Acer Altos RAIDWatch, Manual

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The NPC
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11.3 Redundant NPC Modules
The NPC and Primary Agent should be, as shown in Figure 11–1, installed redundantly on two
different servers in case the Primary Agent or
NPC
module should fail. If the Primary Agent or NPC
should fail, the Primary Agent and NPC installed on another server will continue event notification.
This method is applied for the consideration that fatal system failure might occur unnoticed at the
time when the only NPC or Primary Agent is unable to function.
Redundant NPC modules should not be installed without Primary Agents. Run the Altos RAIDWatch
configuration procedure and enable this function by designating another server as where the
standby modules will be installed. Primary Agent and NPC module must then be installed manually
on that particular server (either a RAID server or not). The installation utility does not automatically
add these modules to the selected server.
11.4 Severity Levels
Altos RAIDWatch classifies disk array events into three severity levels. The first level includes non-
critical information events such as initialization of the controller and initiation of the rebuilding
process. Level 2 severity includes events which require the issuance of a warning message. Level 3
severity is the most serious level, and includes events that need immediate attention. The following
sections provide example events for each level:
11.4.1 Level 1 Severity Events (examples)
• Controller Initialization Complete
• Rebuild Initiated
• Rebuild Complete
• Rebuild Failed
• Logical Drive Initialization Started
• Logical Drive Initialization Complete
• Logical Drive Initialization Failed
Figure 11–1 Redundant NPC Modules