Re: ASM disk to physical disk mapping

From: John Hurley <>
Date: Wed, 1 Jul 2009 09:08:05 -0700 (PDT)
Message-ID: <>

On Jul 1, 11:55 am, Dan <> wrote:
> Does anyone know how to map an ASM disk that I can see in OEM to its
> physical drive?  I have a disk that is throwing errors via my hardware
> diagnostic (but no errors yet in Oracle).  I would like to identify it
> in ASM, remove it and rebalance off of it.  I know and can see the
> exact physical disk that is bad, yet I cannot definitively identify
> what ASM disk maps to that physical disk.
> Is there a tool to do this?
> For example, my bad disk is disk 1:11 - on Channel 1, Target ID 11,
> Lun 0.  I have 3 disk arrays of 14 disks each, channel 0 and 1 on one
> controller, channel 0 on another controller.  But in my Windows
> environment when I use Disk Management, I see two disks with Target ID
> 11, Lun 0.  I'm not sure which is the culprit.
> Thanks.
> Dan

Do you have your create diskgroup statements around? You can look at those ... or do some querying against the ASM views. Received on Wed Jul 01 2009 - 11:08:05 CDT

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