Site Read Locality and Site Disaster Tolerance query

[Techstarts]

Hallo All,

Looks like I'm missing something.

Hope it should be okay to ask here.

I'm reading vSAN 6.7 Deep Dive.

In stretch cluster we use "Read Locality" to keep restrict reading within the Site-A but does it mean the in case Primary site fails, then no replica will be available there to recover.

So in other words, If I put Site Disaster Tolerance = Dual Site Mirroring and also select "Read Locality" how will it function? Or I'm missing something.

Thanks,

Preetam

[TheBobkin · Accepted solution]

Hello Preetam,

With the policy you noted above, Writes still go to data-replicas in both sites and thus there is site-redundancy - it's just the Read IOs that will only be served from the data in the site that VM is running on.

Bob

[Techstarts]

Thanks Bob for confirming. Super!!!