User`s guide

Using Storage System LEDs for Troubleshooting
007-4522-003 81
5 and 6 RAID host hub
speed select
Used only for
RAID
configurations.
Sw 5Sw 6Function
Off Off Force 1 Gb/s
On Off Force 2 Gb/s
Off On Reserved
On On Auto loop speed detect based on LRC port signals
Note: This feature is not supported
7 and 8 Drive loop speed
select
Sw 7Sw 8Function
Off Off Force 1 Gb/s
On Off Force 2 Gb/s
Off On Speed selected by EEPROM bit
On On Auto loop speed detect based on LRC port signals
Note: This feature is not supported
9 and 10 Drive addressing
mode
Sw 9 Sw 10 Function
On On Mode 0 - Single loop, base 16, offset of 4,
7 address ranges
c
Off On Mode 1 - Single loop, base 20, 6 address ranges
On
d
Off Mode 2 - JBOD, dual loop, base 8,
15 address ranges
Off Off Mode 3 (Not used)
11 (On) Soft select Selects switch values stored in
EEPROM
Selects switch values from hardware switches
Note: Soft select switch must be set to On
12 (Off) Not used Not used Not used
a. Bolded entries indicate default switch settings for a 1X16 JBOD. Set switches 1 and 10 to Off for 2X8 JBOD.
b. Switches 3, 5, and 6 are used in RAID configurations
c. Mode 0 (switches 9 and 10 set to On) is the SGI default factory setting
d. Selecting mode 2 forces 2x8 dual loop selection
Table 5-2 Ops Panel Configuration Switch Settings for JBOD (continued)
Switch
Number Function Function When Off Function When On