Licensing - Clustering and Mirroring - Site availability and DR

• djrdba

  Grasshopper

  Points: 13

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  June 29, 2016 at 12:58 am

  #400337

  Apologies if this is the wrong forum. I found other licensing questions dotted about various threads. I noted that there was not one dedicated to licensing and I couldn't find one matching my question.

  Ideally I'm looking for somebody who has actually experienced this from Microsoft or has some evidence from an audit to confirm this position.

  There is a 4 node cluster (A-B-C-D) in site 1. All nodes are licensed.

  We using async mirroring to provide DR to a 4 node cluster (E-F-G-H) to site 2.

  In a failover from site 1 to site 2, we shutdown app the apps in site 1 i.e. no business is keyed.

  We change to sync mirroring and flip the mirrors over so site 2 is active and return to async mirroring.

  Is this a valid configuration? There is some confusion now about the "Free single passive" rule.

  I see licensing working as follows.

  Node A covering Node E

  Node B covering Node F

  Node C covering Node G

  Node D covering Node H

  We will never run on both sites simultaneously. However the challenge has been made that an instance on Node A can run on nodes B-H, so we need at least 7 licenses.

  We have SA and I see the move from site 1 to site 2 part of license mobility rights.

  We have been to a few LARS and a couple of other third parties and still not have clarity due to the complexity.

  Any real world experience in this would be much appreciated.

  Many Thanks

• Perry Whittle

  SSC Guru

  Points: 234065

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  June 29, 2016 at 7:47 am

  #1887626

  consult your Microsoft licensing contact for clarification

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  "Ya can't make an omelette without breaking just a few eggs" 😉