HP AA988A HP StorageWorks 2012sa Modular Smart Array user guide (488320-002, J - Page 53

Troubleshooting, Fault Isolation Methodology, Gather Fault Information

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CHAPTER 5 Troubleshooting Fault Isolation Methodology The MSA2000 Family storage system provides many ways to isolate faults within the system. This section presents the basic methodology used to locate faults and the associated FRUs. The basic fault isolation steps are: ■ Gather fault information, including by using system LEDs ■ Determine where in the system the fault is occurring ■ Review event logs ■ If required, isolate the fault to a data path component Gather Fault Information When a fault occurs, it is important to gather as much information as possible. Doing so will help you determine the correct action needed to remedy the fault. Begin by reviewing the reported fault. Is the fault related to an internal data path or an external data path? Is the fault related to a hardware component such as a drive module, controller module, or power-and-cooling module? By isolating the fault to one of the components within the storage system, you will be able to determine the necessary action more rapidly. Determine Where the Fault Is Occurring Once you have an understanding of the reported fault, review the enclosure LEDs. The enclosure LEDs are designed to alert users of any system faults and might be what alerted the user to a fault in the first place. 53

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53
CHAPTER
5
Troubleshooting
Fault Isolation Methodology
The MSA2000 Family storage system provides many ways to isolate faults within
the system. This section presents the basic methodology used to locate faults and the
associated FRUs.
The basic fault isolation steps are:
■
Gather fault information, including by using system LEDs
■
Determine where in the system the fault is occurring
■
Review event logs
■
If required, isolate the fault to a data path component
Gather Fault Information
When a fault occurs, it is important to gather as much information as possible.
Doing so will help you determine the correct action needed to remedy the fault.
Begin by reviewing the reported fault. Is the fault related to an internal data path or
an external data path? Is the fault related to a hardware component such as a drive
module, controller module, or power-and-cooling module? By isolating the fault to
one of the components within the storage system, you will be able to determine the
necessary action more rapidly.
Determine Where the Fault Is Occurring
Once you have an understanding of the reported fault, review the enclosure LEDs.
The enclosure LEDs are designed to alert users of any system faults and might be
what alerted the user to a fault in the first place.