Can i add a new HDD to an encrypted array?

[ghostcorps]

Hi Guys,

 This seems liek a really basic question, I expect a simple 'no', but I
havn't found anything definative yet.

 I currently have a hardware RAID5 array, using the Intel Matrix RAID
capability onboard, encrypted with GELI.

I need to add 2 new discs to the array. If I add a disc to the array and
have it rebuilt with the Intel Matrix Storage Manager, prior to booting
FreeBSD will that destroy the encrypted data?

 If so, how can I decrypt the disk without copying the data to another
partition?



Please let me know if you need any other info.

Thanks




Using:
OS: FreeBSD 7.0
Mobo: Asus p5b-e
http://www.asus.com.au/products.aspx?l1=3&l2=11&l3=307&l4=0&model=1347&modelmenu=1
HDDs: Seagate 500g SATA2