Re: ASM+internal disks

  • From: Niall Litchfield <niall.litchfield@xxxxxxxxx>
  • To: oracle.tutorials@xxxxxxxxx
  • Date: Tue, 26 Apr 2011 08:10:01 +0100

Deepak, I'm with you on the mirrored pair for the o/s - availability trumps
the performance that Kevin refers to. But software RAID? Seriously? Does the
server not have a decent controller? You can of course keep any oracle files
outside of ASM.

On 25 Apr 2011 19:28, "DBA Deepak" <oracle.tutorials@xxxxxxxxx> wrote:


We have a server with 8 SAS internal disks. The OS is going to be RHEL 5

We plan to mirror disk 1 and 2 using software RAID -- OS and Oracle software
will be kept on this

Remaining 6 disks will be used for ASM.

Need your expert opinion on how to use the disks efficiently to maximize the
available space without loosing ASM performance benefits much.

Our main worry is that if we spare 2 disks for storing online REDO logs
(different ASM diskgroup with fine striping) then it will be a loss of space
as well as we will have only 4 disks to store remaining oracle database
files hence loosing performance a bit.

Please suggest how should we layout the various files under ASM.


Oracle DBA

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