Fault Categories
Faults can be divided in to storage faults and environment faults in terms of fault occurrence locations.
- Storage fault: storage system fault caused by hardware or software. The fault information can be obtained using the alarm platform of the storage system.
- Environment fault: software or hardware fault occurs when data is transferred from the host to the storage system over a network. Such faults are caused by network links. The fault information can be obtained from operating system logs, application program logs, and switch logs.
Table 2-3 describes common faults and symptoms.
Category |
Fault |
Symptom |
|---|---|---|
Storage fault |
Disk fault |
One or more disks are faulty. |
Power module fault |
A power module is faulty. |
|
BBU fault |
One or more BBUs are faulty. |
|
Controller fault |
A controller is faulty. |
|
Interface module fault |
An interface module is faulty. |
|
Fan fault |
A fan module is faulty. |
|
Environment fault |
HBA fault |
HBA hardware is faulty. |
Optical fiber fault |
An HBA link is faulty. |
|
Switch SFP fault |
A front-end link is down. |
|
Switch SFP fault |
||
Switch module fault |
The interface module of a switch is faulty. |
|
Switch fault |
A switch is broken down. |
|
Intermittent link disconnection |
An intermittent link disconnection is caused by an HBA, SFP, front-end device, or optical fiber. |
