Adaptec ICP5045BL Guía de usuario Pagina 89

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Appendix C: Using the ICP RAID Configuration Utility 89
SCSI-specific Controller Settings
In addition to the general settings listed on page 87, your ICP SCSI controller has SCSI-specific
settings that can be modified if required.
To modify SCSI-specific settings, select SCSI Configuration from the SCSISelect main menu.
SCSI Device Settings
You can use SCSISelect to modify some of the settings on the SCSI devices connected to your
SCSI controller.
To modify SCSI device settings, select SCSI Configuration from the SCSISelect main menu,
then select Additional Options. Devices are listed by SCSI ID. (To find the SCSI ID for a
specific device, see Formatting and Verifying Disk Drives on page 90.)
For the best device performance, don’t change the default settings.
Note:
Default settings are shown in bold type.
SCSI Channel Interface Settings
Note:
Default settings are shown in bold type.
Option Description
Maximum
Transfer Rate
Shows the maximum data transfer rate that the SCSI channel supports.
Enable
Disconnection
When enabled, the SCSI device can disconnect from the SCSI channel. Default is
Yes (enabled).
Initiate Wide
Negotiation
When enabled, the SCSI channel attempts 16-bit data transfer instead of 8-bit
data transfer. Default is Yes (enabled).
QAS When enabled, QAS (Quick Arbitration and Selection) is used to eliminate
overhead and speed up data transfers on the SCSI bus. Default is No (disabled).
Note—ICP recommends that you do not enable QAS if you are using an
enclosure that supports Ultra320 expanders.
Packetized When enabled, SCSI packetization (encapsulation) is used to reduce overhead
and speed data transfer. Default is Yes (enabled).
Option Description
Controller SCSI
Channel ID
Sets the controller’s SCSI ID. ICP recommends that you leave the controller set
to the default (7), which gives it the highest priority on the SCSI channel.
SCSI Parity
Checking
When enabled, the controller verifies the accuracy of data transfer on the SCSI
channel. Disable only if the controller is connected to any SCSI device that does
not support SCSI parity. Default is enabled.
Controller SCSI
Channel
Termination
Sets termination on the controller. ICP recommends that you retain the default
setting (auto mode).
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