnect? Or a seperate Network?
>
> Cheers
>
> --
> LSC
>
>
>
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