Basic Principles; Common Methods; Alarm Analyzing Method - Huawei OceanStor S2600 Manual

4 Troubleshooting Principles and Methods

4.1 Basic Principles

This section describes the basic principles for locating faults.
During troubleshooting, observe the following principles:
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4.2 Common Methods

This section describes the common methods for locating faults.

4.2.1 Alarm Analyzing Method

This section describes the method of analyzing alarms.
4.2.2 Replacement Method
This section describes troubleshooting by using the replacement method.
4.2.1 Alarm Analyzing Method
This section describes the method of analyzing alarms.
Overview
When the system is faulty, a great amount of alarms are generated. Through querying the alarms
and analyzing the performance data, you can basically judge the type and location of the fault.
Application Scenario
If alarms can be normally collected, the analyzing method applies to locating any fault.
Application Instance
During the running of the video services, the service performance is suddenly degraded;
therefore, the picture is displayed off and on. When logging in to the management interface, you
can discover a critical alarm. After going to alarm management, you can discover an alarm that
the RAID group is degraded and then you can locate the faulty disk. You can remove the fault
by replacing the faulty disk with a new one.
Summery
By analyzing the alarm, you can locate the fault or determine the cause for the fault, or determine
the cause for the fault by collaborating with other methods.
4-2
Analyze the external factors and then the internal factors. In troubleshooting, consider the
external factors first, such as the fault of optical fibers or devices and power interruption.
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 and warning alarm.
Analyze the alarms with common features and then alarms with exceptional features.
Analyze whether the problem is common or exceptional to determine the effect range.
Analyze whether the problem occurs to one module or multiple modules.
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Copyright © Huawei Technologies Co., Ltd.
OceanStor S2600 Storage System
Troubleshooting
Issue 03 (2010-01-28)