5.1.3 Maintenance Features
It is recommended that you check the real-time service status in a timely manner to discover
alarms, and periodically back up the system information to recover the system data in the event
of data loss during routine maintenance.
5.2 Product Troubleshooting
This section describes the troubleshooting principles and methods.
Basic Principles
During troubleshooting, observe the following principles:
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Analyze the external factors and then the internal factors.
When locating faults, consider the external factors first, such as the fault of optical fibers,
cables, devices, or power interruptions. Then, consider internal factors, such as the fault of
all replaceable components of the N8300.
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Analyze the alarms with a higher severity and then the alarms with a lower severity.
Analyze the alarms with a higher severity first, such as a critical alarm or major alarm.
Then, analyze the alarms with a lower severity, such as a minor alarm or prompt alarm.
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Analyze the alarms with common features and then alarms with exceptional features.
Analyze whether the problem is common or exceptional to determine the extent of the
problem. Analyze whether the problem occurs to one module or multiple modules.
Universal Methods
Alarm Analyzing Method
When the system is faulty, many alarms are generated. Through querying the alarms and
analyzing the performance data, you can basically judge the type and location of the fault. If
alarms can be collected normally, the analyzing method applies to locating any fault.
For example, during the running of the services, the service performance is degraded and the
alarm buzzer of the N8300 buzzes (the alarm buzzer is not set to be mute). To remedy this, log
into the ISM, and enter the
Alarm Management
interface. Then click alarm information and
the repair suggestion is displayed in the pane below. Remove the fault according to the repair
suggestion. After removing the fault, clear the alarm information.
Replacement Method
The replacement method is to replace the component that may work abnormally for locating and
removing the fault. The component can be an optical fiber, a cable, a controller, or an expansion
module.
The replacement method applies to troubleshooting the hardware. This method can quickly
locate faulty components and has no special requirements on maintenance personnel. The
limitation of the replacement method is that the same backup components must be prepared
beforehand; therefore, a full preparation is required.
For example, if the link indicator of the Fibre Channel (FC) service port is off, it indicates that
the FC service port link is abnormal. Reinsert the optical fiber of the FC service port and see
whether the link recovers to normal. If no, you should replace the optical fiber, small form-factor
Symantec FileStore N8300 (Software Release 5.6)
Product Description Guide
5 Routine Maintenance and Troubleshooting
Issue 01 (2011-05-05)
Symantec Corporation
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