RanjnaAggarwal
VMware Employee
VMware Employee

Distance between two sites with vmware native replication that is VR as well as with Array based replication

What is the maximum distance between two sites with vmware native replication that is VR as well as with Array based replication?

Regards, Ranjna Aggarwal
0 Kudos
4 Replies
Kedar_D
Enthusiast
Enthusiast

Hi Ranjana,

Distance between two sites depends on business processes or decisions. You need to think about the RPO, RTO and also financials while selecting sites or distance between two sites. Please refer to below link for your reference.

http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=203726...

------------------------------------------------------------ If you find this or any other answer useful please mark the answer as correct or helpful. Kedar http://virtualtechknow.wordpress.com/ ------------------------------------------------------------
0 Kudos
RanjnaAggarwal
VMware Employee
VMware Employee

My question is not for calculating the bandwidth requirements it's about within how much distance we can use VR.

Regards, Ranjna Aggarwal
0 Kudos
a_p_
Leadership
Leadership

Since vSphere Replication uses an asynchronous replication, the distance doesn't really matter. It's actually the RPO/RPO - as mentioned by - which matters. As long as bandwidth and latency are sufficient for reaching these goals, you're fine.

This is actually similar for storage/array replication. With an asynchronous approach you can replicate data over long distances, whereas with synchronous replication you are limited by e.g. round trip times, ...

André

Kedar_D
Enthusiast
Enthusiast

I agree with Andre, Its the matter of replication technique either synchronous or asynchronous. Below link might give you more details that you are looking for.

http://searchitchannel.techtarget.com/feature/Network-bandwidth-Sizing-for-long-distance-storage-net...

------------------------------------------------------------ If you find this or any other answer useful please mark the answer as correct or helpful. Kedar http://virtualtechknow.wordpress.com/ ------------------------------------------------------------