Galaxy A16F-R2431 Installation and Hardware Reference Manual
1-10
Major Subsystem Components
2.
Some of the latest firmware updates may be incompatible with
the firmware currently running on your subsystem. These
updates may require restoring firmware defaults before
firmware upgrade can actually take place. Before using the
button, it is highly advised to practice the following:
Stop host I/Os,
Backup your data,
Make a list of host ID/LUN mapping information for
future references.
It is also recommended to keep a record of all
configuration parameters such as the performance
preferences, specific stripe sizes, etc.
3.
The no. 3 condition that requires restoring defaults is when an
administrator forgets the password configured to control the
access to a RAID subsystem. Before pushing this button, also
practice the steps listed above. You can access array
information even without a password.
How to use the button?
After the subsystem is powered down, you can use a straighten paper-clip
to press the button. Press and hold the button, power on the subsystem, and
wait for the associated LED and the subsystem Ready LED to light up. The
“Restore Def.” LED indicates successful restoration of firmware defaults.
With redundant RAID controllers, the procedure is tricky:
Step 1. Remove one controller from the subsystem, power down,
and then power on with the “Restore Def.” button depressed
to restore the firmware defaults on the remaining controller.
Step 2. Power down, install the controller previously removed, and
repeat the restoration process.
Step 3. When completed with restoring defaults on both controllers,
install both controllers and power on.
1.3.5.1 DIMM
Module
Each controller module comes with a DDR RAM DIMM module.
The 184-pin
DDR RAM DIMM socket
comes with a pre-installed 512MB
capacity or above DDR RAM DIMM and is able to support a module with
up to 2GB capacity.
