HP Netserver E Server series - Manual (Page 43)

Chapter 5 Installing Additional Boards
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Installing a Disk Array Controller Board
Adding a disk array controller board provides additional fault tolerance to your
internal or external mass storage devices. If you plan on adding a disk array
controller board to the HP NetServer E 800, HP recommends installing the HP
NetRAID-1Si PCI board in slot 5. When installing a disk array controller board,
you may alter the NetServer’s boot order to allow the NetServer to boot off one of
the array’s drives. This boot order can be changed under the Configuration menu
of the NetServer’s (BIOS) Setup Utility or in the SCSI Configuration Utility.
Boot Priority
The NetServer’s boot priority (BIOS search order for a boot drive) should be
considered when selecting a PCI slot on the system board. This is especially
important if you are installing a board that requires an early number in the boot
order. The board’s boot priority is set by its slot location in the boot order. See
Figure 5-1.
The embedded SCSI controller consists of two channels, A and B. Channel A is
typically used to control the internal SCSI drives. Channel B is typically used to
control the external SCSI devices or used with Channel A to create disk
duplexing. On each SCSI channel, the NetServer scans for a boot device starting
at device ID 0 and works up from there.
By default the NetServer searches for boot devices in this order:
1. IDE CD-ROM drive
2. Flexible disk drive
3. SCSI A channel (typically the internal SCSI drives)
4. SCSI B channel (typically the external SCSI devices)
5. PCI slot P1
6. PCI slot P2
7. PCI slot P3
8. PCI slot P4
9. PCI slot P5 (64-bit slot)
10. PCI slot P6 (64-bit slot)
11. PCI slot P7