User`s guide

Appendix C: Using the Adaptec RAID Controller Utility ● 97
SAS-specific Controller Settings
In addition to the general settings listed on page 96, your Adaptec SAS
controller has SAS-specific settings that can be modified if required.
(For more information about SAS, see page 70.)
To modify SAS-specific settings, select PHY Configuration from the
SerialSelect main menu.
Note: Default settings are shown in bold type.
SATA-specific Controller Settings
In addition to the general settings listed on page 96, your Adaptec SATA
controller has a SATA-specific setting that can be modified if required.
Option Description
PHY Rate The data transfer rate between the controller and devices.
The default setting is Auto, which allows the SAS card to
adjust the data transfer rate as required.
Note—SATA-II devices are always negotiated at 1.5 Gbps.
CRC Checking When enabled, determines whether the controller verifies
the accuracy of data transfer on the serial bus. Default
setting is Ye s (enabled). Set to No (disabled) only if the
controller is connected to a device that does not support
CRC Checking.
SAS Address In a situation where you want each phy on a controller to
be in a different SAS domain, this setting specifies a
unique world-wide name for each phy. Default is 0.
Note: This setting is for SAS address conflict resolution
only and should otherwise remain at its default value.
Option Description
Write
Cache
When enabled, the controller’s write cache is enabled. Default
is Yes (enabled).
Caution—When enabled, there is a potential for data loss or
corruption during a power failure.