The magnetic disk backs up all files residing in the NAND, protecting the user from inevitable NAND wear and preserving it for the more hot data handling.
About 90% of workers at the 50 large and medium-size organizations that have done sensor studies with Dr. Waber's firm agree to don the badges, which are intended to be worn the entire workday. (Bathroom breaks are optional.) Those who opt out can wear a dummy badge, which appears identical but doesn't record or transmit data, he says.
The idea is to wear the bracelet and it will track your eating, sleeping and movement and send all the data to your iPhone or Android smartphone to help you lead a healthier life by becoming more aware of your personal habits.
Even though the TLC cells have an erase-write rating of only 5, 000 cycles the company says the system provides an acceptable life using wear-leveling, write reduction and overprovisioning. (although we would like to see some field data on this) and provide a total storage capacity of up to 2 TB.