1.1 Standard Features
The continuous processing up to
(7)
The data buffer is 8M bytes. Data is transferred between Fibre Channel Loop and disk media through this data buffer. This feature provides the suitable usage environment for users.
Since the initiator can control the disconnect/reconnect timing on the Fibre Channel Loop by specifying the condition of stored data to the data buffer or empty condition of the data buffer, the initiator can perform the effective input/output operations with utilizing high data transfer capability of the Fibre Channel Loop regardless of actual data transfer rate of the disk drive.
(8)Cache feature
After executing the READ command, the HDD reads automatically and stores (prefetches) the subsequent data blocks into the data buffer
The high speed sequential data access can be achieved by transferring the data from the data buffer without reaccessing the disk in case the subsequent command requests the prefetched data blocks.
The Write Cache feature is supported. When this feature is enabled, the status report is issued without waiting for completion of write processing to disk media, thereby enabling high speed write processing.
When Write Cache is enabled, you should ensure that the cached data is surely flushed to the disk media before you turn off the drive's power.
To ensure it, you should issue either the SYNCHRONIZE CACHE command or the STOP UNIT command with specifying “0” to the Immediate bit, and then confirm that the command is surely terminated with the GOOD STATUS.
(9)Command queuing feature
The HDD can queue maximum 128 commands, and optimizes the issuing order of queued commands by the reordering function. This feature realizes the high speed processing.
(10)Reserve and release functions
The HDD can be accessed exclusively in the
(11)Enclosure service function
The HDD supports the enclosure service interface (ESI), which complies with
