Port Error Statistics - Fujitsu ETERNUS DX60 S3 User Manual

Chapter 3 Component Status
3.4 Drive Enclosure
3.4.2

Port Error Statistics

The total number of errors for CM expander and DE IOM ports is displayed.
An increasing number of errors in the information is used to notify early replacement for warning status
components. This can also be used as analysis information when performance is reduced.
Errors that occur in the SAS transmission line are detected in CM and recovered by retries. Note that detecting
an error is not an immediate cause of data failure.
The following items are displayed in the Main area:
• Enclosure
Enclosures (Controller Enclosure, Drive Enclosure) that have ports are displayed.
• Expander
The chip installation location that is targeted by the port error detection is displayed.
• Port No.
The port number that is targeted by the port error detection is displayed.
• Phy No.
The Phy number of the port that is targeted by the port error detection is displayed.
• Status
The Phy status is displayed.
- Link Up
- Link Down
- N/A
• Invalid Dword
The number of Invalid Dword occurrences is displayed.
"Invalid Dword" indicates an error in the SAS transmission line. The SAS interface encodes 8-bit to 10-bit to
improve the transmission error ratio. This error is detected when the SAS interface fails encoding.
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