Re: asm on san

On Dec 11, 12:32 pm, DA Morgan <damor..._at_psoug.org> wrote:

snip

> > I'm preparing to test some configurations on san storage array. I would
> > like to find out what will be better in my environment: raid1+0 or
> > raid5. Other thing is what size of segment size should be configured on
> > storage array. For example, I've got 5 disks in RAID5, so if ASM default
> > stripe size for datafiles is 1MB, so segment size on strage shouls be
> > 256KB to hit all drives, am I right?
> > What tools are You recommend to do tests like this: sequentail/sequence
> > reads etc?  thanks
>
> > oracle 10gr2, rhel5
>
> You will find the answer here:http://www.baarf.com/
>
> The answer is not RAID5.

Wonder who posted this gem ... ( copy and paste follows ) ...

When Linux was a better decision for Oracle than Solaris I advocated Linux. It isn't any more. It has grown too expensive and doesn't come close to the available performance so it delivers less value.

In this business you have got to be prepared for the fact that warm-and-fuzzy only lasts 3-5 years. And if someone doesn't keep up they
fall by the wayside. I've left behind Fortran, COBOL, DB2, and numerous
other technologies because they weren't where it was happening. Why should I feel differently about hardware?

I would suggest that you read the following: http://www.oracle.com/technology/deploy/availability/htdocs/lowcostst...

This is Oracle's direction. It is not compromising one's independence to
act on it. It is this direction that has taken me, over the years, from
EMC to NetApp and now to Apple and who knows where it will take me in the future

...

Along with claims and hyperbole ... dual XOR engines ... yada yada ... Received on Sat Dec 13 2008 - 16:28:55 CST