# Disaster Recovery configuration example for GSLB

**URL:** <https://community.a10networks.com/t/disaster-recovery-configuration-example-for-gslb/72>\
**Category:** ADC - Application Delivery\
**Created:** [December 26, 2011, 12:31am UTC](https://community.a10networks.com/t/disaster-recovery-configuration-example-for-gslb/72 "2011-12-26T00:31:11Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![dbanares](https://avatars.discourse-cdn.com/v4/letter/d/ecccb3/32.png) [@dbanares](https://community.a10networks.com/u/dbanares)\
**Post date:** [December 26, 2011, 12:31am UTC](https://community.a10networks.com/t/disaster-recovery-configuration-example-for-gslb/72/1 "2011-12-26T00:31:11Z")

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**Posted by dbanares**

Hi,

I would like to ask an example configuration for disaster recovery deployment. What are the options to select in the GSLB algorithm for this kind of deployment. I can’t find this topic in the manual.

Thanks,

Dannel

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**Author:** ![system](https://us1.discourse-cdn.com/flex002/uploads/a10_community/original/1X/bb9f186d33804d3044a0374e589f49fdf3be1328.png) [@system](https://community.a10networks.com/u/system)\
**Post date:** [December 27, 2011, 12:33am UTC](https://community.a10networks.com/t/disaster-recovery-configuration-example-for-gslb/72/2 "2011-12-27T00:33:13Z")

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**Posted by ddesmidt**

Hi Dannel,

For disaster recovery, you want everybody sent to “the primary datacenter” when this one is UP. The “backup datacenter” will be used only if the: . datacenter is down (lost Internet access for instance) . or all the servers/applications are down in the datacenter (so VIP is down in the datacenter)

For that the easiest option is to use: . “admin-preference” under the GSLB site (with a higher preference for the primary site) . “admin preference” under the GSLB policy (=\> the site VIP with higher preference is always replied - as long as UP of course)

Here is attached a CLI configuration example.

Thanks, Dimitri

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<div class="post-metadata">

**Author:** ![dbanares](https://avatars.discourse-cdn.com/v4/letter/d/ecccb3/32.png) [@dbanares](https://community.a10networks.com/u/dbanares)\
**Post date:** [December 27, 2011, 12:34am UTC](https://community.a10networks.com/t/disaster-recovery-configuration-example-for-gslb/72/3 "2011-12-27T00:34:36Z")

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**Posted by dbanares**

Thanks Dimitri, these really helps me a lot.

Dannel

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**Author:** ![pvtan\_cmc.com.vn](https://avatars.discourse-cdn.com/v4/letter/p/e495f1/32.png) [@pvtan\_cmc.com.vn](https://community.a10networks.com/u/pvtan_cmc.com.vn)\
**Post date:** [August 29, 2018, 2:23am UTC](https://community.a10networks.com/t/disaster-recovery-configuration-example-for-gslb/72/4 "2018-08-29T02:23:25Z")

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Hello ddesmidt,  
Maybe this topic is to old so I cannot see the attachment. Can you upload a similar configuration for this deployment.

And how to deploy GSLB for Active/Active application in both site ?

Thank you.