Fujitsu MPB3021AT Product Manual page 176

1) The disk drive sets the HAP to the address where the partially hit data is stored, and sets
the DAP to the address just after the partially hit data.
2) The disk drive starts transferring partially hit data and reads lack data from the disk media
at the same time. However, the disk drive does not perform the read-ahead operation
newly.
3) The cache data for next read command is as follows.
Start LBA
HAP
Partially hit data
Requested data to be transferred
Partially hit data
Cache data
C141-E045-02EN
Lack data
DAP
Lack data
HAP
(stopped)
DAP
(stopped)
Last LBA
6 - 21