Installing and Configuring
Guidelines
The following sections provide guidelines for installing PCI accessory boards into the HP
ProLiant ML150 server.
Boot Priority
The server’s boot order should be considered when selecting a boot device. This is especially
important if you are installing a board that requires a higher priority in the boot order. The
board's boot priority is set by its slot location in the boot order.
By default the server searches for boot devices in this order:
1. Flexible
disk
drive
2. IDE CD-ROM drive
3. Embedded SCSI B channel (SCSI drives)
4. Embedded
LAN
Using the PCI Bus
The HP ProLiant ML150 server has four 64-bit PCI-X buses, dispatched on a primary and a
secondary channel. The four 64 bit PCI-X busses are peer-to-peer, which provides
approximately equal performance. The fifth PCI slot is a 32-bit PCI bus, which is compliant
with standard PCI 2.2. Refer to Table 2-2.
Table 2-2: PCI Bus Selection.
PCI Slots
PCI Bus
Slots 1 and 2*
Secondary PCI Bus (66 MHz PCI-X)
Slots 3 and 4
Primary PCI Bus (66/100/133 MHz
PCI-X)
Slots 5
32-bit PCI
*ZCR (Zero Channel RAID) cards must be inserted in the PCI slot 2
(green color).
.
HP ProLiant ML150 Server Operations and Maintenance Guide
2-27
HP CONFIDENTIAL
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