important RAID 1 question swapping one HDD

[xxtraloud]

i have a dual bay external enclosure with two WD 750GB in RAID 1 mode.
I am going to move to a 2.5" dual bay because the enclosure i have is too big to carry around.

anyways, I am going to sell one of the two WD and then buying a 2.5". how do I make sure that when I plug in the new hard drive the RAID 1 does not copy the empty one into the full one but viceversa. I know the raid will rebuild the other drive right away. No software management came with the enclosure.
I do not want to lose all my data obviously.

plz help.

 

[MrGuvernment]

you need to delete the raid array, which should keep your data in tack.

there must be a way to manage the external drive, likely through an http:// address, read the manual.

 

[xxtraloud]

you need to delete the raid array, which should keep your data in tack.

there must be a way to manage the external drive, likely through an http:// address, read the manual.

unfortunately the manual stinks. is there a software i could use? i have a dell latitude e4300 i think it uses intel matrix storage.