Fujitsu MAN3367FC - Enterprise 36.7 GB Hard Drive Product/Maintenance Manual page 39

(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.
C141-E133-02EN
2.1 Hardware Specifications
2-7