Asus PCI-DA2100 User Manual - Page 26

3 3.5.6 Periodic Drive Check Time The "Periodic Drive Check Time" is an interval for the controller to check all of the drives that were on the SCSI bus at controller startup (a list of all the drives that were detected can be seen under "View and Edit SCSI Drives"). The default value is "Disabled". "Disabled" means that if a drive is removed from the bus, the controller will not be able to know - so long as no host accesses that drive. Changing the check time to any other value allows the controller to check - at the selected interval - all of the drives that are listed under "View and Edit SCSI Drives." If any drive is then removed, the controller will be able to know - even if no host accesses that drive. 3.5.7 SAF-TE Enclosure Monitoring What is SAF-TE? SAF-TE stands for SCSI Accessed Fault-Tolerant Enclosures. It is an enclosure management technology that uses the SCSI bus to interact with the controller. A SAF-TE-compliant enclosure monitors the fan temperature, power supply, UPS and also provides drive status LED's. How does it work? The SAF-TE device, which is often a back-plane within a drive-bay enclosure, must occupy a connector on one of the drive channels' SCSI cables. The presence of a SAF-TE device will be detected and its presence will be displayed in the BIOS configuration utility, Text RAID Manager and the GUI RAID Manager programs. The RAID controller communicates with the SAF-TE enclosure with standard SCSI commands, polling the device in order to get SAF-TE information. The default value for "Periodic SAF-TE Device Check Time" is "Disabled". If the enclosure does have a SAF-TE device and features, enable the controller to poll the device by selecting a time interval. The RAID controller will then check the SAF-TE device status at that interval. 26 ASUS PCI-DA2100/PCI-DA2200 User's Manual