***before even considering building a RAID array, you need to make sure your motherboard supports it.***
First How many hard drives can i add in a raid one configuration?
as many that can fit on your board.
is there a limit?
as far as i know, no.
i need to be able to just keep adding hard drives as i get more and more data.
why not purchase terabyte harddrives as i suggested in your last thread?
if i switch it from how it is now to raid 1, will i loose all my data?
upon reading my motherboard manual, it appears that you do not need to delete your data, but i believe it would be best to create the RAID array on new, empty harddrives.
Third if i do go with raid 1 when i run out of room how does it work? do i just simply go buy two more hds and plug them in and thats that?
no, you will need to add them to the RAID array.
what will the implications be on my data?
it depends on how you build your array.