This Question is Possibly Answered

1 "correct" answer available (10 pts) 2 "helpful" answers available (5 pts)
941 Views 1 Replies Last post: Jul 2, 2009 8:41 AM by radek.kubka RSS
sschmitt NetApp Employee Novice 4 posts since
May 29, 2008
Currently Being Moderated

Jul 2, 2009 7:47 AM

Why should we disable dedupe when using Protection Manager?

Hi,

 

I have a question regarding the documents on NOW:

http://now.netapp.com/NOW/knowledge/docs/ontap/rel7311/html/ontap/rnote/rel_notes/concept/c_oc_rn_lim-dp-sv-protmgr-dedupe.html

 

..

Do not use Protection Manager 3.7 on volumes that have deduplication enabled.

..

 

Okay, I know OM 3.7 is not aware of Dedupe. But it is still possible to do backups with dedupe enabled on the primary side.

My Customer found this and is asking if this also applies for the PM in 3.8 Version.

 

Additional question is...

Do we need Provisioning Manager license for future Protection Manager installs, if we want to use dedupe on primary and secondary snapvault relationship? (got something in my mind from talking with PMs)

radek.kubka Virtuoso 368 posts since
Jul 31, 2008
Currently Being Moderated
Jul 2, 2009 8:41 AM in response to: sschmitt
Re: Why should we disable dedupe when using Protection Manager?

I think the only rationale behind that recommendation (I'd treat that as a recommendation) is explained on that page:

if snapshots exist, de-dupe will 'release' duplicate blocks & the youngest (if my memory servers OK) snapshot will be grown by exactly the same size as de-dupe 'saving'.

 

But this issue is not specific by any means to just Protection Manager.

 

Regards,

Radek

More Like This

  • Retrieving data ...

Bookmarked By (0)