HP LH4r HP Netserver Service Handbook, Volume 2 - Mid - Page 141

Boot Device Priority By default, the HP NetServer searches for bootable devices in the order shown below. CD-ROM Drive Floppy Disk Drive Embedded SCSI Controller, starting with SCSI ID 0 PCI Slots in the order 3, 2, and 1 On each controller, the server scans for a boot device starting at device ID 0 and works up from there. The controller is always SCSI ID 7. NOTE This boot order can be changed using the SETUP utility (press [F2] during the boot process). Hot-Swap Drive Bay Addresses SCSI ID 1 SCSI ID 0 Accessory Boards The HP NetServer LPr includes four PCI slots; one (over the system board) is taken by the Network Interface Controller (NIC) but can be used by other small PCI boards. Interrupt Sharing In the LPr, PCI slot #3 and the embedded SCSI controller share the same interrupt line. The system is capable of avoiding internal conflicts through interrupt sharing; however, interrupt sharing results in a small performance loss as the operating system has to resolve which of the devices caused the interrupt before it responds. Therefore, if the embedded SCSI controller is enabled, use the other PCI slots before using slot #3. NOTE Adding a PCI-to-PCI bridge card to the HP NetServer may alter the server's boot order. This boot order can be changed using the SETUP utility (press [F2] during the boot process). Refer to Chapter 4, "Installing Mass Storage Devices," and see the subsection, "Boot Device Priority." 133