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General Description
1-2 C141-E235
1.1 Standard Features
(1) Compactness
In a compact enclosure having the 3.5-inch HDD form factor, the HDD contains an FC-AL
controller, which supports the Arbitrated Loop technology (FC-AL), a Fibre Channel technology
defined by the related ANSI standard.
(2) Restriction of Use of Hazardous Substances
The amounts of hazardous substances in use in these HDDs have been reduced in accordance with the
Restriction of Use of Hazardous Substances (RoHS) Directive recently issued by European Union (EU).
Note:
At present, the permissible limits on the use of certain materials specified by the RoHS directive
have not been determined. In such cases, we are using the original criteria set by Fujitsu Limited
while referring to the restrictions already established by End-of-Life Vehicle (ELV) Directive or
by the national environmental laws of the EU member nations.
(3) FC-AL standard
The HDD provides not only FC-AL basic functions but also the following features:
• Arbitration
• Disconnection/Reconnection
• Data bus parity
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.
(4) Dual-port support
The HDD has two pairs of driver and receiver sets for the Fibre Channel to support dual-port
connection.
(5) High-speed data transfer
The maximum data-transfer speed on the Fibre Channel loop is 212.5 MB/s. The large-capacity data
buffer of the HDD enables the effective use of such high-speed data transfers available on the Fibre
Channel loop.
(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.