RE: Cluster File System Versus ASM for RAC Deployment in Production?... Pros & Cons
- From: "Best, David" <David.Best@xxxxxxxxxx>
- To: <katpopins21@xxxxxxxxx>, <oracle-l@xxxxxxxxxxxxx>
- Date: Thu, 6 Dec 2007 13:22:00 -0500
I took the RAC course a couple of months ago as well. The instructor,
in between courses, would perform RAC installations as well. He said
that with ASM an implementatino would take half as long. ie, before ASM
it would take on average 2 weeks and after 1 week.
I'm not a big fan of ASM for a number of reasons, but it was nice to
hear some real world experiences with it.
________________________________
From: oracle-l-bounce@xxxxxxxxxxxxx
[mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of kathy duret
Sent: Thursday, December 06, 2007 10:44 AM
To: oracle-l@xxxxxxxxxxxxx
Subject: Re: Cluster File System Versus ASM for RAC Deployment in
Production?... Pros & Cons
I just came from a RAC class and basically the instructor said the same
thing.
Oracle's direction is ASM, their training is focused on using ASM, their
papers are all focused on using ASM. He showed us how to install and
configure ASM. He also mentioned Oracle will be coming out next year
with another class for just ASM.
He also said ASM is alot better in 11i.
Yes, Oracle will support the clustered file system but you will get a
push back from them to check with the other vendor first to resolve the
issue.
I just went through this with my Veritas Rman issues. Three years ago,
Oracle worked through the issues with me. This last tar they helped me
with the basics and then said I would have to contract Veritas to
resolve the issue. The will probably be the same for using clustered
file system in one-two years from now. Oracle will help you on some of
the basic troubleshooting and then you will have to depend on the vendor
for help. And as we all know some vendors are better than others for
this.
My 2.5 cents worth
K
Dan Norris <dannorris@xxxxxxxxxxxxx> wrote:
Personally, I'd choose ASM and recommend it to all my customers.
This is partly because: 1) Oracle recommends it, 2) if Oracle recommends
something, they generally support it better than things they don't
recommend, 3) it doesn't cost extra money, and 4) I think ASM is a fine
product that does its job well (admittedly better in 11g than 10g, but
that's not your question).
I think that using a CFS requires training for system admins
while ASM would also require training, but possibly for the DBAs instead
of the sysadmins. Typically, I still see ASM being managed by DBAs even
though it really isn't a database. Many companies have the DBAs manage
anything with the word Oracle stamped on it.
For docs or links, see otn.oracle.com/asm.
Dan
----- Original Message ----
From: VIVEK_SHARMA <VIVEK_SHARMA@xxxxxxxxxxx>
To: "oracle-l@xxxxxxxxxxxxx" <oracle-l@xxxxxxxxxxxxx>
Sent: Wednesday, December 5, 2007 9:08:21 PM
Subject: RE: Cluster File System Versus ASM for RAC Deployment
in Production?... Pros & Cons
Folks
Additionally does ASM administration need additional Skill Set /
Training versus administration on Cluster File System(CFS), for RAC?
If so, in what context?
Docs / Links please?
Cheers
________________________________
From: oracle-l-bounce@xxxxxxxxxxxxx
Folks
For subsequent RAC Deployment in ver 10gR2, A Banking customer
needs to take a decision on use of Cluster file system versus ASM?
Prima-facie, How do the 2 compare in terms of Performance,
scalability, availability, migration, ease of use, backups, need for
training etc.
Any Docs, Links will help.
Currently Production Deployment info:-
* NON-RAC with Oracle ver 9.2,
* Solaris 10.
* Database size if 5 TB approx.
* Daily peak load of 20,000 Concurrent sessions connecting
to the Database via Shared Servers (MTS).
* Database exists on the default Unix File system (UFS),
* Machine - SF25K SUN Server.
* Storage Box - Sun Store Edge 9980 V
* Sun Cluster filesystem is QFS
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