Fujitsu MH2060AH - 60GB UDMA/100 5400RPM 8MB 9.5mm Notebook Hard Disk Drive, Product Manual

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1.1 Features
C141-E195-02EN 1-3
1.1.3 Interface
(1) Connection to ATA interface
The disk drives have built-in controllers compatible with the ATA interface.
(2) 8 MB data buffer
The disk drives use a 8 MB data buffer to transfer data between the host and the
disk media.
In combination with the read-ahead cache system described in item (3) and the
write cache described in item (7), the buffer contributes to efficient I/O
processing.
(3) Read-ahead cache system
After the execution of a disk read command, the disk drive automatically reads the
subsequent data block and writes it to the data buffer (read ahead operation). This
cache system enables fast data access. The next disk read command would
normally cause another disk access. But, if the read ahead data corresponds to the
data requested by the next read command, the data in the buffer can be transferred
instead.
(4) Master/slave
The disk drives can be connected to ATA interface as daisy chain configuration.
Drive 0 is a master device, drive 1 is a slave device.
(5) Error correction and retry by ECC
If a recoverable error occurs, the disk drives themselves attempt error recovery.
The ECC has improved buffer error correction for correctable data errors.
(6) Self-diagnosis
The disk drives have a diagnostic function to check operation of the controller and
disk drives. Executing a diagnostic function of the smart command invokes self-
diagnosis.
(7) Write cache
When the disk drives receive a write command, the disk drives post the command
completion at completion of transferring data to the data buffer completion of
writing to the disk media. This feature reduces the access time at writing.