Migration of AlwaysON database from WSFC 2008 + SQL2012 to WSFC 2012 + SQL2014


hello all,

i have 6 node geo cluster, 4 nodes in primary site + 2 nodes in secondary site. in primary node 03 , 04 has 2 pair of sql instances default + named.

i planning to  move named sql pair wsfc 2008 + sql2012 wsfc 2012 + sql2014. has 1 ag group 4 tb of dbs.

do guys have experience , options migration. planning go with  backup/restore. let me share yours inputs.

1. backup/restore 2. cross cluster migration 3.detach/attach 4. san migration

thanks!


muthukkumaran kaliyamoorthy

helping sql dbas , developers >>> sqlserverblogforum

since wsfc not support rolling upgrades, need have wsfc running windows server 2012/r2 (r2 highly recommended due features available maintaining high availability) , cross-cluster migration. refer documentation more details.

https://msdn.microsoft.com/en-us/library/jj873730.aspx

this requires you're comfortable powershell.

the main challenge here dealing hardware resources since need additional servers when moving new wsfc. have run multiple instances on same cluster node while remove node , repurpose wsfc 2012/r2. proper planning important make sure maximizing resources while minimizing downtime. cannot speak capabilities of san each vendor have different features approach has been dependent on slas , recovery objectives. backup/restore still needed synchronize data old wsfc target wsfc.

edwin sarmiento sql server mvp | microsoft certified master
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sql server high availability , disaster recover deep dive course





SQL Server  >  SQL Server High Availability and Disaster Recovery



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