Appendix C: Using the Adaptec RAID Controller Utility ● 97SAS-specific Controller SettingsIn addition to the general settings listed on page 96, your Adaptec SAScontroller 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 theSerialSelect main menu.Note: Default settings are shown in bold type.SATA-specific Controller SettingsIn addition to the general settings listed on page 96, your Adaptec SATAcontroller has a SATA-specific setting that can be modified if required.Option DescriptionPHY Rate The data transfer rate between the controller and devices.The default setting is Auto, which allows the SAS card toadjust 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 verifiesthe accuracy of data transfer on the serial bus. Defaultsetting is Yes (enabled). Set to No (disabled) only if thecontroller is connected to a device that does not supportCRC Checking.SAS Address In a situation where you want each phy on a controller tobe in a different SAS domain, this setting specifies aunique world-wide name for each phy. Default is 0.Note: This setting is for SAS address conflict resolutiononly and should otherwise remain at its default value.Option DescriptionWriteCacheWhen enabled, the controller’s write cache is enabled. Defaultis Yes (enabled).Caution—When enabled, there is a potential for data loss orcorruption during a power failure.
