Fujitsu MHU2100AT 用户手册

6-10 C141-E202-01EN 

The following two types of technology are used for alternating processing: 

(1)  Sector slip processing 

In this method, defective sectors are not used (thereby avoiding the effects of 
defects), and each defective sector is assigned to the next contiguous sector that is 
normal.  

Depending on the format defined at shipment from the plant, this processing is 
performed for defective sectors. 

Figure 6.5 shows an example where sector (physical) 5 with cylinder 0 and head 0 
is defective. 

Sector (physical)

Cylinder 0
Head 0

Defec-
tive
sector

(Not used)

778

       

779

       

780

777

       

778

       

779

 

Note:  When an access request for sector 5 is issued, physical sector 6 must be 

accessed instead of physical sector 5. 

(2)  Track slip processing 

In this method, defective tracks not used (there by avoiding the effects of defects), 
and each defective track is assigned to the next contiguous track that is normal. 

Depending on the format defined at shipment from the plant, this processing is 
performed for defective tracks.