DR options for the server with wondows 2003 and exchange 2003

Hi Experts,

I have started looking after a small network of about 50 users, which has a server with windows 2003 standard and exchange 2003 standard edition. This server has all the roles i.e, file & print, DHCP, DNS, Email server, all roles of active directory etc.
We have another server as domain controller and we are using a software to replicate the data from  main server to second server, however these are  just plain file and folders . There is no exchange high availablity scenario etc.
The main server is an old HP machine and is out of warranty, however,  second server is relatively newer than the main server. We plan to upgrade this but this will take time to research, get upgrade costs approved and rollout the upgrade.
In the mean while, i want to make sure i have some sort of backup plan if the server crashes.

I am planinng to install and share the printers on the second server.

Share the replicated folders on the second server. The batch file in Netlogon folder can be changed to point to this machine if needed when DR is invoked.

Can use ndtsUtil to grab all FSMO roles  needed when DR is invoked.

We have many DHCP reservations on the main server. can these be backed up and restore to second server in DR scenario?

My biggest worry is exchange server, i have no idea how can i handle this. My initial thoughts are that i should install another server in the domain (domain controller/member) in such a way that i can install the exchange server immediately on that if needed and restore exchange on that. can anyone help me with this please. Please bear in mind that this will be done in case if main server completely dies so this new exchange sever will be become production server.

I will appreciate if you can guide me thorugh this and point out any other points that must be taken into account.
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AmitIT ArchitectCommented:
For Exchange 2003, take full backup everyday. In case of server crash, you need to reinstall OS and Exchange again and then restore the data from the backup steps are given here

if you are new to Exchange, then it is not that easy. So read more and if you have option to install new Exchange server, install it and move the mailboxes to new server.  Look Exchange 2010 or hosted services. For 50 users, you can host them to cloud. Office 365 is the latest addition from Microsoft.

You may want to consider using an Imaging software such as Acronis.
If you get the server version along with the bare metal restore option, you can install and take complete snapshots of your server and if it dies it can be restored to any other machine and be back in operation quickly.
I have actually used this method to back up and restore complete servers onto newer hardware when upgrading the hardware didn't make sense.

THe software will backup Exchange and SQL databases and can have scripts to stop services during backup, etc. if so desired.

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