Re: Move from Veritas to ASM
- From: "Alex Gorbachev" <gorbyx@xxxxxxxxx>
- To: oracle-l <oracle-l@xxxxxxxxxxxxx>
- Date: Fri, 16 Mar 2007 17:17:36 -0500
VxFS is most probably an overkill to use with ASM. Max you need is
Veritas VM or CVM of RAC. Even that is an overkill. The only useful
piece of Veritas stack is DMP multipathing but I'm not sure if you can
use it properly (and license separately) without Veritas volume
manager on top.
What is overkill in combination of ASM and Veritas is an open question. ;-)
On 3/16/07, Kevin Closson <kevinc@xxxxxxxxxxxxx> wrote:
ASM just needs disks (or some storage exposed to ASM as Disks)
and if you can expose (!) VxFS volumes as ASM disks, ASM will happily
manage the disks.
...ok that trick requires the setting of an undocumented parameter
(_asm_allow_only_raw_disks=FALSE) which would compound how bad an idea
it would be to layer as "file system/volume manager" on top of Veritas
VxFS.
As an aside, you can use files in NAS as "disks" for disk groups in ASM.
I think that is rediculous and that opinion is echoed (to a degree) in
NetApp and EMC papers I refer to in my blog.
Lots of related stuff here:
http://kevinclosson.wordpress.com/kevin-closson-index/cfs-nfs-asm-topics
/
--
//www.freelists.org/webpage/oracle-l
--
Best regards,
Alex Gorbachev
http://www.oracloid.com
--
//www.freelists.org/webpage/oracle-l
Other related posts:
