Chapter 2: Installation
2-15Watch Dog Enable/Disable
JWD controls the Watch Dog f unction.
Watch Dog is a system monitor that
can reboot the system when a sof tware
application hangs. Pins 1-2 will cause
WD to reset the system if an applica-
tion has frozen. Pins 2-3 will gene rate
a non-maskable interrupt signal for the
application that is hung up. See the
table on the right for jumper settings.
Watch Dog must also be enabled in
BIOS (setting located in t he Power
Menu).
Note: When enabled, the user needs
to write their own applicati on software
in order to disable the Watch Dog tim -
er.
Watch Dog
Jumper Settings (JWD)
Jumper Setting Defi nition
Pins 1-2 Reset
Pins 2-3 NMI
PCI-X Slot Speed
Jumpers JPX1A and JPX2A can be
used to change the speed of the PCI-X
slot #1. Note that any JPX2A setting
overrides all JPX1A settings. (To use
a JPX1A setting, JPX2A should be left
"open".) See the table on the right for
jumper settings.
PCI-X Slot Speed
Jumper Settings (JPX1A/JPX2A)
JPX1A JPX2A Defi nition
Pins 1-2 Open PCI-X 100 MHz
Pins 2-3 Open PCI-X 133 MHz
N/A Pins 1-2 PCI-X 66 MHz
N/A Pins 2-3 PCI 66 MHz
Note: The default setting is PCI-X 133 MHz.
SAS RAID Select
JPS1 allows you to select between
SR RAID, which is the default and
enables SAS RAID, or IT RAID, which
treats SAS drives as non-RAID drives
and requires a fi rmware fl ash. See
the table on the right for jumper set-
tings and the following page for the IT
fi rmware fl ash procedure.
SAS RAID Select
Jumper Settings (JPS1)
Jumper Setting Defi nition
Open IT RAID
Closed SR RAID
Note: SR = Sof twa re RA ID IT = Inte grate
Targe t mod e