These drives DO NOT work in a Drobo. We just ran some tests and they run slower and will cause problems down the road. We are working on a fix and there will be a KB coming out soon.
Western Digital brings Advanced Format to Caviar Green
The label on the silver anti-static bag has the following info on it:
Advanced Format Drive. To achieve full performance
• Windows® XP, multi partition and cloning software users – use WD Align software available on www.wdc.com/advformat
• Windows® XP, single partition – set jumpers 7-8 prior to installation or use WD Align SW
• All other OS configurations – drive is ready for use as is