DR Testing, Mirrorview and Snaps...

Question

Hi Folks, IHAC who has a CX3-40f running in PROD replicating via mirrorview sync to a CX3-40f in DR. They are both running Flare release 26. They are wanting to do a DR test, however do not want to split the link or promote the secondary images - instead want to use a 3rd dataset at the DR site to mount to their DR test servers. I have been told this is possible to do by using a snapview clone hanging off the secondry image at DR, then fracturing it while data is still being replicated and the database is still live. The customer is aware that this would create an inconsistent data set, however have argued that this would be the case anyway with a site failure so would be good recovery practice My question is: Is this possible to do, and if so can someone outline the steps for it or point me in the direction of a document which goes through this process if one exists? I also read that you cannot present the source and clone in the same storage group to a host - is there a way round this if the secondary image is already presented to a host (but obvioulsy not mounted) in this case? Thanks, Sean.

kelleg · Answer

Have you tried the Mirrorview Knowledgebook? There's a section on DR setup and testing.

Mirrorview

White Paper: MirrorView Knowledgebook: FLARE 28 - A Detailed Review

http://powerlink.emc.com/km/live1/en_US/Offering_Technical/White_Paper/H2417_clariion_mirrorview_asynch_dr_wp_ldv.pdf

glen

mpalumbo1 · Answer

**I also read that you cannot present the source and clone in the same storage group to a host - is there a way round this if the secondary image is already presented to a host (but obvioulsy not mounted) in this case?

Unless you remove the source clone that you cloned from, no. From an OS perspective when you present the Clone drive to the host it cant tell them apart because they are exactly the same and it causes all kinds of problems, at least in Windows, I have tried

.

Mike

seanmulgrew · Answer

Thanks for the info guys - much appreciated!

kelleg · Answer

Have your questions been answered - if so, could you mark the question as answered - that way if there is a similar question in the future we can reference this topic.thanks,glen

CLARiiON

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