On 6/1/20 6:46 AM, Nghia Viet Tran wrote:
> Hi everyone,
> 
>  
> 
> Currently, our client application and Ceph cluster are running on the
> primary datacenter. We’re planning to deploy Ceph on the secondary
> datacenter for DR. The secondary datacenter is in the standby mode. If
> something went wrong with the primary datacenter, the secondary
> datacenter will take over.
> 
> The possible way would work in this case is that adding hosts from the
> secondary datacenter into the existed Ceph cluster in the primary
> datacenter. By this way, it would add more latency for client requests
> since client  from primary datacenter might connects to OSD hosts in the
> secondary datacenter)
> 
>  
> 
> Are there any special configurations in Ceph that fulfill this requirement?

What is the application? CephFS? RBD? RGW?

The second datacenter indeed adds latency, so I would be very, very
careful with that.

Wido

> 
>  
> 
> I truly appreciate any comments!
> 
> Nghia.
> 
> 
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