Adaptec SCSI RAID 2100S Installation Manual

Also see for 2100S - SCSI RAID Controller: Installation guide Quick start guide Software user's guide Installation guide Installation guide

Contents

Adaptec SCSI RAID 2100S Installation Manual Manual pdf 33 page image

2-9Installing Your Controllerneed to move another controller in your system toaccommodate this requirement.4 SCSI only—Connect any external cables to the controller.Note: If you have disk drives attached to a SCSI controllerwith a Symbios chipset, use SMOR to set the BootableDevices option to Disable.Determining the Booting ControllerAdaptec RAID controllers are shipped with a controller BIOS ROMenabled for PCI assignment. This BIOS intercepts and processesInt13 BIOS calls with an embedded DOS driver.The controller BIOS ROM can be disabled or the address changedautomatically by the system’s Plug-and-Play BIOS. In systems withmultiple Adaptec controllers, the first Adaptec RAID controllerfound during boot loads its BIOS and installs all of the otherAdaptec controllers. Any additional Adaptec RAID controllers thatare found automatically detect the presence of the first controllerand disable their BIOS. The disk controller that has the lowest BIOSROM address (typically, the lowest PCI slot number) will becomethe booting controller.Ensure that the Adaptec ROM occupies the lowest address if youwant the Adaptec controller to be the booting controller in a systemwith controllers from multiple manufacturers.Some system BIOS manufacturers select the smallest add-in BIOS asthe first candidate, therefore slot selection has no effect on whichadapter BIOS loads first. In this case, you need to disable the BIOSon selected adapters to control which adapter is the boot controller.This procedure can also be helpful in situations where it isphysically difficult to manage the slot order.Controller IRQ and AddressDuring the host system boot process, the system BIOS shouldautomatically configure the controller BIOS interrupt level (IRQ)and memory location for all Adaptec PCI controllers in the system.If problems occur, refer to Appendix C for additional help.