hp proliant ml150 g9 encryption

[hb11]

I have 2 HDD 1 TERA each. I created Raid1 and used encryption manager then installed win server 2012 r2. the mirror worked fine but the encryption didn't work . i move the one of the 2 HDD to another pc and i can still open the files and read the data

the encryption details:

Encryption                                            Enabled                                                 in express local encryption, you cannot make any changes to the configuration settings

key managment mode                         local key managment mode

controller locked                                   unlocked

encryption physical drive count          0

is the encryption manager should encrypt the data on the 2 HDD and what can i do to encrypt the data so that i couldn't read it if i moved the hard to another server or pc?