Adaptec AAA-130SA SERIES Installation And Hardware Manual

Contents

A-5Configuring the AAA-13xSA RAID Card with SCSISelectSCSISelect SettingsSCSI Bus Interface DefinitionsThe following settings are the SCSISelect settings most likely torequire any modification:n Array Adapter SCSI ID— This option sets the RAID card’sSCSI ID. The default setting is SCSI ID 7, which gives the cardthe highest priority on the SCSI bus. We recommend that youleave the AAA-13xSA RAID card set to SCSI ID 7.n SCSI Parity Checking—This option determines whether theAAA-13xSA RAID card verifies the accuracy of data transferon the SCSI bus. The default setting is Enabled. You should dis-able SCSI Parity Checking on the card and all SCSI devices ifany SCSI device connected to the card does not support SCSIparity; otherwise, leave it enabled. Most SCSI devices do sup-port SCSI parity. If you are not sure whether a device supportsSCSI parity, consult the documentation for the device.n Host Adapter SCSI Termination—This option sets termina-tion on the AAA-13xSA RAID card. The default setting is AutoMode. This means the card will detect whether internal orexternal SCSI devices are connected to it and whether they areWide or Narrow SCSI devices. The adapter will then adjust itstermination accordingly. Under normal operation, you shouldnever need to change this setting.n Host Adapter UltraSCSI—This option determines whether theadapter supports Ultra SCSI devices. The default setting is Dis-abled. If you have any installed Ultra SCSI devices installed,you should enable this setting. When this setting is enabled,the card negotiates for data transfer speeds of up to 20MBytes/sec. (or 40 MBytes/sec. for Wide SCSI devices).Note: If you use Ultra SCSI data transfer speeds, besure to use high-quality cables to connect the diskdrives to the adapter. The quality of the cable is muchmore critical when you use higher-speed data transfer.See Additional Hints for Connecting SCSI Peripherals onpage 2-8 for information on cabling SCSI peripherals.