Hello,
 
a customer is running a Exchange 2003 Cluster and a seperate Frontend Server.
He wants to migrate to a 2007 cluster. I expect the new Cluster to run on 
Server 2008.
They want to implement a second Datacenter in another building on the same 
campus but they will have a SAN only in the first one.
So right now i plan implementing a CCR cluster with one node and one HUB+CAS 
Server in each Datacenter.
I expect the whole campus to be one AD Site but the Datacenters to have 
seperate IP Subnets.
 
I'm not sure about Witness placement and Public Folders.
I will place the Witness in another Building on the campus if possible. If 
Not I think I rather put it in the Datacenter with the preferred active node 
rather than another Site.
 
Public Folders can only be on a CCR Node if there is no PF-Replication. But 
that would eliminate the possibility of daytime patching that node as PFs 
would be down.
So i only see placing the PFs on the Hub/CAS/(+MBX) Servers and replicate 
between them or is there another way?
Or can CCR replication replicate the PF-Database to the passive node? Thats 
no where really mentioned, only "if CMS is the only Mailbox Server hosting 
PFs" but that my or may not contain the Passive Node as a backup for the PFs.

PFs are 4GB and Mailboxes 500GB.
 
Is that overall a plan valid?
 
Thanks
  Thorsten

- When FSW is placed in a third location (other than the one where the 
active or the passive node resides), you need to carefully consider the 
redundancy of networks links.
- If placed in the primary datacenter where the active node resides, in case 
of datacenter/site failure, the passive node will not have access to the 
FSW. However, if you use a CNAME record when creating the FSW, you can 
quickly point the CNAME to a server in the backup site. (Make sure the 
shared folder is created in advance... ). Failover will be manual (desirable 
in most cases when it comes to switching to a DR site).
- Public Folders: You can locate PFs on the CMS that uses CCR, as long as it 
doesn't use Public Folder replication (except during transition/migration 
phase). Public Folders have their built-in replication mechanism. If more 
than one server hosts PFs, these should not be placed on a CCR cluster and 
PF replication should be used instead (on standalone Exchange servers or SCC 
clusters).
-- 
Bharat Suneja
MVP - Exchange
www.zenprise.com
NEW blog location:
exchangepedia.com/blog
----------------------------



"ThorstenK"  wrote in message 
news:30571EA4-4C7E-4766-B6B7-D4A556BF7D7B@microsoft.com...
> Hello,
>
> a customer is running a Exchange 2003 Cluster and a seperate Frontend 
> Server.
> He wants to migrate to a 2007 cluster. I expect the new Cluster to run on
> Server 2008.
> They want to implement a second Datacenter in another building on the same
> campus but they will have a SAN only in the first one.
> So right now i plan implementing a CCR cluster with one node and one 
> HUB+CAS
> Server in each Datacenter.
> I expect the whole campus to be one AD Site but the Datacenters to have
> seperate IP Subnets.
>
> I'm not sure about Witness placement and Public Folders.
> I will place the Witness in another Building on the campus if possible. If
> Not I think I rather put it in the Datacenter with the preferred active 
> node
> rather than another Site.
>
> Public Folders can only be on a CCR Node if there is no PF-Replication. 
> But
> that would eliminate the possibility of daytime patching that node as PFs
> would be down.
> So i only see placing the PFs on the Hub/CAS/(+MBX) Servers and replicate
> between them or is there another way?
> Or can CCR replication replicate the PF-Database to the passive node? 
> Thats
> no where really mentioned, only "if CMS is the only Mailbox Server hosting
> PFs" but that my or may not contain the Passive Node as a backup for the 
> PFs.
>
> PFs are 4GB and Mailboxes 500GB.
>
> Is that overall a plan valid?
>
> Thanks
>  Thorsten

Thanks for your reply.

i only have one more question for clarification.
Will CCR replicate the PF-DB to the passive node? And thus in case of a 
failover will bring all my Mailbox DBs and the PF DB online on the passive 
node?

Thanks

On Thu, 13 Mar 2008 01:42:02 -0700, ThorstenK
 wrote:

>Thanks for your reply.
>
>i only have one more question for clarification.
>Will CCR replicate the PF-DB to the passive node? And thus in case of a 
>failover will bring all my Mailbox DBs and the PF DB online on the passive 
>node?
>
>Thanks


CCR does not replicate public folders.

Thanks,
so I'll stick to my plan and have each Datacenters HUB/CAS Servers also host 
the public folders and replicate them with each other.

> "Andy David  {MVP}" wrote:
> CCR does not replicate public folders.

Sorry to bounce in on this but:

Does this mean that you can't setup a CCR cluster if you have public folders 
?.

Thanks,
Strunk

"Andy David {MVP}"  wrote in message 
news:0i2it355jop4fltmr49vegpb3v07csn4i1@4ax.com...
> On Thu, 13 Mar 2008 01:42:02 -0700, ThorstenK
>  wrote:
>
>>Thanks for your reply.
>>
>>i only have one more question for clarification.
>>Will CCR replicate the PF-DB to the passive node? And thus in case of a
>>failover will bring all my Mailbox DBs and the PF DB online on the passive
>>node?
>>
>>Thanks
>
>
> CCR does not replicate public folders.

You can have all the public folders you want, just don't put them on a
CCR box; use a different server and have PF replicas in the same old
way.

