Can I run Exchange 2010 and and Exchange 2007 in the same environment? Exchange 2010 would be the new standby HA server I am about to implement.

Not sure what you are asking. Can you clarify?

Well, I need to implement a second Exchange server as a standy-by for high-availability just in case anything happens (again) to the Exchange we are currently using. Will it matter if I am running Exchange 2010 on the stand-by and Exchange 2007 on the current production server? I wouldn't think so, but thought I'd ask.

For HA in 2007, you need to use CCR/SCR/LCR. In 2010, you would use a DAG. You can't mix versions in that manner. If you want a 2nd server, it should match the version of the production server, though what you are considering is not high-availibility unless you implement the Exchange replication technology.

OK. I'll probably stick with Exchange 2007 since I am just now familiarizing my self with it anyway. High availability is actually not necessarily what I am trying to achieve. I just need a stand by just in case my production server crashes. Not necessarily for both to be in production at the same time replicating data from one to the other.

On Thu, 7 Oct 2010 18:16:04 +0000, exchngadmin wrote: >Can I run Exchange 2010 and and Exchange 2007 in the same environment? In the same Exchange organization? Yes. >Exchange 2010 would be the new standby HA server I am about to implement. Just one server? How would that be HA? There's no "standby" with what you're proposing. You can't switch between the two servers as if it's a CCR cluster. --- Rich Matheisen MCSE+I, Exchange MVP --- Rich Matheisen MCSE+I, Exchange MVP

I have 1 exchange server. I want to implement another to keep offline and out of production. Really all I am looking to do is hook the spare one up in case of failure to my production Exchange.

On Thu, 7 Oct 2010 22:10:37 +0000, exchngadmin wrote: >I have 1 exchange server. I want to implement another to keep offline and out of production. So "cold standby" rather than "High Availability". Big difference! :-) >Really all I am looking to do is hook the spare one up in case of failure to my production Exchange. Is the data storeage external to the machines? IOW, if A dies, how do you plan to get the data from A to B? Backup and restore? You'll lose data since you won't have the latest log files. You can use Exchange 2007. The machines can be named differently and you can use "database porability" to move the users from one machine to another once you have the databases moved and mounted. --- Rich Matheisen MCSE+I, Exchange MVP --- Rich Matheisen MCSE+I, Exchange MVP

Summarizing .. Exchange 2007 HA is diiferent from Exchange 2010 Exchange 2007 - LCR,CCR and SCR. Exchange 2010 - DAG . There is noway either 4 of the HA be mixed or interchanged. For Exchange 2007 Mailbox HA ..SCR is best option, followed by CCR. For Exchange 2010 - best is DAG. http://technet.microsoft.com/en-us/library/dd979799.aspx

And if you are planning to install Exchange 2010, do yourself the favor and implement a DAG so you can really have HA.

No need to keep it offline. You could install 2007 on it now and have it sitting there and in case something happens, use database portability as Rich mentioned. http://technet.microsoft.com/en-us/library/aa998340(EXCHG.80).aspx How to Restore a Mailbox Database to a New Server with Database Portability Note that Database portability does not work with public folders.

Yea, that's what I was really looking to do I guess. Not necessarily keep it offline, but to keep it from having in sort of interactive with receiving and distributing mail until I needed it. But I did want to replicate data in real-time to keep it up to date with the latest log files and databases so I could just plug and go when needed.

Yea, that's what I was really looking to do I guess. Not necessarily keep it offline, but to keep it from having in sort of interactive with receiving and distributing mail until I needed it. But I did want to replicate data in real-time to keep it up to date with the latest log files and databases so I could just plug and go when needed. Ok, in that case you'll have to implement replication technology ( CCR or DAG in 2010)

Ok. Since I'll probably stick with 2007, I will have to go with CCR. Will running Server 2008 on one Exchange and Server 2003 on the primary Exchange cause any issues?

Ok. Since I'll probably stick with 2007, I will have to go with CCR. Will running Server 2008 on one Exchange and Server 2003 on the primary Exchange cause any issues? No, you cant do that. And you have to build the CCR cluster first before moving any mailboxes to it. in CCR, both nodes are peers. Once is active, one is passive. You also need a File Share Witness / File Share Majority. Its pretty involved. More info: http://technet.microsoft.com/en-us/library/bb124521(EXCHG.80).aspx