FUJITSU MAG3091FC - Manual (Page 19)

C141-E078-02EN 1 - 2
1.1 Standard Features
(1) Compactness
The IDD has the FC-AL controller which supports the Arbitrated Loop (FC-AL) of the fibre
channel modes defined by the ANSI standard, embedded in the 3.5-inch fixed disk drive form
factor.
(2) FC-AL standard
The IDD provides not only FC-AL basic functions but also the following features:
•
Arbitration
•
Data frame CRC function
•
Command set which meets the logical specification of the SCSI CCS (Common Command
Set for Direct Access Device) requirements (Rev. 4.B)
The SCSI commands can manipulate data through logical block addressing regardless of the
physical characteristics of the disk drive. This allows software to accommodate future expansion
of system functions.
(3) Dual port support
In order to support dual ports, the IDD is equipped with two pairs of fibre channel
driver/receiver.
(4) High speed data transfer
The data transfer rate on the fibre channel loop is 106.25 MB/s maximum. In addition, the large
capacity data buffer of the IDD allows the user to make full use of the high speed data transfer
capability of the fibre channel loop.
(5) High speed spindle motor
The IDD increases the number of revolutions of the spindle motor from conventional 7,200 rpm
to 10,025 rpm. Increasing the number of revolutions of the spindle motor will make it possible to
improve the data transfer rate and reduce the rotation wait time.
(6) Continuous block processing
The addressing method of data blocks is logical block address. The initiator can access data by
specifying block number in a logically continuous data space without concerning the physical
structure of the track or cylinder boundaries.
The continuous processing up to [64K-1] blocks in a command can be achieved, and IDD can
perform continuous read/write operation when processing data blocks on several tracks or
cylinder.