piedthepiper
Contributor
Contributor

Running SRM in a active/active setup

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Hi Guys,

I am curious about using SRM to protect VMs in 2 data centres that are both active.

Data centre A has a bunch of VMs that need to be replicated over to Data Centre B using array replication

But Data Centre B has  bunch of different VMs that need to replicated over to Data Centre A.

Both data centres have enough spare capacity to cope with a total failure at one site. I was wondering how would this work with SRM as normally you have just one source site and one target site?

Can you essentially have one recovery plan configured at Site A going to Site B and another recovery plan from configure at Site B going to Site A with async replication.

What are the licensing implications and is there any documentation or links to such a setup?


Cheers

Bilal

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basher
VMware Employee
VMware Employee

Hi,

Active-active scenarios are perfectly supported since SRM 5.0 (you need SRM 5.1 if you are using vSphere Replication). You can have PG A protecting VMs on Site A and PG B protecting VMs on Site B. Then you create two corresponding recovery plans.

From licensing perspective there are some tricks - because of active active, you now need licenses for all VMs at every site - i.e. you need to have a license allocated on Site B for all VMs that might be brought from Site A (and vice versa). This can be avoided by using Linked Mode between Site A and Site B vCenter servers.

Long story short - SRM supports your scenario. There isn't specific documentation for this use case as it is the primary one for SRM these days Smiley Happy. You can look at this page on SRM docs: Site Recovery Manager 6.0 Documentation Center

Thanks

Stefan

Director - VMware Site Recovery Manager

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basher
VMware Employee
VMware Employee

Hi,

Active-active scenarios are perfectly supported since SRM 5.0 (you need SRM 5.1 if you are using vSphere Replication). You can have PG A protecting VMs on Site A and PG B protecting VMs on Site B. Then you create two corresponding recovery plans.

From licensing perspective there are some tricks - because of active active, you now need licenses for all VMs at every site - i.e. you need to have a license allocated on Site B for all VMs that might be brought from Site A (and vice versa). This can be avoided by using Linked Mode between Site A and Site B vCenter servers.

Long story short - SRM supports your scenario. There isn't specific documentation for this use case as it is the primary one for SRM these days Smiley Happy. You can look at this page on SRM docs: Site Recovery Manager 6.0 Documentation Center

Thanks

Stefan

Director - VMware Site Recovery Manager
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vbrowncoat
VMware Employee
VMware Employee

(I didn't type as fast as Stefan - +1 to his comments) Bi-directional protection is fully supported by SRM. Whether you are using array-based replication or VR it would work the same bi-directional as with protected-recovery site config, you would configure replication to protect the VMs from each site to the other. You would setup protection groups and recovery plans accordingly (so from A to B and from B to A). For licensing, SRM is licensed per protected VM so if you were protecting 50 VMs at site A and 50 at site B you'd need 100 licenses.

There isn't any specific documentation as there really isn't anything specific to this process that is different from normal SRM configuration.