Re: CCR in geographically disperse data centers

Exchange 2007 SP2 will add the SCR feature

Ed meant Exchange 2007 SP1.

The FSW can be on a third network segment/subnet, including in a third data center location if you want automatic failovers in case of a site failure.
CCR Over WAN: Failover and FSW questions answered
http://exchangepedia.com/blog/2007/04/ccr-over-wan-failover-and-fsw-questions.html
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Bharat Suneja
MVP - Exchange
www.zenprise.com
NEW blog location:
exchangepedia.com/blog
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"Ed Crowley [MVP]" <curspice@xxxxxxxxxxxxxx> wrote in message news:OZAhMTupHHA.588@xxxxxxxxxxxxxxxxxxxxxxx
How to stretch the LANs across geographies is a topic that's well outside an Exchange discussion. You'll need to work it out with your network guy. Exchange 2007 SP2 will add the SCR feature, which will allow you cross-subnet data replication without clustering, something many believe will actually be preferable to clustering. It is reported that Windows Server 2008 will support cross-subnet clusters, so that may be your answer.
--
Ed Crowley
MVP - Exchange
"Protecting the world from PSTs and brick backups!"

<huskerbama@xxxxxxxxx> wrote in message news:1180982027.405850.80350@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
How are people implementing CCR in geographically disperse data
centers. Primary node in one data center and passive node in a
second. Then the File Share Witness in a 3rd (if possible).

As I understand it both the private and public network interfaces need
to be in the same sub-net as a limitation of Windows Clustering. But
what I can't grasp is how is this achieved? I read it can be achieved
with VLANS, but I am failing to understand how that is implemented.

I am thinking there is switchA in datacenter1 with VLAN 5 on it and
then in datacenter2 switchB with VLAN5 also, then both serverCCR1 on
switchA into VLAN5 then serverCCR2 on switchB into VLAN5 and they
think they are on the same non-routing segment? Is that possible?

That being said does the FSW also have to be in that VLAN or can it be
on a routed segment in a 3rd physical location?

Any help and additional links for reading would be appreciated.




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