NetApp DS4243 User Manual

Monitoring disk shelf components
You can monitor the health of your disk shelf by understanding the location and status conditions
of the LEDs on your disk shelf components, the H0 and H1 shelf modes, and the error messages
that can occur if there is a problem.
Monitoring the disk shelf
With Data ONTAP 8.1.1 and later 8.1.x releases, the H0 shelf mode is available on all disk shelf
models so that you can visually identify a specific disk shelf in a system.
The H0 mode is useful when you receive an error message about a shelf device that requires
attention and you need to physically locate the disk shelf in a data center with many large systems.
Note: The H1 shelf mode is available for systems with DS4486 disk shelves. It alerts you to the
status of a faulted disk carrier. More information can be found in the
What the disk carrier LEDs
and H1 shelf mode mean for DS4486 disk shelves section.
How the H0 shelf mode and LEDs work
You initiate the H0 shelf mode manually when you want to identify a specific disk shelf more
easily. Initiating the mode causes the green and amber LEDs on a specific disk shelf to blink in
unison. In addition, the shelf digital display alternates between flashing H0 and the shelf ID
number.
The following table summarizes how the H0 shelf mode and LEDs behave when you initiate and
exit the H0 shelf mode.
Note: The
Using the H0 shelf mode section describes how to initiate and exit the H0 shelf
mode.
H0 shelf mode
(on/off)
Shelf digital
display
LED color Status
indicator on
a FRU
Description Action to take
When H0 shelf
mode is on
Alternates
between H0
and the shelf
ID
Green
(activity)
Blinking All LEDs on the specified disk
shelf blink in unison.
Visually locate the
shelf.
Amber
(fault)
Blinking All LEDs on the specified disk
shelf blink in unison.
Solid There is an error with the
function of the specific FRU.
See console error
messages.
When H0 shelf
mode is off
Shelf ID Green
(activity)
Solid The specific FRU has power. None.
Blinking The specific FRU has power and
I/O is in progress.
Amber
(fault)
Solid There is an error with the
function of the specific FRU.
See console error
messages.
DS4243, DS2246, DS4486, and DS4246 Installation and Service Guide 33
Monitoring disk shelf components

NetApp DS4243 Specifications

General

Brand	NetApp
Model	DS4243
Category	Storage
Language	English