12 hours seems a bit excessive, however all of my machines have migrated over to SSD drives, so I may not be the best judge of spinning drives.
The other alternative is to enable Bitlocker Pre-Provisioning from the Windows 8.0/8.1 ADK. Basically, it will encrypt the drive but leave the protectors off, if you have ever suspended Bitlocker, its similar. The Bitlocker is just ON and there is no need to go through the lengthy encryption phase. Ive seen it work for Windows 7 SP1, and If you are using a product like MBAM, it should utilize the encrypted state of the drive and enable the protectors. From: [email protected] [mailto:[email protected]] On Behalf Of Bain.John Sent: Monday, May 25, 2015 11:46 AM To: [email protected] Subject: [MDT-OSD] Bitlocker drive encryption process overly slow ? Just curious to hear what others have seen in terms of whole drive encryption. Does 12 hours to encrypt 500 GB seem excessive ? This is to encrypt the drive post Windows 7 install. John John Bain CIC Engineering Office: JETS C657 | Tel: 613-437-6829 365 Laurier Avenue West Ottawa ON K1A 1L1 | 365, avenue Laurier Ouest Ottawa ON K1A 1L1 NHQ Solutions and Information Management | AC - Direction générale des solutions et de la gestion de linformation Citizenship and Immigration Canada | Citoyenneté et Immigration Canada Government of Canada | Gouvernement du Canada
