I need to replace a failing hard drive in a PC that is set up with LUKS full-disk encryption and Linux software RAID1 mirroring. Am I correct that the mirroring takes place at a level below that of LUKS encryption, and nothing special needs to be done beyond following the standard mdadm instructions for drive replacement? (OS version is Xubuntu 14.04 64-bit.) If the encryption requires additional steps to be taken, any details would be greatly appreciated!