So, the best solution now seems to be: Server1 - CCR Cluster Node 1 Server 2 - CCR Cluster Node 2 Server 3 - NLB Hub/CAS Node 1 Server 4 - NLB Hub/CAS Node 2 Server 5 - Witness (this seems to be a single point of failure)
So, all that remains is how to secure OWA (without ISA). Right now, there is a FE server in a screened subnet. Do I need another NLB cluster in a DMZ? Arrgh. Should I just get Doubletake? Jason Tierney, MCITP Vice President, Consulting Services Corporate Network Services "Count on Us" direct: 240-425-4441 From: Peter Johnson [mailto:[EMAIL PROTECTED] Sent: Tuesday, June 17, 2008 3:20 AM To: MS-Exchange Admin Issues Subject: RE: Exchange 2007 Cluster Hi Jason You need at least one extra server as no other roles can exist on either node of an exchange CCR cluster. If you are going to go to effort and expense of clustering the mailboxes I would strongly recommend you run the Client Access Server and Hub Transport Server roles on a NLBS Cluster. What's the point of clustering the mailbox server if you have no redundancy on the Hub Transport and CAS roles? In this scenario if the Hub transport role is on a single server and the server dies no e-mail will be delivered even between mailboxes on the mailbox server since all e-mail has to be handled by the Hub Transport role. As someone has already mentioned you need a third server to host the quorum file share but this doesn't need to be a dedicated server. You will need IIRC Enterprise Edition of the OS and Enterprise Edition of Exchange for each node of the cluster. The servers that hold the CAS and HTS roles won't need to be Enterprise Edition. From: Jason Tierney [mailto:[EMAIL PROTECTED] Sent: 16 June 2008 20:32 To: MS-Exchange Admin Issues Subject: Exchange 2007 Cluster I have a customer interested in migrating their Windows 2003/Exchange 2003 FE/BE environment into a W2K8/E2K7 Cluster (for the mailboxes only). As this is not my usual area of expertise, I would appreciate any advice you have to offer. My thoughts are that we need two new servers to make up the CCR cluster and the E2K7 MBOX servers. From what I can tell, CCR is not a Windows cluster, but an Exchange thing, so I don't need to worry about quorums and the like. The existing FE would be upgraded to an E2K7 CAS. I guess my question is, what happens to the other roles? There are only 500 users or so and things run really well on two servers now. They aren't really interested in an Edge server, but obviously the Hub Transport role (and maybe an internal CAS) needs to go somewhere. They can run on the CCR, right? Thanks for your help! Jason Tierney, MCITP Vice President, Consulting Services Corporate Network Services "Count on Us" 20010 Fisher Ave, Suite E Poolesville, MD 20837 direct: 240-425-4441 | main: 301.948.8077 | fax: 301.349.2518 http://www.cornetser.com Best Place to Work, Alliance for Workplace Excellence - 2006, 2007, 2008 ...ask me how to better manage your IT costs with [cid:[email protected]] Disclaimer: The Development Bank of Southern Africa exercises no control over information contained in any e-mail message originating from within the organisation. The Bank makes no representation relating to the completeness or accuracy and accepts no responsibility for any loss, damage or liability that is incurred by reliance on the content hereof by the recipient or any other party. Each page attached hereto must also be read in conjunction with any disclaimer, which forms part of it. Confidentiality: The e-mail is privileged and confidential and for use of the addressee only. Should you have received this e-mail in error, please return it to [EMAIL PROTECTED]<mailto:[EMAIL PROTECTED]>. Dissemination, disclosure, copying or any similar actions of the content of this e-mail is strictly prohibited. ~ Ninja Email Security with Cloudmark Spam Engine Gets Image Spam ~ ~ http://www.sunbeltsoftware.com/Ninja ~
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