getting 2 hd's to communicate
Is it possible to have two hd's, each with their own OS'es (both Linux), up and running at the same time, and make them communicate with each other; such as having a cron job do backups from one to the other periodically?
At this time, I have one as Primary Master (Mandrake 8.2), and the other as Primary slave (Mandrake 9).
Whichever one is set as Master is the one that boots.
I cannot have one as Primary Master and the other as Secondary Master unless one of them is scsi; mine are both ide.
They will both be set up as http servers (Apache, sendmail, MySQL, etc...), and they will both be identical.
The idea being that if one hd craps out, the other will automatically take over.
If there is a more intelligent way of doing this, I would apreciate suggestions.
I tried, but I'm stumped. I'm a lamer with hardware.