Redundant server software?

[mydssbin]

Need to do:

I want to have two server that are identical to each other, the only difference being one is server is slower then the other. If one server fails I want to automatically switch to the identical backup server.

Is there any software that someone can suggest?

Thanks

[InTheWayBoy]

Depends on what the server is doing...AD, FTP, File Server, HTTP, etc...more info I think is needed.

[jondercik]

VMWare ESX Server

[mydssbin]

I am new to this; so bare with me.

It is a windows 2003 server. I am guessing it should not matter what application the server is running. If one server dies that the other one takes over operations.

PS i will have a file and web server.

Thanks

[jondercik]

see above

[chilifrei64]

Sounds like somebody likes VMWare... Care to elaborate

I have used a produce called Doubletake.. I have it implemented at one of my clients and I have been pretty satisfied. Luckily none of my servers have gone down so that is about all I know.. But when testing.. I pulled the plug on my live server and I was down for about 5 min until the other picked up ... but when it picked up.. it ran as expected.

We replicated multiple servers to a single server running doubletake across an internet connetion about 8 miles down the road. Exchange, MSSQL and Pervasive SQL.