Fujitsu MBA3073NC Product Manual - Page 40

Track skew/head skew, Sector format,

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Head Track skew Track skew Head Head skew Figure 3.5 Track skew/head skew Leading logical sector in head p+1 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 SCT G1 PLO Sync SM1 DATA1 SM2 DATA2 BCRC ECC PAD G2 SCT Servo SCT G1 PLO Sync SM1 DATA1 SM2 DATA3 PAD G2 G1 PLO Sync SM1 DATA1 SM2 DATA4 BCRC ECC PAD G3 Figure 3.6 Sector format Each sector on the track consists of the following fields: 36 Downloaded from www.Manualslib.com manuals search engine C141-E270

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Head
Track skew
Track skew
Head skew
Leading logical
sector in head p+1
Head
Figure 3.5
Track skew/head skew
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
PAD
SM1
PLO
Sync
G1
SCT
G2
DATA1
SM2
BCRC
DATA2
ECC
SCT
PAD
SM1
PLO
Sync
G1
SCT
G3
DATA1
SM2
DATA3
PAD
G2
SM1
PLO
Sync
G1
DATA1
SM2
DATA4
Servo
BCRC
ECC
Figure 3.6
Sector format
Each sector on the track consists of the following fields:
36
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