1.1 Features
1.1.3 Interface
(1) Connection to interface
With the
(2) 2 MB data buffer
The disk drives (the MHN Series) use a 2 MB data buffer to transfer data between the host and the disk media.
In combination with the
(3)
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 (the MHN Series) 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 (the MHN Series) themselves attempt error recovery. The ECC has improved buffer error correction for correctable data errors.
(6)
The disk drives (the MHN Series) have a diagnostic function to check operation of the controller and disk drives. Executing the diagnostic command invokes self- diagnosis.
(7) Write cache
When the disk drives (the MHN Series) 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.
