Sector Format; Figure 3.5 Track Skew/Head Skew; Figure 3.6 Sector Format - Fujitsu MBA3073NC Product Manual

Track skew
Head
Head
The number of physical sectors (track skew factor and head skew factor) corresponding to the
skew time varies depending on the logical data block length because the track skew and the head
skew are managed for individual sectors. The HDD automatically determines appropriate values
for the track skew factor and the head skew factor according to the specified logical data block
length.
3.1.4

Sector format

Each sector on the track consists of an ID field, a data field, and a gap field which separates them.
Figure 3.6 gives sector format examples.
SCT
PLO
SM1 DATA1 SM2
G1 Sync
SCT
PLO
DATA1 SM2 DATA3 PAD G2
SM1
G1 Sync
Each sector on the track consists of the following fields:
36
Track skew
Figure 3.5 Track skew/head skew
DATA2 BCRC ECC
PAD
Servo
G1
Figure 3.6 Sector format
Head skew
Leading logical
sector in head p+1
SCT
G2
PLO
SM1 DATA1 SM2 DATA4
Sync
SCT
BCRC ECC
PAD
G3
C141-E270