replication in sync with CCR   

Hi all,

With SCC, we know there is shared storage between A/P clustering nodes.  
When dealing with windows updates, we install them on the passive node first 
and then failover to it and then install them on the active node.  But, with 
CCR, how can we be sure that the passive node has identical copy of active 
node's database and will not cause any issue in case of failovering?  
(especially, CCR supports Geo clustering, right?)  In CCR, if I failover, 
will the passive node's database copy becomes the active database?  
Can anyone help me out?

date: Tue, 4 Mar 2008 13:16:02 -0800   author:   John

Re: replication in sync with CCR   

Yes, the passive copy on the passive node becomes the active copy, and the 
direction of replication reverses.

Get-StorageGroupCopyStatus "SG Name" | fl
Test-ReplicationHealth

-- 
Bharat Suneja
MVP - Exchange
www.zenprise.com
NEW blog location:
exchangepedia.com/blog
----------------------------


"John"  wrote in message 
news:08F37C2C-CA4D-4CC8-83CE-4134C0F985FA@microsoft.com...
> Hi all,
>
> With SCC, we know there is shared storage between A/P clustering nodes.
> When dealing with windows updates, we install them on the passive node 
> first
> and then failover to it and then install them on the active node.  But, 
> with
> CCR, how can we be sure that the passive node has identical copy of active
> node's database and will not cause any issue in case of failovering?
> (especially, CCR supports Geo clustering, right?)  In CCR, if I failover,
> will the passive node's database copy becomes the active database?
> Can anyone help me out?

date: Tue, 4 Mar 2008 14:01:09 -0800   author:   Bharat Suneja [MVP]

Re: replication in sync with CCR   

"John"  wrote in message 
news:08F37C2C-CA4D-4CC8-83CE-4134C0F985FA@microsoft.com...
> Hi all,
>
> With SCC, we know there is shared storage between A/P clustering nodes.
> When dealing with windows updates, we install them on the passive node 
> first
> and then failover to it and then install them on the active node.  But, 
> with
> CCR, how can we be sure that the passive node has identical copy of active
> node's database and will not cause any issue in case of failovering?
> (especially, CCR supports Geo clustering, right?)  In CCR, if I failover,
> will the passive node's database copy becomes the active database?
> Can anyone help me out?

You might want to read up some more on CCR when it comes to multi-site 
clustering. There are several things to consider in your design. Basically, 
I strongly recommend CCR in a single physical site and SCR for site 
redundancy.
http://msmvps.com/blogs/clusterhelp/archive/2008/02/19/ccr-and-multi-site-environments.aspx


-- 
Russ Kaufmann
MVP - Windows Server - Clustering
ClusterHelp.com, a Microsoft Certified Gold Partner
Web http://www.clusterhelp.com
Blog http://msmvps.com/clusterhelp

The next ClusterHelp classes are:
Mar 10- 13 in Denver
May 12-15 in New York

date: Wed, 5 Mar 2008 03:00:53 -0700   author:   Russ Kaufmann [MVP]