Fujitsu MBA3073NC Product Manual page 32

Note:
The "average DE surface temperature" means the average temperature at the DE surface
throughout the year when the HDD is operating.
(4) Data security at power failure
Integrity of the data on the disk is guaranteed against all forms of DC power failure except on
blocks where a write operation is being performed. The above does not applied to formatting
disks or assigning alternate blocks.
28 C141-E270