HP StorageWorks 500 Modular Smart Array - Manual (Page 43)

Installation and Operation
HP StorageWorks Modular Smart Array 500 System User Guide 2-15
Controller Display
Each MSA500 array controller in the MSA500 system contains an integrated LCD
display. This module displays informational and error messages, shows the current
status of the module, and provides an interface for user input. The system combines
traditional POST messages issued by PCI-based array controllers with runtime event
notification messages for this new set of controller display messages. The display
module consists of the following components:
• A two-line, 20-column display text window
• Four buttons
• Two LEDs
Types of Messages
The display module is capable of storing up to 100 messages. When the message log
is full, the system deletes the oldest message to make room for the most recent one.
The types of messages include:
• Error Messages—Error messages indicate a problem that may require user
action.
The Fault LED illuminates when you view an error message. It also illuminates
to indicate that an unviewed error message is in the queue and was followed by
other types of messages. When scrolling backwards to view all error messages,
the LED illuminates only when an error message is in the text display window.
• Informational Messages—Informational messages provide feedback on
non-critical changes.
• User Input Messages—User input messages indicate an issue that requires a
choice. The user can choose a selection before the end of a time-out period or
allow the controller to default to a standard choice. User input messages only
occur during system power up.
The Fault LED flashes when a user input message is in the text display window
and requires input. If the user does not provide input within the time-out period,
the message remains, but the LED stops flashing.