HP LH4r HP Netserver LH Pro User Guide - Page 22

always set to Off.

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Chapter 3 Configuring Mass Storage The switch setting location and functions are the same on both cages. The settings for switch 6 determines upper and lower cage functionality. Switches 1 and 2 are always set to Off. Table 3-1 lists the functional settings for each switch. Table 3-1. Switch Functions and Settings Switch 1 2 3 4 5 6 Function I2C Bus Setting I2C Bus Setting High/Low Addresses Fast-Wide (68 pin) SCSI Only Sets SCSI addresses for upper or lower eight addresses SCSI Address Zero Sets middle shelf in cage to SCSI ID 0. Remote Start Determines control of the hot swap disk module power-on sequence. Upper/Lower Cage Identifies cage location. This is important information for the SCSI addresses and for the I2C bus. Settings Always set to Off Always set to Off On Sets drives to upper eight SCSI addresses. Off Sets drives to lower eight SCSI addresses. See SCSI Address Settings table below for description of settings. On Sets middle shelf in the cage (shelf 2 or shelf 5) to SCSI ID 0. Off Sets middle shelf to normal SCSI address sequence. See Table 3-2 for a description of SCSI address settings. On Internal control: Upper cage is set to delayed start and lower cage is set to power-on at startup. Recommended setting. Off Power-on sequence is determined by the disk array controller. Not supported by HP SCSI controller boards. On Lower cage Off Upper cage See Table 3-2 for a description of SCSI address settings. 16

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Chapter 3
Configuring Mass Storage
16
The switch setting location and functions are the same on both cages.
The settings
for switch 6 determines upper and lower cage functionality.
Switches 1 and 2 are
always set to Off.
Table 3-1 lists the functional settings for each switch.
Table 3-1.
Switch Functions and Settings
Switch
Function
Settings
1
I
2
C Bus Setting
Always set to
Off
2
I
2
C Bus Setting
Always set to
Off
3
High/Low Addresses
Fast-Wide (68 pin) SCSI Only
Sets SCSI addresses for upper
or lower eight addresses
On
Sets drives to upper eight SCSI
addresses.
Off
Sets drives to lower eight
SCSI
addresses.
See SCSI Address Settings table below
for description of settings.
4
SCSI Address Zero
Sets middle shelf in cage to
SCSI ID 0.
On
Sets middle shelf in the cage
(shelf 2 or shelf 5) to SCSI ID 0.
Off
Sets middle shelf to normal SCSI
address sequence.
See Table 3-2 for a description of SCSI
address settings.
5
Remote Start
Determines control of the hot
swap disk module power-on
sequence.
On
Internal control: Upper cage is set
to delayed start and lower cage is
set to power-on at startup.
Recommended setting.
Off
Power-on sequence is determined
by the disk array controller.
Not
supported by HP SCSI controller
boards.
6
Upper/Lower Cage
Identifies cage location.
This is
important information for the
SCSI addresses and for the I
2
C
bus.
On
Lower cage
Off
Upper cage
See Table 3-2 for a description of SCSI
address settings.