Re: Data Mirroring on two data centers -- How to use ASM ?

Hi

I am talking with Logic so I might be wrong

1. ASM is itself sort of a Volume Manager, it manages the RAW disks so I doubt it very much you can use a Volume Manager to manage ASM disks.
2. ASM Stripes your SAN logical volumes, i dont think it would affect your I/O performance

On 5/18/06, Madhu V <db.mail.1_at_gmail.com> wrote:
>
> Hello All,
>
> We are planning on testing a two node 10g RAC using ASM for one of our
> database on pSeries using AIX 5.3. We have a primary requirement of
> mirroring data across TWO data centers (Hitachi SAN). I have two questions
>
> 1. Mirroring.
>
> Can we use AIX Volume Manager to take care of the mirroring or ASM to
> do mirroring. I am specifically looking for HOW and WHY?
>
> 2. Striping
>
> I have seen a similar post just a few days ago on ASM striping,
> although i couldn't understand much of it (Pardon my knowledge on disk
> technologies). Our storage folks told me that, they have a huge disk cache
> (128 GB) and very high performing SAN (HDS 9980) w/ excellent algorithm for
> striping the LUNS across multiple disks. So HOW best I can use ASM striping
> along w/ HDS storage striping? or will it cause any performance problems??
>
> Please advise me...
>
> Good Day,
> Madhu
>
>

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