User`s guide
Table Of Contents
- About This Guide
- Kit Contents and System Requirements
- About Your RAID Controller
- Standard RAID Controller Features
- Adding Enhanced Features
- Adding a Battery Backup Module
- Upgrading the Controller Firmware
- About the Adaptec 3085
- About the Adaptec 3405
- About the Adaptec 3805
- About the Adaptec 31205
- About the Adaptec 31605
- About the Adaptec 4000
- About the Adaptec 4800SAS
- About the Adaptec 4805SAS
- About the Adaptec 2420SA
- About the Adaptec 2820SA
- About the Adaptec 2130SLP
- About the Adaptec 2230SLP
- Getting Started
- Installing the Controller and Disk Drives
- Creating a Bootable Array
- Installing the Driver and an Operating System
- Installing the Driver on an Existing Operating System
- Managing Your Storage Space
- Solving Problems
- Introduction to Serial Attached SCSI
- Understanding RAID
- Using the Adaptec RAID Configuration Utility
- Using the Array Configuration Utility for DOS
- Using the Adaptec Flash Utility
- Adaptec Serial Controller LED and I2C Connector Reference
- Adaptec 2420SA Activity LED and I2C Connector Specification
- Adaptec 2820SA Activity LED and I2C Connector Specification
- Adaptec 3085 LED and I2C Connector Specification
- Adaptec 3405 LED and I2C Connector Specification
- Adaptec 3805 LED and I2C Connector Specification
- Adaptec 31205 LED and I2C Connector Specification
- Adaptec 31605 LED and I2C Connector Specification
- Adaptec 4800SAS LED and I2C Connector Specification
- Adaptec 4805SAS LED and I2C Connector Specification
- Safety Information
- Technical Specifications
- Index
Appendix C: Using the Adaptec RAID Configuration Utility ● 90
SCSI-specific Controller Settings
In addition to the general settings listed on page 88, your Adaptec 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 91.)
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
Tran s fer R a te
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—Adaptec 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. Adaptec 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. Adaptec recommends that you retain the
default setting (auto mode).