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Any ideas about CG when support near sync replication?

  • Sep 18, 2023 3:15 PM UTC
  • 6 replies
  • 127 views
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Dears:

I checked the “Nutanix Disaster Recovery Guide” and found from AOS 6.6, CG replication was supported on async replication, but not on nearsync or sync replication. 

Any ideas about CG when support near sync replication?

The reason why I will have this question is we want to use CG nearsync replication to protect SQL server cluster. (Our RPO is about 10-15 mins), so I am worried about during planned failover or unplanned failover, the SQL server cluster could not start normally.

 

Thank you very much!

 

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6 replies

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  • gael01
  • Trendsetter
  • Sep 19, 2023 8:10 AM UTC

Hello !

What do you mean by “CG”  ?

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  • LinKan
  • Author
  • Trendsetter
  • Sep 19, 2023 8:17 AM UTC

Hello !

What do you mean by “CG”  ?

CG means consistent group.

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  • gael01
  • Trendsetter
  • Sep 19, 2023 8:25 AM UTC

Alright, so to answer to your original post, as nearsync is built on async mecanism, i’d say CG are fully supported. https://www.nutanix.com/blog/nutanix-dr-multi-site-recovery

 

About configuration of CG in a nearsync environment : https://portal.nutanix.com/page/documents/details/?targetId=Prism-Element-Data-Protection-Guide-v5_16:wc-dr-near-sync-c.html

on step 3 within Configuring NearSync Disaster Recovery

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  • LinKan
  • Author
  • Trendsetter
  • Sep 19, 2023 8:30 AM UTC

Alright, so to answer to your original post, as nearsync is built on async mecanism, i’d say CG are fully supported. https://www.nutanix.com/blog/nutanix-dr-multi-site-recovery

 

About configuration of CG in a nearsync environment : https://portal.nutanix.com/page/documents/details/?targetId=Prism-Element-Data-Protection-Guide-v5_16:wc-dr-near-sync-c.html

on step 3 within Configuring NearSync Disaster Recovery

I know PD with PE could support CG in a nearsync environment. But how about Leap with PC? I checked the guide, it only support Async replications for CG.

 

 

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  • gael01
  • Trendsetter
  • Sep 19, 2023 9:36 AM UTC

As I wrote, Async/NearSync works on the same mecanism (as you can simply change from one to another in your configuraiton) so i’d say yes.

Moreover, when I see tables like this I assume it’s ok

 

I’ll tell you to ask Nutanix support to be 100% sure

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  • LinKan
  • Author
  • Trendsetter
  • Sep 19, 2023 9:41 AM UTC

Let me clarify more clearly:

You can see below that CG in Nutanix Disaster Recovery supports only Async replication schedule. No Nearsync. 

 

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