Thank you.

Just to be sure. If i wan't to use CCR and also need to have public folders 
due to support of Outllok 2003
i will need an extra standalone Mailbox server to host the Public folders ?.

/Strunk




"Mark Arnold [MVP]"  wrote in message 
news:k69it310d81bp4qe99934his9uoed8ih64@4ax.com...
> You can have all the public folders you want, just don't put them on a
> CCR box; use a different server and have PF replicas in the same old
> way.

On Thu, 13 Mar 2008 14:16:27 +0100, Strunk wrote:

> Thank you.
> 
> Just to be sure. If i wan't to use CCR and also need to have public folders 
> due to support of Outllok 2003
> i will need an extra standalone Mailbox server to host the Public folders ?.
> 
> /Strunk
> 
> 
> 
> 
> "Mark Arnold [MVP]"  wrote in message 
> news:k69it310d81bp4qe99934his9uoed8ih64@4ax.com...
>> You can have all the public folders you want, just don't put them on a
>> CCR box; use a different server and have PF replicas in the same old
>> way.

Basically - you "can" host a PF within a CCR environment as described in: 

http://technet.microsoft.com/en-us/library/bb123996.aspx

it's just not a recommended scenario as you can not use CCR replication and
PF replication together, just one at a time. Means - you replicate all PFs
to the CCR cluster. Switch of all PF replication and switch on CCR
seeding/replication.
Consider especially the limitations about unplanned outages when holding PF
within CCR.

BG Christoph

-- 
If you dont want the milk to get sour...keep it in the cow

In other words if i only have one CCR cluster and no other servers with the 
mailbox role
i should be OK by using PF within a CCR cluster.

Thanks for Your help on this,
Strunk


"Christoph Wilfing"  wrote in message 
news:dz2aqacdqhi$.1sj0vbmyi148m$.dlg@40tude.net...
> On Thu, 13 Mar 2008 14:16:27 +0100, Strunk wrote:
>
>> Thank you.
>>
>> Just to be sure. If i wan't to use CCR and also need to have public 
>> folders
>> due to support of Outllok 2003
>> i will need an extra standalone Mailbox server to host the Public folders 
>> ?.
>>
>> /Strunk
>>
>>
>>
>>
>> "Mark Arnold [MVP]"  wrote in message
>> news:k69it310d81bp4qe99934his9uoed8ih64@4ax.com...
>>> You can have all the public folders you want, just don't put them on a
>>> CCR box; use a different server and have PF replicas in the same old
>>> way.
>
> Basically - you "can" host a PF within a CCR environment as described in:
>
> http://technet.microsoft.com/en-us/library/bb123996.aspx
>
> it's just not a recommended scenario as you can not use CCR replication 
> and
> PF replication together, just one at a time. Means - you replicate all PFs
> to the CCR cluster. Switch of all PF replication and switch on CCR
> seeding/replication.
> Consider especially the limitations about unplanned outages when holding 
> PF
> within CCR.
>
> BG Christoph
>
> -- 
> If you dont want the milk to get sour...keep it in the cow

Yes, in this case you won't have any other mailbox servers hosting PFs so no 
PF replication, and you should be OK.

The only issue is when you use both replication mechanisms - the built-in PF 
replication mechanism to replicate PFs to/from other mailbox servers that 
host PFs, and CCR replication to replicate the Storage Group that has the PF 
Store.
-- 
Bharat Suneja
MVP - Exchange
www.zenprise.com
NEW blog location:
exchangepedia.com/blog
----------------------------


"Strunk"  wrote in message 
news:e9JoaoRhIHA.6136@TK2MSFTNGP03.phx.gbl...
> In other words if i only have one CCR cluster and no other servers with 
> the mailbox role
> i should be OK by using PF within a CCR cluster.
>
> Thanks for Your help on this,
> Strunk
>
>
> "Christoph Wilfing"  wrote in message 
> news:dz2aqacdqhi$.1sj0vbmyi148m$.dlg@40tude.net...
>> On Thu, 13 Mar 2008 14:16:27 +0100, Strunk wrote:
>>
>>> Thank you.
>>>
>>> Just to be sure. If i wan't to use CCR and also need to have public 
>>> folders
>>> due to support of Outllok 2003
>>> i will need an extra standalone Mailbox server to host the Public 
>>> folders ?.
>>>
>>> /Strunk
>>>
>>>
>>>
>>>
>>> "Mark Arnold [MVP]"  wrote in message
>>> news:k69it310d81bp4qe99934his9uoed8ih64@4ax.com...
>>>> You can have all the public folders you want, just don't put them on a
>>>> CCR box; use a different server and have PF replicas in the same old
>>>> way.
>>
>> Basically - you "can" host a PF within a CCR environment as described in:
>>
>> http://technet.microsoft.com/en-us/library/bb123996.aspx
>>
>> it's just not a recommended scenario as you can not use CCR replication 
>> and
>> PF replication together, just one at a time. Means - you replicate all 
>> PFs
>> to the CCR cluster. Switch of all PF replication and switch on CCR
>> seeding/replication.
>> Consider especially the limitations about unplanned outages when holding 
>> PF
>> within CCR.
>>
>> BG Christoph
>>
>> -- 
>> If you dont want the milk to get sour...keep it in the cow
>