RE: Replicating Live Oracle DataFiles/LUNs to remote site via SAN tool?

From: Hameed, Amir <Amir.Hameed_at_xerox.com>
Date: Thu, 27 Aug 2009 10:35:33 -0400
Message-ID: <304F58144267C5439E733532ABC9A3A10AEEC209_at_USA0300MS02.na.xerox.net>

SRDF is a nice technology but comes with a premium. To replicate 1TB of storage, a total of 4TB is required (source + R1 + R2 + target); something to be kept in mind. It also requires a higher bandwidth when compared to other replication technologies like Symantec's VVR and EMC's Recover Point.

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        From: oracle-l-bounce_at_freelists.org
[mailto:oracle-l-bounce_at_freelists.org] On Behalf Of Matthew Zito

	Sent: Thursday, August 27, 2009 9:59 AM
	To: Jeremy.Sheehan_at_fpl.com; ChrisDavid.Taylor_at_ingrambarge.com;
Oracle L
	Subject: RE: Replicating Live Oracle DataFiles/LUNs to remote

site via SAN tool?                  

        I agree that there are a lot of concerns around synchronous replication of datafiles, but certainly, this is pretty much the gold standard in large database shops. Probably every one of my large customers uses something like SRDF for their DR.         

        I think that Data Guard offers many advantages over storage level replication, but it is indeed reliable, time tested, and works across any application technology, making it easy to sign off on as a DR solution.         

        Matt                  

	-----Original Message-----
	From: oracle-l-bounce_at_freelists.org on behalf of SHEEHAN, JEREMY
	Sent: Thu 8/27/2009 9:51 AM
	To: ChrisDavid.Taylor_at_ingrambarge.com; 'Oracle L'
	Subject: RE: Replicating Live Oracle DataFiles/LUNs to remote

site via SAN tool?         

        We use EMC's SRDF method for replication/backups/refreshes. I'm fairly new to it, but as far as I can see, it's reliable and unbelievably fast. I've seen a full refresh of a 1.7 TB database finish in less than 2 hours. The refresh was taken from a running instance.         

        Cons - It's expensive....         

        Jeremy         

        P Consider the environment. Please don't print this e-mail unless you really need to.         

        From: oracle-l-bounce_at_freelists.org
[mailto:oracle-l-bounce_at_freelists.org] On Behalf Of Taylor, Chris David

	Sent: Thursday, August 27, 2009 9:43 AM
	To: 'Oracle L'
	Subject: Replicating Live Oracle DataFiles/LUNs to remote site

via SAN tool?         

        Any of you guys/gals replicating LIVE datafiles from one SAN to another in a remote location?         

        We're looking at using HP's CA tool to replicate LIVE datafiles across a WAN to another SAN. The replication is block based, so any block that changes on the primary LUN is immediately replicated to the remote LUN at the remote site.         

        Is anyone doing anything similar to this? Pros? Cons? I have a hard time imagining that this is a good idea but perhaps it is doable.         

        Thoughts?         

	Chris Taylor
	Sr. Oracle DBA
	Ingram Barge Company
	Nashville, TN 37205
	Office: 615-517-3355
	Cell: 615-354-4799
	Email:

chris.taylor_at_ingrambarge.com<mailto:chris.taylor_at_ingrambarge.com>         

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Received on Thu Aug 27 2009 - 09:35:33 CDT