Steve Howard wrote:
> On Sep 24, 11:45 am, DA Morgan <damor..._at_psoug.org> wrote:
>> hjr.pyth..._at_gmail.com wrote:
>>> On Sep 24, 8:47 am, DA Morgan <damor..._at_psoug.org> wrote:
>>>> Bob Jones wrote:
>>>>> ASM will not make migration to another platform easier or harder. The main
>>>>> advantage really is easier administration for DBAs when it's all setup, but
>>>>> not without drawbacks.
>>>> Wrong on both accounts. You just never stop with the wholesale ignorance
>>>> do you.
>>>> ASM makes migration easier. As to drawbacks one can only assume that if
>>>> you actually knew of one you'd have named it so another classic BJ moment.
>>>> Yep, just another example of turning off the lights and throwing mud at
>>>> Oracle: Impressive. So far you've only managed to get yourself dirty.
>>>> --
>>>> Daniel A. Morgan
>>>> University of Washington
>>>> damor..._at_x.washington.edu (replace x with u to respond)
>>>> Puget Sound Oracle Users Groupwww.psoug.org
>>> Well, just to abort the mud-pie contest before it really starts, how
>>> about explaining **how** ASM makes migration easier? That is, how it
>>> makes turning a Windows database into a Solaris one (say) any easier
>>> than it would be in a non-ASM environment...;
>> Your use of Windows and Solaris confuses the issue. You are asking
>> about operating systems and ASM is about storage. And not the
>> storage of your Oracle binaries.
>>
>> Let me ask your question in a manner consistent with what ASM
>> is and does.
>>
>> "... how it makes turning a database stored on an EMC filer into
>> one stored on a Hitachi filer"
>>
>> If you can mount a disk system you can create an ASM diskgroup. If
>> you can create an ASM disk group you can migrate from it or to it.
>> --
>> Daniel A. Morgan
>> University of Washington
>> damor..._at_x.washington.edu (replace x with u to respond)
>> Puget Sound Oracle Users Groupwww.psoug.org
>
> I agree with this. To provide an actual real-life specific example,
> we switched from IBM FAStT storage to EMC by adding the EMC disks to
> the existing diskgroup (originally with only FAStT storage). Once the
> rebalance to include the EMC disks had completed, we dropped the FAStT
> disks from the diskgroup. Clean and easy.
>
> Regards,
>
> Steve
Did a NetApp to Hitachi here in Seattle last month. It worked
perfectly with zero end-user downtime.
--
Daniel A. Morgan
University of Washington
damorgan_at_x.washington.edu (replace x with u to respond)
Puget Sound Oracle Users Group
www.psoug.org
Received on Mon Sep 24 2007 - 13:06:54 CDT
