Fujitsu MAH3091MC - Enterprise 9.1 GB Hard Drive, Руководство по обслуживанию

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C141-E103-01EN 1 - 2
1.1 Standard Features
(1) Compactness
Since the SCSI controller circuit is embedded in the standard 3.5 type fixed disk drive form factor,
the IDD is extremely compact. The IDD can be connected directly to the SCSI bus of the host
system.
(2) SCSI/CCS standard
The IDD provides not only SCSI basic functions but also the following features:
•
Arbitration
•
Disconnection/reselection
•
Data bus parity
•
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) 8-bit SCSI/16-bit SCSI
The IDD has 16-bit data bus width (16-bit SCSI), which have the wide transfer function suitable
for SCSI-2. This is also available as 8-bit data bus.
For the ultra SCSI model, number of connectable SCSI devices on the same SCSI bus is varied as
follows.
(4) High speed data transfer
•
8-bit SCSI: The data transfer rate on the SCSI bus is 40 MB/s maximum in
synchronous mode.
•
16-bit SCSI: The data transfer rate on the SCSI bus is 160 MB/s maximum in
synchronous mode.
Such a high data transfer rate on the SCSI bus can be useful with the large capacity buffer in the
IDD.