Re: Latest recommendation for asmlib + number of LUNs
- From: Andrew Kerber <andrew.kerber@xxxxxxxxx>
- To: Chris Stephens <Chris.Stephens@xxxxxxx>
- Date: Wed, 14 Aug 2013 15:20:49 -0500
Well, some disagree but I like ASMLIB and find it easy to use. With
regard to the luns per disk group, that kind of depends on the underlying
storage. Most of the time you have an underlying SAN that is already
taking care of the mirroring and striping so it doesnt make a huge amount
of difference. If they are actual physical disks, you need enough to
distribute the load and allow for redundancy, so I would say at least 3.
I like to see at least 5 dsk groups, data, flash, OCR (high redundancy
group), redo1 and redo 2 (for mirroring the redo logs). But thats just me,
I am not sure what the best practices say these days.
On Wed, Aug 14, 2013 at 2:34 PM, Stephens, Chris <Chris.Stephens@xxxxxxx>wrote:
> I'm venturing into the land of Oracle RAC for the first time and will be
> installing an 11.2.0.3 2-Node cluster from scratch. The storage will be
> allocated from a Dell Compellent (not sure if that's relevant to my
> question or not).
> The official documentation recommends the use of ASMLib but I seem to
> remember a lot of folks on here thinking that was a bad idea or at least
> not a no brainer.
>
> What's the current recommendation / bestest idea on ASMLib use?
>
> Also, any recommendation on the number of LUN's to start off with for each
> disk group? (+data, +fra) Oracle recommends a minimum of 4 but I'm not
> sure how they arrived at that number or whether more would be advantageous.
> That's probably an "it depends" question so what info do I need to make
> that determination?
>
> Thanks,
> Chris
>
>
> CONFIDENTIALITY NOTICE:
> This message is intended for the use of the individual or entity to which
> it is addressed and may contain information that is privileged,
> confidential and exempt from disclosure under applicable law. If the reader
> of this message is not the intended recipient or the employee or agent
> responsible for delivering this message to the intended recipient, you are
> hereby notified that any dissemination, distribution or copying of this
> communication is strictly prohibited. If you have received this
> communication in error, please notify us immediately by email reply.
>
>
>
> --
> //www.freelists.org/webpage/oracle-l
>
>
>
--
Andrew W. Kerber
'If at first you dont succeed, dont take up skydiving.'
--
//www.freelists.org/webpage/oracle-l
Other related posts:
