It depends. HADR will do the job, sync mode depends on business requirements, latency etc. also gives you ability to have multiple standbys in different locations. Either solution will need to be fully documented and tested. Of course the application will require testing also, with automatic client reroute etc, With disk snapshot the DB will need to have writes suspended while snapped....not sure what kind of mirroring will be used but that has to be a consideration.
On Tue, Jul 18, 2017 at 3:34 PM Tom Glaser <[login to unmask email]> wrote:
I'm looking to get your opinion on a disaster recovery option for DB2 running on AIX.
I have a production data center and a disaster recovery site 12 miles away. The SLA to get the DR site up and running is 4 hours. We have been told we can do disk mirroring….the entire AIX server will be copied to the DR site via hardware replication. I also have the ability to use HADR. Primary in the production site. Secondary server will be in the DR site. Which is best, hardware disk mirroring, or HADR? The application we will be supporting will be using hardware replication. What would you recommend and why?
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