Win AD/Exchange 2003 cluster ???

Hi Experts,

I have configured Windows 2003 Active Directory and Exchange Server 2003 in same BOX and now it’s all working fine. I have about 50 users for now and also have an expansion plan for about 100 users.

I need some kind of back up solution. Back up solution in the scenes I need some kind of solution, if this primary server goes down another synced server need to activated and do the same job. This process may be automated or I can do it manually but my only consideration is online synchronization everything between these servers. I don't like to loose any thing.

Hardware resources wise, I can get a nother server for this.

Please help me to come up with a solution.

Thanks alot !

NetMaxtorAsked:
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SembeeConnect With a Mentor Commented:
I gave you a suggestion for a mirroring application above. That is the only solution that will give you instant failover.

Otherwise you are looking at a good quality backup solution.
However as with all disaster recovery plans you need to first identify what you are planning for. Are you planning for a hardware failure, a loss of the building, something else? Once you have that clear in your head, then look at the budget requirements and what the company can tolerate. The longer the company can tolerate without email the cheaper the solution. Note that these kind of business decisions are not something that the IT people should be taking. It needs to be driven by the upper management, who know how the business operates and what it can tolerate.

For example, if you are planning for total loss of the building, then you can probably tolerate longer downtime because total loss of the building will mean that you have more important things to worry about.

If you are planning for a simple hardware failure, then having good quality backups on tape and a support contract or spare hardware available may be enough.

While servers do fail, it is not as common as people might think. If a server is built using good quality components from a tier one supplier to the recommended specification - using RAID arrays and other redundant hardware options, then most issues can be worked around with little disruption. For example, if you have all of your servers on the same brand, model and RAID controller, then in the event of a failure of a key server you could potentially shutdown something less important, swap the drives around and be back running in a few minutes.

Simon.
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SembeeCommented:
For 50 users the cost of a cluster cannot be justified. You will be look at a six figure sum, a steep learning curve etc.

Do you really need the instant failover? Many companies think they do, but in reality don't. Most companies can survive without email for three or four hours, and with hardware available I can have new email available to users in around 3 hours.

Otherwise you are looking at something like Doubletake, which is a mirroring application.
Whatever application you use, make sure that it is supported by Microsoft, otherwise any problems they will not want to know.

Simon.
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NetMaxtorAuthor Commented:
Do you really need the instant failover?  
No needed, i need some kind of backup solutino, it's may be mirroring applications..

Please advice !
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NetMaxtorAuthor Commented:
Thank you very much for the explanation ! I would like to know about applicatino mirroring .. can you please pull me some links of HOWTos and all ?
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SembeeCommented:
There are no howtos. It cannot be done natively. You have to purchase a product to do it for you.
I have now provided you with a product name TWICE. It takes 10 seconds to find them in Google. http://www.nsisoftware.com/

Simon.
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NetMaxtorAuthor Commented:
Thanks again !
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