Installing and Configuring
SCSI Device Installation Order
NOTE:
The boot drive must be in the bottom slot.
•
•
Add cold swap hard drives starting from the bottom drive cage in the HP ProLiant
ML150 server.
Add hot swap hard drives starting from the bottom of the drive cage in the HP ProLiant
ML150 server.
Use spare filler panels and spare carriers available in the chassis to close up the front of
the cold swap or hot swap mass storage cage. If there are gaps in the cage, the drives may
not receive the proper ventilation and could suffer thermal damage.
Boot Priority
This section details the HP server’s boot order by highest to lowest priority. The embedded
SCSI controller consists of two channels, A and B. Channel A typically is used to control the
external SCSI devices. Channel B typically is used to control the SCSI hard drives (5). On
each SCSI channel, the controller scans for a boot device starting at device ID 0 and works
through the ID numbers. The server's embedded controller is always SCSI ID 7. If an
optional SCSI backup tape drive is used it takes address ID 4.
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
For information about booting off of a hard disk connected to an accessory board, refer to
“Installing a Disk Array Controller Board” later in this chapter.
NOTE:
The boot order can be changed using the server's (BIOS) Setup Utility and the SCSISelect
Utility. Refer to “BIOS Setup Utility” later in this chapter.
HP ProLiant ML150 Server Operations and Maintenance Guide
2-7
HP CONFIDENTIAL
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