Program to mirror data to external drives periodically

[Kettchxxii]

Anyone know of a simple trick to make sure data is mirrored to a set of external drives? I have three externals that I want to periodically make sure that they are mirrored to some specific folders on a micro server. OS is WHS 2011. Connection is usb2 In a perfect world I would unplug the externals and only plug them in to sync every now and again... simple script or program I should look at?

 

[memphis_1220]

If you only want to do a one way mirror you could use robocopy.

robocopy "SOURCE" "DEST" /MIR

See robocopy /? for more options.