Re: SRDF and Oracle Rac 11gR2

From: Andrew Kerber <andrew.kerber_at_gmail.com>
Date: Mon, 27 Jan 2014 15:29:26 -0600
Message-ID: <CAJvnOJajTYF8zpzpDpY=Cx4dZY8MrzaP2xs8D9gm0vx2V9yskQ_at_mail.gmail.com>

We are still in the evaluation phase, so I am trying to get the pros and the cons figured out. It does not sound like an SRDF standby can be opened in read only, though I could be wrong about that.

On Mon, Jan 27, 2014 at 3:18 PM, Matthew Zito <matt_at_crackpotideas.com>wrote:

>
> Well, so, this is the eternal debate, yeah? Data Guard offers infinite
> flexibility, the DBA can control everything, it's storage agnostic, you
> have lots of knobs to twiddle, so on some levels that's perfect.
>
> On the flip side though, SRDF is application/OS agnostic. Anything that
> gets written to any SRDF'ed LUN, regardless of database, filesystem, OS,
> version, etc. ends up on the far side. Like magic.
>
> And SRDF is freakishly stable and mature. It's been baked and stable for
> 15 years.
>
> So SRDF is often best when you might have different database technologies,
> or different OSes, and you care about 100% reliability. It also removes
> responsibility from managing storage replication from the DBA team to some
> degree, since the array is responsible for pushing the bits around.
>
> With regards to the complexity - once you've done a reference
> architecture, gotten it working once, you just repeat it over and over
> again. So that's a little bit of upfront effort, but I don't think in the
> long run it counts for much, especially compared with the care and feeding
> of DG.
>
> So I don't see it as an easy call either way - if you have a lot of strong
> oracle skills in-house and want the flexibility, DG is the way to go. If
> you want to not have to deal with data protection and care about
> bulletproof reliability, or have a heterogenous environment, SRDF is great.
>
> Matt
>
>
> On Mon, Jan 27, 2014 at 4:08 PM, Andrew Kerber <andrew.kerber_at_gmail.com>wrote:
>
>> Yes, that makes sense. I've been looking at the EMC web site, and
>> haven't really found anything definitive one way or another. It really
>> sounds kind of tricky from what you are describing though, not sure I see a
>> real advantage over dataguard at that point.
>>
>>
>>
>>> On Mon, Jan 27, 2014 at 3:44 PM, Andrew Kerber <andrew.kerber_at_gmail.com>wrote:
>>>
>>>> Has anyone used EMC's SRDF with Oracle RAC 11gR2? Any issues? Does it
>>>> work with RAC?
>>>>
>>>>
>>>>

-- 
Andrew W. Kerber

'If at first you dont succeed, dont take up skydiving.'

--
http://www.freelists.org/webpage/oracle-l

Received on Mon Jan 27 2014 - 22:29:26 CET