I am not aware of a tool to do this. If you're prepared to
spend some money on another server and require high-
availability/fault-tolerance, you might look into
www.marathontechnologies.com. My research proved it less
costly than clustering.
That said, my company maintains a "spare" server, hardware
matching the production boxes, and we have a solid backup
plan. We test restores to the spare server on a regular
basis. If the primary ever failed, we would reload
Exchange on the spare server to match the primary exactly,
and then restore from tape. We believe we could accomplish
this task in under 4 hours.
>Can you set up MS Exchange Servers 5.5 Standard in a
>Master/BAckup relationship such that the Backup mirrors
>the Master servers and takes over in the event of a
>failure of the master?
>If not then how difficult is it to have the backup MS
>Exchange server in a standybye mode to be turned on in
>response to the Master failing?
>Am running NT server 4.0 SP6a.