Specifications

120 en | Terminal Operation SCSI to SATA RAID Subsystem | Administrator’s Manual
F.01U.027.802 | V1 | 2006.11 Bosch Security Systems
7.12.4 Data Rate (Channel Bus)
Fig. 7.57 Data Rate Screen
This option is available in the configuration menu of Fibre host channel and the drive channel
configuration menus of Fibre- or SATA-based subsystems. Default is “AUTO” and should work
fine with most disk drives. Changing this setting is not recommended unless some particular
bus signal issues occur.
Most SATA/ATA-based systems connect only one drive per SATA/ATA channel (4 for multi-lane
with SATA II) to help avoid a single drive failure from affecting other drives. The maximum
mechanical performance of today’s drives can reach around 30MBps (sustained read) which is
still far below the bandwidth of a drive channel bus. Setting the SATA bus speed to a lower
value can get around some problems, but will not become a bottleneck to system perfor-
mance.
Note that the SATA/ATA speed is the maximum transfer rate of the SATA/ATA bus in that
mode. It does not mean the drive can actually carry out that amount of sustained read/write
performance. For the performance of each drive model, please refer to the documentation
provided by drive manufacturer.
7.12.5 View Chip Information
Fig. 7.58 View Chip Information
This is a view only option showing basic information about the SCSI-320 Channel chip proces-
sor.